阅读说明：本技术 一种镍钛合金材料电化学抛光液及其制备方法 (Nickel-titanium alloy material electrochemical polishing solution and preparation method thereof ) 是由 陈庆福 张凯 于 2021-11-03 设计创作，主要内容包括：本发明公开了一种镍钛合金材料电化学抛光液及其制备方法,所述的镍钛合金材料电化学抛光液由如下重量份数的原料组成：氟钛酸钠4-7份,羟基甲烷磺酸单钠盐3-6份,硫酸镍7-10份,丙烷磺酸吡啶嗡盐4-5份,2-羟基丁二酸3-4份,顺丁烯二酸1-2份,缓蚀剂5-8份,乙二醇35-40份,无水乙醇55-60份,去离子水50-60份。本发明的镍钛合金材料电化学抛光液制造工艺简单易操作,制得的镍钛合金材料电化学抛光液法可以用来抛光医用镍钛合金,在改善原来镍钛合金的光泽度和表面粗糙程度的同时还提高了原有镍钛合金材料耐腐蚀的性能,同时配方中不含强酸强碱等有害物质,在获得新性能的同时还很好的体现环保的理念。(The invention discloses a nickel-titanium alloy material electrochemical polishing solution and a preparation method thereof, wherein the nickel-titanium alloy material electrochemical polishing solution is prepared from the following raw materials in parts by weight: 4-7 parts of sodium fluotitanate, 3-6 parts of hydroxymethane sulfonic acid monosodium salt, 7-10 parts of nickel sulfate, 4-5 parts of pyridinium propane sulfonate, 3-4 parts of 2-hydroxysuccinic acid, 1-2 parts of maleic acid, 5-8 parts of a corrosion inhibitor, 35-40 parts of ethylene glycol, 55-60 parts of absolute ethyl alcohol and 50-60 parts of deionized water. The electrochemical polishing solution for the nickel-titanium alloy material is simple in manufacturing process and easy to operate, the prepared electrochemical polishing solution method for the nickel-titanium alloy material can be used for polishing medical nickel-titanium alloy, the glossiness and the surface roughness of the original nickel-titanium alloy are improved, the corrosion resistance of the original nickel-titanium alloy material is improved, harmful substances such as strong acid, strong base and the like are not contained in the formula, and the environment-friendly concept is well embodied while new performance is obtained.)

1. An electrochemical polishing solution for nickel-titanium alloy materials is characterized in that: the electrochemical polishing solution for the nickel-titanium alloy material comprises the following raw materials in parts by weight: 4-7 parts of sodium fluotitanate, 3-6 parts of hydroxymethane sulfonic acid monosodium salt, 7-10 parts of nickel sulfate, 4-5 parts of pyridinium propane sulfonate, 3-4 parts of 2-hydroxysuccinic acid, 1-2 parts of maleic acid, 5-8 parts of a corrosion inhibitor, 35-40 parts of ethylene glycol, 55-60 parts of absolute ethyl alcohol and 50-60 parts of deionized water.

2. The electrochemical polishing solution for nickel-titanium alloy material according to claim 1, characterized in that: the corrosion inhibitor is one or more of citric acid and oxalic acid.

3. The electrochemical polishing solution for nickel-titanium alloy material according to claim 1, characterized in that: the paint comprises the following components in parts by weight: 4 parts of sodium fluotitanate, 3 parts of hydroxy methane sulfonic acid monosodium salt, 7 parts of nickel sulfate, 4 parts of pyridinium propane sulfonate, 3 parts of 2-hydroxysuccinic acid, 1 part of maleic acid, 5 parts of corrosion inhibitor, 35 parts of ethylene glycol, 55 parts of absolute ethyl alcohol and 50 parts of deionized water.

4. The electrochemical polishing solution for nickel-titanium alloy material according to claim 1, characterized in that: the paint comprises the following components in parts by weight: 5 parts of sodium fluotitanate, 4 parts of hydroxy methane sulfonic acid monosodium salt, 8 parts of nickel sulfate, 4 parts of pyridinium propane sulfonate, 3 parts of 2-hydroxysuccinic acid, 1 part of maleic acid, 6 parts of corrosion inhibitor, 36 parts of ethylene glycol, 57 parts of absolute ethyl alcohol and 53 parts of deionized water.

