阅读说明：本技术 高性能新型陶瓷材料及其制备方法 (High-performance novel ceramic material and preparation method thereof ) 是由 虞振道 虞文辉 林童 于 2020-04-11 设计创作，主要内容包括：本发明公开了一种高性能新型陶瓷材料及其制备方法,所述陶瓷材料,以重量份为单位,包括以下原料：氧氯化锆32-56份、硝酸钇3-5份、镁铝尖晶石粉10-13份、氧化铜2-4份、氮化锌3-6份、玻璃纤维0.3-0.5份、膨润土1-2份、甲基氢二氯硅烷1.2-2.5份、六水氯化镁0.4-0.7份、氢氧化铝0.2-0.5份,所述陶瓷材料是经过原料粉碎、球磨、微波处理、煅烧等步骤制成的。用本发明陶瓷材料制成的陶瓷件耐磨性高,磨损体积≤0.79mm<Sup>3</Sup>,耐磨性能优异,有利于使用的连续性和持久性,特别适合应用于各种陶瓷阀门,并可广泛应用于其它要求耐磨性高的陶瓷设备或工具。(The invention discloses a high-performance novel ceramic material and a preparation method thereof, wherein the ceramic material comprises the following raw materials in parts by weight: 32-56 parts of zirconium oxychloride, 3-5 parts of yttrium nitrate, 10-13 parts of magnesium aluminate spinel powder, 2-4 parts of copper oxide, 3-6 parts of zinc nitride, 0.3-0.5 part of glass fiber, 1-2 parts of bentonite, 1.2-2.5 parts of methylhydrodichlorosilane, 0.4-0.7 part of magnesium chloride hexahydrate and 0.2-0.5 part of aluminum hydroxide, wherein the ceramic material is prepared by the steps of crushing raw materials, ball milling, microwave treatment, calcining and the like. The ceramic part made of the ceramic material has high wear resistance, and the wear volume is less than or equal to 0.79mm 3 The wear-resistant ceramic valve has excellent wear resistance, is beneficial to the continuity and durability of use, is particularly suitable for being applied to various ceramic valves, and can be widely applied to other ceramic equipment or tools requiring high wear resistance.)

1. A novel high-performance ceramic material is characterized by comprising the following raw materials in parts by weight: 32-56 parts of zirconium oxychloride, 3-5 parts of yttrium nitrate, 10-13 parts of magnesium aluminate spinel powder, 2-4 parts of copper oxide, 3-6 parts of zinc nitride, 0.3-0.5 part of glass fiber, 1-2 parts of bentonite, 1.2-2.5 parts of methylhydrodichlorosilane, 0.4-0.7 part of magnesium chloride hexahydrate and 0.2-0.5 part of aluminum hydroxide.

2. The high-performance novel ceramic material according to claim 1, comprising the following raw materials in parts by weight: 45 parts of zirconium oxychloride, 4 parts of yttrium nitrate, 12 parts of magnesium aluminate spinel powder, 3 parts of copper oxide, 5 parts of zinc nitride, 0.4 part of glass fiber, 1.6 parts of bentonite, 2 parts of methylhydrodichlorosilane, 0.5 part of magnesium chloride hexahydrate and 0.4 part of aluminum hydroxide.

3. The novel high-performance ceramic material as claimed in claim 1 or 2, wherein the particle size of the magnesium aluminum spinel powder is 2000-3000 mesh.

4. A method for preparing a new high-performance ceramic material according to any one of claims 1-3, characterized in that it comprises the following steps:

s1: putting zirconium oxychloride, yttrium nitrate, magnesium-aluminum spinel powder, copper oxide, zinc nitride, glass fiber, bentonite, methyl hydrogen dichlorosilane, magnesium chloride hexahydrate and aluminum hydroxide into a grinder for grinding to prepare mixed powder a;

s2: putting the mixed powder a prepared in the step S1 into a ball mill for processing, and screening to prepare mixed powder b;

s3: and (4) carrying out microwave treatment on the mixed powder b prepared in the step (S2), then calcining, and finally crushing to prepare the novel high-performance ceramic material.

5. The method for preparing a novel high-performance ceramic material according to claim 4, wherein in step S1, zirconium oxychloride, yttrium nitrate, magnesium aluminate spinel powder, copper oxide, zinc nitride, glass fiber, bentonite, methylhydrogen dichlorosilane, magnesium chloride hexahydrate and aluminum hydroxide are put into a pulverizer to be pulverized under the following conditions: pulverizing for 1-2h at the rotation speed of 200-300 r/min.

