阅读说明：本技术 一种添加La2O3稀土进行化学镀制备Ni-Zn-P合金镀层的方法 (La is added2O3Method for preparing Ni-Zn-P alloy coating by rare earth chemical plating ) 是由 宋振兴 苏颖 王佳辉 赵倩 张子辰 张艺琪 于 2020-07-23 设计创作，主要内容包括：本发明提供一种添加La<Sub>2</Sub>O<Sub>3</Sub>稀土进行化学镀制备Ni-Zn-P合金镀层的方法,具体步骤如下：(1)镀液制备：将含有一定La<Sub>2</Sub>O<Sub>3</Sub>浓度的镀液放入烧杯中,用氢氧化钠溶液调节pH至9.0,然后将烧杯置于恒温水浴中并控制温度达90℃后,将预处理后的钢管镀件放入镀液中施镀2h,取出冲洗风干后称重。(2)基础镀液组成及工艺过程：六水合硫酸镍27g/L,次磷酸钠16g/L,柠檬酸三钠90g/L,氯化铵46g/L,七水合硫酸锌8g/L,硫脲2g/L,氧化镧5-35mg/L,pH 9.0,温度90℃。(The invention provides a La-added alloy 2 O 3 The method for preparing the Ni-Zn-P alloy coating by carrying out chemical plating on rare earth comprises the following specific steps: (1) preparing a plating solution: will contain a certain amount of La 2 O 3 Putting the plating solution with the concentration into a beaker, adjusting the pH to 9.0 by using a sodium hydroxide solution, then putting the beaker into a constant-temperature water bath, controlling the temperature to 90 ℃, putting the pretreated steel pipe plated part into the plating solution for plating for 2 hours, taking out, washing, air-drying and weighing. (2) The basic plating solution composition and the process are as follows: 27g/L of nickel sulfate hexahydrate, 16g/L of sodium hypophosphite, 90g/L of trisodium citrate, 46g/L of ammonium chloride, 8g/L of zinc sulfate heptahydrate, 2g/L of thiourea, 5-35mg/L of lanthanum oxide, pH 9.0 and temperature 90 ℃.)

1. A method for preparing a Ni-Zn-P alloy coating by adding La2O3 rare earth for chemical plating is characterized by comprising the following steps:

(1) the basic plating solution composition and the process are as follows: 27g/L of nickel sulfate hexahydrate, 16g/L of sodium hypophosphite, 90g/L of trisodium citrate, 46g/L of ammonium chloride, 8g/L of zinc sulfate heptahydrate, 2g/L of thiourea, 5-35mg/L of lanthanum oxide, pH 9.0 and temperature 90 ℃.

(2) Preparing a plating solution: will contain a certain amount of La₂O₃Putting the plating solution with the concentration into a beaker, adjusting the pH to 9.0 by using a sodium hydroxide solution, then putting the beaker into a constant-temperature water bath, controlling the temperature to 90 ℃, putting the pretreated steel pipe plated part into the plating solution for plating for 2 hours, taking out, washing, air-drying and weighing.

2. The method for preparing the Ni-Zn-P alloy coating by adding the La2O3 rare earth for chemical plating according to claim 1, which is characterized by comprising the following steps:

(1) the basic plating solution composition and the process are as follows: 27g/L of nickel sulfate hexahydrate, 16g/L of sodium hypophosphite, 90g/L of trisodium citrate, 46g/L of ammonium chloride, 8g/L of zinc sulfate heptahydrate, 2g/L of thiourea, 5mg/L of lanthanum oxide, pH 9.0 and temperature 90 ℃. (ii) a

(2) Preparing a plating solution: will contain a certain amount of La₂O₃Putting the plating solution with the concentration into a beaker, adjusting the pH to 9.0 by using a sodium hydroxide solution, then putting the beaker into a constant-temperature water bath, controlling the temperature to 90 ℃, putting the pretreated steel pipe plated part into the plating solution for plating for 2 hours, taking out, washing, air-drying and weighing.

3. The method for preparing the Ni-Zn-P alloy coating by adding the La2O3 rare earth for chemical plating according to claim 1, which is characterized by comprising the following steps:

(1) the basic plating solution composition and the process are as follows: 27g/L of nickel sulfate hexahydrate, 16g/L of sodium hypophosphite, 90g/L of trisodium citrate, 46g/L of ammonium chloride, 8g/L of zinc sulfate heptahydrate, 2g/L of thiourea, 10mg/L of lanthanum oxide, pH 9.0 and temperature 90 ℃.