5. The electrochemical polishing solution for nickel-titanium alloy material according to claim 1, characterized in that: the paint comprises the following components in parts by weight: 6 parts of sodium fluotitanate, 5 parts of monosodium hydroxymethane sulfonate, 9 parts of nickel sulfate, 5 parts of pyridinium propane sulfonate, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 7 parts of a corrosion inhibitor, 38 parts of ethylene glycol, 59 parts of absolute ethyl alcohol and 57 parts of deionized water.

6. The electrochemical polishing solution for nickel-titanium alloy material according to claim 1, characterized in that: the paint comprises the following components in parts by weight: 7 parts of sodium fluotitanate, 6 parts of hydroxy methane sulfonic acid monosodium salt, 10 parts of nickel sulfate, 5 parts of pyridinium propane sulfonate, 4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 8 parts of corrosion inhibitor, 40 parts of ethylene glycol, 60 parts of absolute ethyl alcohol and 60 parts of deionized water.

7. A method for preparing electrochemical polishing solution by using the nickel-titanium alloy material of any one of the claims 1 to 6 comprises the following specific steps:

step 1, adding 4-7 parts of sodium fluotitanate, 3-6 parts of hydroxy methane sulfonic acid monosodium salt, 35-40 parts of ethylene glycol, 50-60 parts of deionized water and 500 revolutions per minute of 300 materials into a reaction kettle, stirring for 5-10 minutes, naming the prepared solution as solution 1,

step 2, adding 4-5 parts of pyridinium propanesulfonate, 5-8 parts of corrosion inhibitor, 55-60 parts of absolute ethyl alcohol, 50-60 parts of deionized water and 500 revolutions per minute of 300 materials into a reaction kettle, stirring for 5-10 minutes, and naming the prepared solution as solution 2;

step 3, adding the prepared solution 1 and solution 2 into a reaction kettle, stirring for 5-10 minutes at 300 revolutions per minute; then adding 7-10 parts of nickel sulfate, 3-4 parts of 2-hydroxysuccinic acid and 1-2 parts of maleic acid, stirring for 10-20 minutes at 500 revolutions per minute;

and step 4, discharging and plastic packaging to obtain a finished product.

Technical Field

The invention belongs to the technical field of nickel-titanium alloy surface treatment, and particularly relates to an electrochemical polishing solution for a nickel-titanium alloy material and a preparation method thereof.

Background

The nickel-titanium alloy is a shape memory alloy, has good plasticity, and has the excellent characteristics of wear resistance, corrosion resistance, high damping, superelasticity and the like besides the unique shape memory function. Its expansion rate is above 20%, fatigue life is up to 7 power of 1 x 10, and damping characteristic is 10 times higher than that of ordinary spring. The roughness of the surface of the nickel-titanium alloy material used at present is too high in some applications, while the electrochemical polishing solution is prepared by the electrochemical polishing solution for the nickel-titanium alloy material and the preparation method thereof, the roughness of the surface of the nickel-titanium alloy material treated by the electrochemical polishing solution is greatly reduced, and the wear resistance, the corrosion resistance and the toughness of the nickel-titanium alloy material are greatly improved and have the advantages of several materials. Has very important function in the fields of medical treatment, common industry, military, national defense, aerospace and submarine and ship. The electrochemical polishing solution for the nickel-titanium alloy material and the preparation method thereof provided by the invention have the advantages of difficult volatilization of the formula, stability, environmental protection, low cost and good effect, and make great contribution to the technical aspect of nickel-titanium alloy surface treatment.

Disclosure of Invention

The invention aims to provide an electrochemical polishing solution for nickel-titanium alloy materials and a preparation method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the electrochemical polishing solution for the nickel-titanium alloy material comprises the following components in parts by weight: 4-7 parts of sodium fluotitanate, 3-6 parts of hydroxymethane sulfonic acid monosodium salt, 7-10 parts of nickel sulfate, 4-5 parts of pyridinium propane sulfonate, 3-4 parts of 2-hydroxysuccinic acid, 1-2 parts of maleic acid, 5-8 parts of a corrosion inhibitor, 35-40 parts of ethylene glycol, 55-60 parts of absolute ethyl alcohol and 50-60 parts of deionized water.