6. The method for preparing a novel high-performance ceramic material according to claim 4, wherein the mixed powder a prepared in the step S1 is put into a ball mill in the step S2 under the following conditions: ball milling treatment is carried out for 0.6-1.5h at the rotating speed of 300-.

7. The method for preparing a high-performance novel ceramic material according to claim 4, wherein the screen in step S2 is 60-100 mesh.

8. The method of claim 4, wherein the mixed powder b prepared in step S2 is subjected to microwave treatment at 75-82 ℃ in step S3.

9. The method as claimed in claim 8, wherein the microwave treatment is carried out at a microwave rate of 200-300W for a treatment time of 18-25 min.

10. The method for preparing a novel high-performance ceramic material according to claim 4, wherein the calcination conditions in step S3 are as follows: calcining at 920-1130 deg.c for 4-6 hr.

Technical Field

The invention belongs to the technical field of ceramic material preparation, and particularly relates to a novel high-performance ceramic material and a preparation method thereof.

Background

Specialty ceramics have been widely used in various areas of modern industry, particularly zirconia ceramics. The zirconia ceramics not only has the characteristics of acid resistance, alkali resistance, good corrosion resistance and high hardness of other special ceramics, but also has good toughness, so that the zirconia ceramics are more and more widely used in various industries, such as ceramic valves, ceramic pipelines, ceramic bearings, ceramic grinders, high-wear-resistance kitchenware and the like.

Take a ceramic valve as an example. Many industries that transport dust or slurry containing solid particles under pressure need frequent shutdown and replacement because metal valves are fast in abrasion and corrosion, thereby affecting continuous production and bringing huge economic loss. Many of these industries, which are highly corrosive and abrasive, now use ceramic valves, and it is desirable that the higher the corrosion and abrasion resistance of the ceramic valves, the better.

The ceramic part of the ceramic valve is generally made of zirconia ceramic powder, and the ceramic valve made by the prior art has lower wear resistance and can not meet the application requirement.

Disclosure of Invention

The invention provides a high-performance novel ceramic material and a preparation method thereof, and aims to solve the problems that a ceramic valve prepared by the prior art is low in wear resistance and cannot meet application requirements.

In order to solve the technical problems, the invention adopts the following technical scheme:

a high-performance novel ceramic material comprises the following raw materials in parts by weight: 32-56 parts of zirconium oxychloride, 3-5 parts of yttrium nitrate, 10-13 parts of magnesium aluminate spinel powder, 2-4 parts of copper oxide, 3-6 parts of zinc nitride, 0.3-0.5 part of glass fiber, 1-2 parts of bentonite, 1.2-2.5 parts of methylhydrodichlorosilane, 0.4-0.7 part of magnesium chloride hexahydrate and 0.2-0.5 part of aluminum hydroxide.

The technical principle of the invention is as follows: the bentonite can be used as a good cementing material and can play a role of a framework, so that the novel high-performance ceramic material disclosed by the invention plays a role of the framework, the hardness of the novel ceramic is improved, the abrasion volume is further reduced, and the abrasion resistance is improved. The methyl hydrogen dichlorosilane is combined with active groups on the surface of the bentonite by utilizing the silicon-hydrogen bond of the methyl hydrogen dichlorosilane and the hydrosilation reaction, so that the dispersion of the bentonite can be effectively promoted. In addition, the methyl hydrogen dichlorosilane can be loaded in the pore channel of the bentonite, when the bentonite is sintered at a higher temperature, the methyl hydrogen dichlorosilane is effectively decomposed, the generated silicon atoms have a bridging effect and can be connected with a bentonite framework, and then the novel high-performance ceramic is promoted not to be subjected to internal contraction in transition at a lower temperature, so that the low-temperature hardness is enhanced, the abrasion volume is reduced, and the abrasion resistance is improved. In addition, when the methylhydrogen dichlorosilane is sintered at a higher temperature, the silicon-carbon compound obtained after decomposition can improve the hardness of the ceramic, thereby reducing the wear volume and improving the wear resistance. The methylhydrogen dichlorosilane has an H bond effect, and in addition, the methylhydrogen dichlorosilane can be fused with an alkaline oxide of bentonite, and when the bentonite, the methylhydrogen dichlorosilane, magnesium chloride hexahydrate and aluminum hydroxide are sintered at a higher temperature, the bentonite, the methylhydrogen dichlorosilane, the magnesium chloride hexahydrate and the aluminum hydroxide can be compounded to form a framework of the Si-Al-Mg-Cl nonmetal alloy, so that the low-temperature hardness is improved, the wear volume is reduced, and the wear resistance is improved.