(2) Preparing a plating solution: will contain a certain amount of La₂O₃Putting the plating solution with the concentration into a beaker, adjusting the pH to 9.0 by using a sodium hydroxide solution, then putting the beaker into a constant-temperature water bath, controlling the temperature to 90 ℃, putting the pretreated steel pipe plated part into the plating solution for plating for 2 hours, taking out, washing, air-drying and weighing.

4. The method for preparing the Ni-Zn-P alloy coating by adding the La2O3 rare earth for chemical plating according to claim 1, which is characterized by comprising the following steps:

(1) the basic plating solution composition and the process are as follows: 27g/L of nickel sulfate hexahydrate, 16g/L of sodium hypophosphite, 90g/L of trisodium citrate, 46g/L of ammonium chloride, 8g/L of zinc sulfate heptahydrate, 2g/L of thiourea, 15mg/L of lanthanum oxide, pH 9.0 and temperature 90 ℃.

(2) Preparing a plating solution: will contain a certain amount of La₂O₃Putting the plating solution with the concentration into a beaker, adjusting the pH to 9.0 by using a sodium hydroxide solution, then putting the beaker into a constant-temperature water bath, controlling the temperature to 90 ℃, putting the pretreated steel pipe plated part into the plating solution for plating for 2 hours, taking out, washing, air-drying and weighing.

5. The method for preparing the Ni-Zn-P alloy coating by adding the La2O3 rare earth for chemical plating according to claim 1, which is characterized by comprising the following steps:

(1) the basic plating solution composition and the process are as follows: 27g/L of nickel sulfate hexahydrate, 16g/L of sodium hypophosphite, 90g/L of trisodium citrate, 46g/L of ammonium chloride, 8g/L of zinc sulfate heptahydrate, 2g/L of thiourea, 35mg/L of lanthanum oxide, pH 9.0 and temperature 90 ℃.

(2) Preparing a plating solution: will contain a certain amount of La₂O₃Putting the plating solution with the concentration into a beaker, adjusting the pH to 9.0 by using a sodium hydroxide solution, then putting the beaker into a constant-temperature water bath, controlling the temperature to 90 ℃, putting the pretreated steel pipe plated part into the plating solution for plating for 2 hours, taking out, washing, air-drying and weighing.

Technical Field

The invention relates to a La-added material₂O₃A method for preparing a Ni-Zn-P alloy coating by carrying out chemical plating on rare earth.

Background

The chemical plating Ni-Zn-P ternary alloy plating layer has better physical properties such as magnetism, electric conduction, wear resistance, corrosion resistance, heat resistance and the like than the chemical plating Ni-P binary alloy plating layer, thereby receiving attention of people. In recent years, many studies have been madeThe researchers have studied the process optimization, the plating layer performance, the deposition kinetics and the like of the chemical plating of Ni-Zn-P, and a plurality of documents report that the physical performance of the Ni-Zn-P alloy plating layer is improved by applying heat treatment, and the rare earth element has larger atomic radius and special electronic structure, thereby having good physical and chemical properties and extremely wide application. In chemical plating and various material preparation and processing processes, the addition of rare earth can obviously improve the product performance and improve the process conditions, and is known as a multifunctional additive. The invention adds lanthanum oxide (La) into the basic plating solution₂O₃) Rare earth is chemically plated to prepare a Ni-Zn-P alloy plating layer, and different La is added into the basic plating solution in an important research₂O₃The concentration influences the deposition rate, the surface quality, the corrosion resistance and the crystal structure of the Ni-Zn-P alloy coating.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to solve the technical problem of how to improve the characteristics of lanthanum oxide such as the deposition rate, the surface quality, the corrosion resistance, the crystal structure and the like of the Ni-Zn-P alloy coating. The invention provides a La-added alloy₂O₃The method for preparing the Ni-Zn-P alloy coating by performing chemical plating on the rare earth enhances the amorphous phase degree of the coating and is beneficial to improving the corrosion resistance of the coating.

In order to solve the technical problems, the invention adopts the technical scheme that the method for preparing the Ni-Zn-P alloy coating by adding La2O3 rare earth for chemical plating comprises the following specific steps:

(1) the basic plating solution composition and the process are as follows: 27g/L of nickel sulfate hexahydrate, 16g/L of sodium hypophosphite, 90g/L of trisodium citrate, 46g/L of ammonium chloride, 8g/L of zinc sulfate heptahydrate, 2g/L of thiourea, 5-35mg/L of lanthanum oxide, pH 9.0 and temperature 90 ℃. (ii) a

(2) Preparing a plating solution: will contain a certain amount of La₂O₃Putting the plating solution with the concentration into a beaker, adjusting the pH to 9.0 by using a sodium hydroxide solution, then putting the beaker into a constant-temperature water bath, controlling the temperature to 90 ℃, putting the pretreated steel pipe plated part into the plating solution for plating for 2 hours, taking out, washing, air-drying and weighing.