Preferably, the corrosion inhibitor is one or more of citric acid and oxalic acid.

Preferably, the electrochemical polishing solution for the nickel-titanium alloy material comprises the following components in parts by weight: 4 parts of sodium fluotitanate, 3 parts of hydroxy methane sulfonic acid monosodium salt, 7 parts of nickel sulfate, 4 parts of pyridinium propane sulfonate, 3 parts of 2-hydroxysuccinic acid, 1 part of maleic acid, 5 parts of corrosion inhibitor, 35 parts of ethylene glycol, 55 parts of absolute ethyl alcohol and 50 parts of deionized water.

Preferably, the electrochemical polishing solution for the nickel-titanium alloy material comprises the following components in parts by weight: 5 parts of sodium fluotitanate, 4 parts of hydroxy methane sulfonic acid monosodium salt, 8 parts of nickel sulfate, 4 parts of pyridinium propane sulfonate, 3 parts of 2-hydroxysuccinic acid, 1 part of maleic acid, 6 parts of corrosion inhibitor, 36 parts of ethylene glycol, 57 parts of absolute ethyl alcohol and 53 parts of deionized water.

Preferably, the electrochemical polishing solution for the nickel-titanium alloy material comprises the following components in parts by weight: 6 parts of sodium fluotitanate, 5 parts of monosodium hydroxymethane sulfonate, 9 parts of nickel sulfate, 5 parts of pyridinium propane sulfonate, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 7 parts of a corrosion inhibitor, 38 parts of ethylene glycol, 59 parts of absolute ethyl alcohol and 57 parts of deionized water.

Preferably, the electrochemical polishing solution for the nickel-titanium alloy material comprises the following components in parts by weight: 7 parts of sodium fluotitanate, 6 parts of hydroxy methane sulfonic acid monosodium salt, 10 parts of nickel sulfate, 5 parts of pyridinium propane sulfonate, 4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 8 parts of corrosion inhibitor, 40 parts of ethylene glycol, 60 parts of absolute ethyl alcohol and 60 parts of deionized water.

Preferably, the preparation method of the electrochemical polishing solution for nickel-titanium alloy material comprises the following specific steps:

step 1, adding 4-7 parts of sodium fluotitanate, 3-6 parts of hydroxy methane sulfonic acid monosodium salt, 35-40 parts of ethylene glycol, 50-60 parts of deionized water and 500 revolutions per minute of 300 materials into a reaction kettle, stirring for 5-10 minutes, naming the prepared solution as solution 1,

step 2, adding 4-5 parts of pyridinium propanesulfonate, 5-8 parts of corrosion inhibitor, 55-60 parts of absolute ethyl alcohol, 50-60 parts of deionized water and 500 revolutions per minute of 300 materials into a reaction kettle, stirring for 5-10 minutes, and naming the prepared solution as solution 2;

step 3, adding the prepared solution 1 and solution 2 into a reaction kettle, stirring for 5-10 minutes at 300 revolutions per minute; then adding 7-10 parts of nickel sulfate, 3-4 parts of 2-hydroxysuccinic acid and 1-2 parts of maleic acid, stirring for 10-20 minutes at 500 revolutions per minute;

and step 4, discharging and plastic packaging to obtain a finished product.

Compared with the prior art, the invention has the beneficial effects that:

1. the raw materials adopted by the invention are all natural raw materials, do not contain strong acid and strong alkali, are non-toxic and harmless, and accord with the concept of green environmental protection.

2. The corrosion inhibitor adopted by the invention is one or more than one of citric acid and oxalic acid, and the effects of different kinds of compounding are different.

3. The corrosion inhibitor adopted by the invention can realize surface polishing and passivation at the same time in the treatment link, and can effectively improve the treatment efficiency.

4. The nickel sulfate polishing solution is different from a single polishing brightener, wherein Ni ions in the added nickel sulfate solution can be attached to the surface of a nickel-titanium alloy material to generate a coating, so that the corrosion resistance of the nickel-titanium alloy material is further improved while the surface is polished.