Further, the novel high-performance ceramic material comprises the following raw materials in parts by weight: 45 parts of zirconium oxychloride, 4 parts of yttrium nitrate, 12 parts of magnesium aluminate spinel powder, 3 parts of copper oxide, 5 parts of zinc nitride, 0.4 part of glass fiber, 1.6 parts of bentonite, 2 parts of methylhydrodichlorosilane, 0.5 part of magnesium chloride hexahydrate and 0.4 part of aluminum hydroxide.

Further, the particle size of the magnesium-aluminum spinel powder is 2000-3000 meshes.

The invention also provides a preparation method of the high-performance novel ceramic material, which comprises the following steps:

s1: putting zirconium oxychloride, yttrium nitrate, magnesium-aluminum spinel powder, copper oxide, zinc nitride, glass fiber, bentonite, methyl hydrogen dichlorosilane, magnesium chloride hexahydrate and aluminum hydroxide into a grinder for grinding to prepare mixed powder a;

s2: putting the mixed powder a prepared in the step S1 into a ball mill for processing, and screening to prepare mixed powder b;

s3: and (4) carrying out microwave treatment on the mixed powder b prepared in the step (S2), then calcining, and finally crushing to prepare the novel high-performance ceramic material.

Further, in step S1, zirconium oxychloride, yttrium nitrate, magnesium aluminate spinel powder, copper oxide, zinc nitride, glass fiber, bentonite, methylhydrogen dichlorosilane, magnesium chloride hexahydrate, and aluminum hydroxide are put into a pulverizer to be pulverized under the following conditions: pulverizing for 1-2h at the rotation speed of 200-300 r/min.

Further, in step S2, the mixed powder a prepared in step S1 is put into a ball mill for ball milling treatment under the following conditions: ball milling treatment is carried out for 0.6-1.5h at the rotating speed of 300-.

Further, the screen in step S2 is 60-100 mesh.

Further, in step S3, the mixed powder b prepared in step S2 is subjected to microwave treatment at 75-82 ℃.

Furthermore, the microwave rate of the microwave treatment is 200-300W, and the treatment time is 18-25 min.

Further, the conditions of the calcination in step S3: calcining at 920-1130 deg.c for 4-6 hr.

The invention has the following beneficial effects:

(1) the wear resistance of the ceramic part prepared by the method is obviously superior to that of the ceramic part prepared by the prior art, and is improved by at least 56.83 percent;

(2) the ceramic part made of the ceramic material has high wear resistance, and the wear volume is less than or equal to 0.79mm³The wear-resistant ceramic valve has excellent wear resistance, is beneficial to the continuity and durability of use, is particularly suitable for being applied to various ceramic valves, and can be widely applied to other ceramic equipment or tools requiring high wear resistance.

Detailed Description

In order to facilitate a better understanding of the invention, the following examples are given to illustrate, but not to limit the scope of the invention.

In an embodiment, the high-performance novel ceramic material comprises the following raw materials in parts by weight: 32-56 parts of zirconium oxychloride, 3-5 parts of yttrium nitrate, 10-13 parts of magnesium aluminate spinel powder, 2-4 parts of copper oxide, 3-6 parts of zinc nitride, 0.3-0.5 part of glass fiber, 1-2 parts of bentonite, 1.2-2.5 parts of methylhydrodichlorosilane, 0.4-0.7 part of magnesium chloride hexahydrate and 0.2-0.5 part of aluminum hydroxide;

the particle size of the magnalium spinel powder is 2000-3000 meshes;

the preparation method of the high-performance novel ceramic material comprises the following steps:

s1: putting zirconium oxychloride, yttrium nitrate, magnesium aluminate spinel powder, copper oxide, zinc nitride, glass fiber, bentonite, methylhydrogen dichlorosilane, magnesium chloride hexahydrate and aluminum hydroxide into a crusher, crushing for 1-2h at the rotation speed of 200 plus materials at 300r/min to prepare mixed powder a;

s2: putting the mixed powder a prepared in the step S1 into a ball mill, performing ball milling treatment for 0.6-1.5h at the rotating speed of 300-400r/min, and sieving the powder through a 60-100 mesh sieve to prepare mixed powder b;

s3: and (4) performing microwave treatment on the mixed powder b prepared in the step S2 at the temperature of 75-82 ℃, wherein the microwave power is 200-300W, the treatment time is 18-25min, then calcining at the temperature of 920-1130 ℃ for 4-6h, and finally crushing to prepare the high-performance novel ceramic material.

The present invention is illustrated by the following more specific examples.