The optimized technical scheme of the invention is that the method for preparing the Ni-Zn-P alloy coating by adding La2O3 rare earth for chemical plating comprises the following specific steps:

(1) the basic plating solution composition and the process are as follows: 27g/L of nickel sulfate hexahydrate, 16g/L of sodium hypophosphite, 90g/L of trisodium citrate, 46g/L of ammonium chloride, 8g/L of zinc sulfate heptahydrate, 2g/L of thiourea, 5mg/L of lanthanum oxide, pH 9.0 and temperature 90 ℃. (ii) a

(2) Preparing a plating solution: will contain a certain amount of La₂O₃Putting the plating solution with the concentration into a beaker, adjusting the pH to 9.0 by using a sodium hydroxide solution, then putting the beaker into a constant-temperature water bath, controlling the temperature to 90 ℃, putting the pretreated steel pipe plated part into the plating solution for plating for 2 hours, taking out, washing, air-drying and weighing.

The optimized technical scheme of the invention is that the method for preparing the Ni-Zn-P alloy coating by adding La2O3 rare earth for chemical plating comprises the following specific steps:

(1) the basic plating solution composition and the process are as follows: 27g/L of nickel sulfate hexahydrate, 16g/L of sodium hypophosphite, 90g/L of trisodium citrate, 46g/L of ammonium chloride, 8g/L of zinc sulfate heptahydrate, 2g/L of thiourea, 10mg/L of lanthanum oxide, pH 9.0 and temperature 90 ℃.

(2) Preparing a plating solution: will contain a certain amount of La₂O₃Putting the plating solution with the concentration into a beaker, adjusting the pH to 9.0 by using a sodium hydroxide solution, then putting the beaker into a constant-temperature water bath, controlling the temperature to 90 ℃, putting the pretreated steel pipe plated part into the plating solution for plating for 2 hours, taking out, washing, air-drying and weighing.

The optimized technical scheme of the invention is that the method for preparing the Ni-Zn-P alloy coating by adding La2O3 rare earth for chemical plating comprises the following specific steps:

(1) the basic plating solution composition and the process are as follows: 27g/L of nickel sulfate hexahydrate, 16g/L of sodium hypophosphite, 90g/L of trisodium citrate, 46g/L of ammonium chloride, 8g/L of zinc sulfate heptahydrate, 2g/L of thiourea, 15mg/L of lanthanum oxide, pH 9.0 and temperature 90 ℃.

(2) Preparing a plating solution: will contain a certain amount of La₂O₃Putting the plating solution with the concentration into a beaker, adjusting the pH to 9.0 by using a sodium hydroxide solution, then placing the beaker into a constant-temperature water bath, controlling the temperature to 90 ℃, and plating the pretreated steel pipeAnd putting the workpiece into a plating solution for plating for 2 hours, taking out, washing, air-drying and weighing.

The optimized technical scheme of the invention is that the method for preparing the Ni-Zn-P alloy coating by adding La2O3 rare earth for chemical plating comprises the following specific steps:

(1) the basic plating solution composition and the process are as follows: 27g/L of nickel sulfate hexahydrate, 16g/L of sodium hypophosphite, 90g/L of trisodium citrate, 46g/L of ammonium chloride, 8g/L of zinc sulfate heptahydrate, 2g/L of thiourea, 35mg/L of lanthanum oxide, pH 9.0 and temperature 90 ℃. (ii) a

(2) Preparing a plating solution: will contain a certain amount of La₂O₃Putting the plating solution with the concentration into a beaker, adjusting the pH to 9.0 by using a sodium hydroxide solution, then putting the beaker into a constant-temperature water bath, controlling the temperature to 90 ℃, putting the pretreated steel pipe plated part into the plating solution for plating for 2 hours, taking out, washing, air-drying and weighing.

The invention has the beneficial effects that the La is added₂O₃The method for preparing the Ni-Zn-P alloy coating by performing chemical plating on the rare earth has the advantages of simple and convenient operation, simple required equipment, green and environment-friendly process, low energy consumption and stable coating performance.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it is to be understood that various changes or modifications may be made by those skilled in the art after reading the disclosure of the present invention, and such equivalents may fall within the scope of the invention as defined in the present application.