5. The invention adopts sodium fluotitanate and nickel sulfate to treat the surface of the nickel-titanium alloy material simultaneously to produce a composite plating layer; in addition, when the nickel sulfate, the 2-malic acid and the maleic acid are compounded for use, the nickel sulfate is different from an original nickel plating layer after the original plating layer effect is generated, and compared with a single plating layer, the nickel sulfate produces a particularly good brightening effect and simultaneously increases the corrosion resistance.

6. The nickel-titanium alloy material electrochemical polishing solution has wide application range, and the nickel-titanium alloy material electrochemical polishing solution has wide application range and good polishing performance.

7. All the raw materials are mutually matched and interacted, the effect that one is added and one is more than two is reflected, the application range can be enlarged for the technical field of nickel-titanium alloy surface treatment, and the effect of improving the performance is achieved to a certain extent.

8. The method is simple to operate, high in practicability and capable of providing good economic benefits.

Detailed description of the preferred embodiment

The invention discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 4-7 parts of sodium fluotitanate, 3-6 parts of hydroxymethane sulfonic acid monosodium salt, 7-10 parts of nickel sulfate, 4-5 parts of pyridinium propane sulfonate, 3-4 parts of 2-hydroxysuccinic acid, 1-2 parts of maleic acid, 5-8 parts of a corrosion inhibitor, 35-40 parts of ethylene glycol, 55-60 parts of absolute ethyl alcohol and 50-60 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 4-7 parts of sodium fluotitanate, 3-6 parts of hydroxy methane sulfonic acid monosodium salt, 35-40 parts of ethylene glycol, 50-60 parts of deionized water and 500 revolutions per minute of 300 materials into a reaction kettle, stirring for 5-10 minutes, naming the prepared solution as solution 1,

step 2, adding 4-5 parts of pyridinium propanesulfonate, 5-8 parts of corrosion inhibitor, 55-60 parts of absolute ethyl alcohol, 50-60 parts of deionized water and 500 revolutions per minute of 300 materials into a reaction kettle, stirring for 5-10 minutes, and naming the prepared solution as solution 2;

step 3, adding the prepared solution 1 and solution 2 into a reaction kettle, stirring for 5-10 minutes at 300 revolutions per minute; then adding 7-10 parts of nickel sulfate, 3-4 parts of 2-hydroxysuccinic acid and 1-2 parts of maleic acid, stirring for 10-20 minutes at 500 revolutions per minute;

and step 4, discharging and plastic packaging to obtain a finished product.

Example 1

The embodiment discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 4 parts of sodium fluotitanate, 3 parts of hydroxy methane sulfonic acid monosodium salt, 7 parts of nickel sulfate, 4 parts of pyridinium propane sulfonate, 3 parts of 2-hydroxysuccinic acid, 1 part of maleic acid, 5 parts of corrosion inhibitor, 35 parts of ethylene glycol, 55 parts of absolute ethyl alcohol and 50 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 4 parts of sodium fluotitanate, 3 parts of hydroxyl methane sulfonic acid monosodium salt, 35 parts of ethylene glycol and 50 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, naming the prepared solution as solution 1,

step 2, adding 4 parts of pyridinium propanesulfonate, 5 parts of corrosion inhibitor, 55 parts of absolute ethyl alcohol and 50 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, and naming the prepared solution as solution 2;

step 3, adding the prepared solution 1 and solution 2 into a reaction kettle, stirring for 5-10 minutes at 300 revolutions per minute; then adding 7 parts of nickel sulfate, 3 parts of 2-hydroxysuccinic acid and 1 part of maleic acid, stirring for 10-20 minutes at 500 revolutions per minute;

and step 4, discharging and plastic packaging to obtain a finished product.

Example 2

The embodiment discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 5 parts of sodium fluotitanate, 4 parts of hydroxy methane sulfonic acid monosodium salt, 8 parts of nickel sulfate, 4 parts of pyridinium propane sulfonate, 3 parts of 2-hydroxysuccinic acid, 1 part of maleic acid, 6 parts of corrosion inhibitor, 36 parts of ethylene glycol, 57 parts of absolute ethyl alcohol and 53 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 5 parts of sodium fluotitanate, 4 parts of hydroxy methane sulfonic acid monosodium salt, 36 parts of ethylene glycol and 53 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, naming the prepared solution as solution 1,

step 2, adding 4 parts of pyridinium propanesulfonate, 6 parts of corrosion inhibitor, 57 parts of absolute ethyl alcohol and 53 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, and naming the prepared solution as solution 2;

step 3, adding the prepared solution 1 and solution 2 into a reaction kettle, stirring for 5-10 minutes at 300 revolutions per minute; then 8 parts of nickel sulfate, 3 parts of 2-hydroxysuccinic acid and 1 part of maleic acid are added, and the mixture is stirred for 10 to 20 minutes at 500 revolutions per minute;

and step 4, discharging and plastic packaging to obtain a finished product.

Example 3

The embodiment discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 6 parts of sodium fluotitanate, 5 parts of monosodium hydroxymethane sulfonate, 9 parts of nickel sulfate, 5 parts of pyridinium propane sulfonate, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 7 parts of a corrosion inhibitor, 38 parts of ethylene glycol, 59 parts of absolute ethyl alcohol and 57 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 6 parts of sodium fluotitanate, 5 parts of hydroxy methane sulfonic acid monosodium salt, 38 parts of ethylene glycol and 57 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, naming the prepared solution as solution 1,

step 2, adding 5 parts of pyridinium propanesulfonate, 7 parts of corrosion inhibitor, 59 parts of absolute ethyl alcohol and 57 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, and naming the prepared solution as solution 2;

step 3, adding the prepared solution 1 and solution 2 into a reaction kettle, stirring for 5-10 minutes at 300 revolutions per minute; then 9 parts of nickel sulfate, 4 parts of 2-hydroxysuccinic acid and 2 parts of maleic acid are added, and the mixture is stirred for 10 to 20 minutes at 500 revolutions per minute;

and step 4, discharging and plastic packaging to obtain a finished product.

Example 4

The embodiment discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 7 parts of sodium fluotitanate, 6 parts of hydroxy methane sulfonic acid monosodium salt, 10 parts of nickel sulfate, 5 parts of pyridinium propane sulfonate, 4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 8 parts of corrosion inhibitor, 40 parts of ethylene glycol, 60 parts of absolute ethyl alcohol and 60 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 7 parts of sodium fluotitanate, 6 parts of hydroxyl methane sulfonic acid monosodium salt, 40 parts of ethylene glycol and 60 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, naming the prepared solution as solution 1,

step 2, adding 5 parts of pyridinium propanesulfonate, 8 parts of corrosion inhibitor, 60 parts of absolute ethyl alcohol and 60 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, and naming the prepared solution as solution 2;

step 3, adding the prepared solution 1 and solution 2 into a reaction kettle, stirring for 5-10 minutes at 300 revolutions per minute; then 10 parts of nickel sulfate, 4 parts of 2-hydroxysuccinic acid and 2 parts of maleic acid are added, and the mixture is stirred for 10 to 20 minutes at 500 revolutions per minute;

and step 4, discharging and plastic packaging to obtain a finished product.

Comparative example 1

The comparison example discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 6 parts of sodium fluotitanate, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 7 parts of a corrosion inhibitor, 38 parts of ethylene glycol, 59 parts of absolute ethyl alcohol and 57 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 6 parts of sodium fluotitanate, 38 parts of ethylene glycol, 57 parts of deionized water and 500 revolutions per minute of 300 materials into a reaction kettle, stirring for 5-10 minutes, naming the prepared solution as solution 1,

step 2, adding 7 parts of corrosion inhibitor, 59 parts of absolute ethyl alcohol, 57 parts of deionized water and 500 revolutions per minute of 300 ions into the reaction kettle, stirring for 5-10 minutes, and naming the prepared solution as solution 2;

step 3, adding the prepared solution 1 and solution 2 into a reaction kettle, stirring for 5-10 minutes at 300 revolutions per minute; then adding 4 parts of 2-hydroxysuccinic acid and 2 parts of maleic acid, stirring for 10-20 minutes at 300 revolutions per minute;

and step 4, discharging and plastic packaging to obtain a finished product.

Comparative example 2

The comparison example discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 6 parts of sodium fluotitanate, 5 parts of pyridinium propanesulfonate, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 38 parts of ethylene glycol, 59 parts of absolute ethyl alcohol and 57 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 6 parts of sodium fluotitanate, 38 parts of ethylene glycol, 57 parts of deionized water and 500 revolutions per minute of 300 materials into a reaction kettle, stirring for 5-10 minutes, naming the prepared solution as solution 1,

step 2, adding 5 parts of pyridinium propanesulfonate, 59 parts of absolute ethyl alcohol and 57 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, and naming the prepared solution as solution 2;

step 3, adding the prepared solution 1 and solution 2 into a reaction kettle, stirring for 5-10 minutes at 300 revolutions per minute; then adding 4 parts of 2-hydroxysuccinic acid and 2 parts of maleic acid, stirring for 10-20 minutes at 300 revolutions per minute;

and step 4, discharging and plastic packaging to obtain a finished product.

Comparative example 3

The comparison example discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 6 parts of sodium fluotitanate, 9 parts of nickel sulfate, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 38 parts of ethylene glycol and 57 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 6 parts of sodium fluotitanate, 38 parts of ethylene glycol, 57 parts of deionized water and 500 revolutions per minute of 300 materials into a reaction kettle, stirring for 5-10 minutes, naming the prepared solution as solution 1,

step 2, continuously adding 9 parts of nickel sulfate, 4 parts of 2-hydroxysuccinic acid and 2 parts of maleic acid into the reaction kettle, stirring at 500 revolutions per minute for 10-20 minutes;

and step 3, discharging and plastic packaging to obtain a finished product.

Comparative example 4

The comparison example discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 6 parts of sodium fluotitanate, 5 parts of hydroxymethane sulfonic acid monosodium salt, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 38 parts of ethylene glycol and 57 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 6 parts of sodium fluotitanate, 5 parts of hydroxy methane sulfonic acid monosodium salt, 38 parts of ethylene glycol and 57 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, naming the prepared solution as solution 1,

step 2, continuously adding 4 parts of 2-hydroxysuccinic acid and 2 parts of maleic acid into the reaction kettle, stirring for 10-20 minutes at 500 revolutions per minute;

and step 3, discharging and plastic packaging to obtain a finished product.

Comparative example 5

The comparison example discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 7 parts of a corrosion inhibitor, 59 parts of absolute ethyl alcohol and 57 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 7 parts of corrosion inhibitor, 59 parts of absolute ethyl alcohol, 57 parts of deionized water and 500 revolutions per minute of 300 sodium chloride in a reaction kettle, stirring for 5-10 minutes, and naming the prepared solution as solution 2;

step 2, continuously adding 4 parts of 2-hydroxysuccinic acid and 2 parts of maleic acid into the reaction kettle, stirring for 10-20 minutes at the speed of 300 revolutions per minute;

and step 3, discharging and plastic packaging to obtain a finished product.

Comparative example 6

The comparison example discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 5 parts of pyridinium propanesulfonate, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 59 parts of absolute ethyl alcohol and 57 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 5 parts of pyridinium propanesulfonate, 59 parts of absolute ethyl alcohol and 57 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, and naming the prepared solution as solution 2;

step 2, continuously adding 4 parts of 2-hydroxysuccinic acid and 2 parts of maleic acid into the reaction kettle, stirring for 10-20 minutes at 500 revolutions per minute;

and step 3, discharging and plastic packaging to obtain a finished product.

Comparative example 7

The comparison example discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 9 parts of nickel sulfate, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid and 57 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 9 parts of nickel sulfate, 4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid and 57 parts of deionized water into a reaction kettle, stirring for 10-20 minutes at 500 revolutions per minute;

and 2, discharging and plastic packaging to obtain a finished product.

Comparative example 8

The comparison example discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 5 parts of hydroxymethane sulfonic acid monosodium salt, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 38 parts of ethylene glycol and 57 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 5 parts of hydroxyl methane sulfonic acid monosodium salt, 38 parts of ethylene glycol, 57 parts of deionized water and 500 revolutions per minute of 300-,

step 2, continuously adding 4 parts of 2-hydroxysuccinic acid and 2 parts of maleic acid into the reaction kettle, stirring for 10-20 minutes at 500 revolutions per minute;

and step 3, discharging and plastic packaging to obtain a finished product.

Comparative example 9

The comparison example discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 6 parts of sodium fluotitanate, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 38 parts of ethylene glycol and 57 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 6 parts of sodium fluotitanate, 38 parts of ethylene glycol, 57 parts of deionized water and 500 revolutions per minute of 300 materials into a reaction kettle, stirring for 5-10 minutes, naming the prepared solution as solution 1,

step 2, continuously adding 4 parts of 2-hydroxysuccinic acid and 2 parts of maleic acid into the reaction kettle, stirring for 10-20 minutes at 500 revolutions per minute;

and step 3, discharging and plastic packaging to obtain a finished product.

Comparative example 10

The comparison example discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 6 parts of sodium fluotitanate, 5 parts of hydroxymethane sulfonic acid monosodium salt, 9 parts of nickel sulfate, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 38 parts of ethylene glycol and 57 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 6 parts of sodium fluotitanate, 5 parts of hydroxy methane sulfonic acid monosodium salt, 38 parts of ethylene glycol and 57 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, naming the prepared solution as solution 1,

step 2, continuously adding 9 parts of nickel sulfate, 4 parts of 2-hydroxysuccinic acid and 2 parts of maleic acid into the reaction kettle, stirring at 500 revolutions per minute for 10-20 minutes;

and step 3, discharging and plastic packaging to obtain a finished product.

Comparative example 11

The comparison example discloses an electrochemical polishing solution for a nickel-titanium alloy material, which comprises the following components in parts by weight: 6 parts of sodium fluotitanate, 5 parts of monosodium hydroxymethane sulfonate, 9 parts of nickel sulfate, 5 parts of pyridinium propanesulfonate, 3-4 parts of 2-hydroxysuccinic acid, 2 parts of maleic acid, 38 parts of ethylene glycol, 59 parts of absolute ethyl alcohol and 57 parts of deionized water.

The invention also provides a preparation method of the electrochemical polishing solution for the nickel-titanium alloy material, which comprises the following specific steps:

step 1, adding 6 parts of sodium fluotitanate, 5 parts of hydroxy methane sulfonic acid monosodium salt, 38 parts of ethylene glycol and 57 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, naming the prepared solution as solution 1,

step 2, adding 5 parts of pyridinium propanesulfonate, 59 parts of absolute ethyl alcohol and 57 parts of deionized water into a reaction kettle, stirring for 5-10 minutes at 500 revolutions per minute, and naming the prepared solution as solution 2;

step 3, adding the prepared solution 1 and solution 2 into a reaction kettle, stirring for 5-10 minutes at 300 revolutions per minute; then 9 parts of nickel sulfate, 4 parts of 2-hydroxysuccinic acid and 2 parts of maleic acid are added, and the mixture is stirred for 10 to 20 minutes at 500 revolutions per minute;

and step 4, discharging and plastic packaging to obtain a finished product.

And (3) testing results:

15 kinds of electrochemical polishing solutions for nickel-titanium alloy materials were prepared by the methods for preparing electrochemical polishing solutions for nickel-titanium alloy materials according to examples 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11, and 15 pieces of nickel-titanium alloy materials having completely uniform shapes and sizes were treated with the electrochemical polishing solutions for nickel-titanium alloy materials according to examples 1, 2, 3, and 4 and comparative examples 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11. The test results were as follows:

the test method comprises the following steps:

firstly, carrying out surface roughness test on 15 nickel-titanium alloy materials: the shape error of the surface to be measured is displayed by an interference fringe pattern by using a light wave interference principle (see a flat crystal and laser length measuring technology), and the microscopic part of the interference fringes is amplified by a microscope with high amplification factor (up to 500 times) and then measured to obtain the roughness of the surface to be measured.

Secondly, performing corrosion resistance test on 15 nickel-titanium alloy materials: the engineering plastic composite materials of each example and the comparative example are respectively prepared into 2 blocks, wherein the 2 blocks of the engineering plastic composite materials of each example and the comparative example are completely the same and are respectively put into a hydrochloric acid solution with the concentration of 5% and a sodium hydroxide solution with the concentration of 5% for soaking for 2 hours, and then are taken out, cleaned and dried. In comparison with the control, the smaller the proportion of the area corroded indicates the better corrosion resistance.

Serial number	Surface roughness value	Proportion of area of corrosion
			Example 1	35	3.42％
Example 2	33	2.81％
			Example 3	30	1.36％
Example 4	31	2.05％
			Comparative example 1	109	22.76％
Comparative example 2	103	21.96％
			Comparative example 3	99	19.77％
Comparative example 4	106	23.17％
			Comparative example 5	128	32.81％
Comparative example 6	120	30.08％
			Comparative example 7	115	28.75％
Comparative example 8	122	30.87％
			Comparative example 9	125	31.42％
Comparative example 10	75	15.58％
			Comparative example 11	52	8.93％
Blank sample	137	36.14％

In comparative example 1, only sodium fluorotitanate, a corrosion inhibitor, 2-hydroxysuccinic acid, maleic acid, ethylene glycol, absolute ethyl alcohol and deionized water were added, and the surface roughness value and the corrosion resistance were poor.

In comparative example 2, only sodium fluorotitanate, pyridinium propanesulfonate, 2-hydroxysuccinic acid, maleic acid, ethylene glycol, absolute ethyl alcohol and deionized water were added, and the surface roughness value and the corrosion resistance were poor.

In comparative example 3, only sodium fluorotitanate, nickel sulfate, 2-hydroxysuccinic acid, maleic acid, ethylene glycol and deionized water were added, and the surface roughness value and the corrosion resistance were poor.

In comparative example 4, only sodium fluorotitanate, monosodium hydroxymethanesulfonate, 2-hydroxysuccinic acid, maleic acid, ethylene glycol and deionized water were added, and the surface roughness value and the corrosion resistance were poor.

In comparative example 5, only the corrosion inhibitor, 2-malic acid, maleic acid, absolute ethyl alcohol and deionized water were added, and the surface roughness value and corrosion resistance were poor.

In comparative example 6, only pyridinium propanesulfonate, 2-hydroxysuccinic acid, maleic acid, absolute ethyl alcohol and deionized water were added, and the surface roughness and corrosion resistance were poor.

In comparative example 7, only nickel sulfate, 2-malic acid, maleic acid and deionized water were added, resulting in poor surface roughness and corrosion resistance.

In comparative example 8, only hydroxymethane sulfonic acid monosodium salt, 2-hydroxysuccinic acid, maleic acid, ethylene glycol and deionized water were added, and the surface roughness value and corrosion resistance were poor.

In comparative example 9, only sodium fluorotitanate, 2-hydroxysuccinic acid, maleic acid, ethylene glycol and deionized water were added, and the surface roughness value and corrosion resistance were poor.

In comparative example 10, sodium fluorotitanate, monosodium hydroxymethanesulfonate, nickel sulfate, 2-hydroxysuccinic acid, maleic acid, ethylene glycol and deionized water were added, and the surface roughness value and the corrosion resistance were general.

In comparative example 11, sodium fluorotitanate, monosodium hydroxymethanesulfonate, nickel sulfate, pyridinium propanesulfonate, 2-hydroxysuccinic acid, maleic acid, ethylene glycol, absolute ethanol and deionized water were added alone, and the surface roughness value and the corrosion resistance were good.

All the raw materials are mutually matched and interacted, the effect that one is added and one is more than two is reflected, the application range can be enlarged for the technical field of nickel-titanium alloy surface treatment, and the effect of improving the performance is achieved to a certain extent.

The various embodiments listed above can be combined with each other without contradiction, and a person skilled in the art can combine the above explanations of the embodiments as a basis for combining technical features in different embodiments.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.