Preparation method of black yttrium-stabilized zirconium oxide powder

A technology of yttrium-stabilized zirconia and zirconia, which is applied in the direction of zirconia, can solve the problems of difficult procurement of raw materials and high energy consumption in the preparation process, and achieve the effects of no surface defects, good processability, and soft and uniform color

Active Publication Date: 2020-05-29
长裕控股集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the disadvantages that the raw materials are not easy to purchase and the energy consumption of the preparation process is high.

Method used

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  • Preparation method of black yttrium-stabilized zirconium oxide powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation method of the black yttrium-stabilized zirconia powder with an yttrium oxide content of 2.1mol described in Example 1 consists of the following steps:

[0040] ① Preparation of zirconium oxychloride octahydrate solution

[0041] Weigh zirconium oxychloride octahydrate (ZrOCl) with zirconia content of 36.00%. 2 ·8H 2 O) 2138kg, be dissolved in 10690L pure water and stir evenly, the concentration of zirconia in this solution is 6.0%;

[0042] ② Preparation of yttrium chloride solution

[0043] Add 30.4 kg of yttrium trioxide into 98 kg of 30.00% hydrochloric acid solution, stir to dissolve, add 40 L of pure water, the concentration of yttrium trichloride in this solution is converted to a concentration of 18.0% of yttrium trioxide;

[0044] ③ Pour the prepared zirconium oxychloride octahydrate solution and yttrium trichloride solution into the neutralization kettle, mix well, add 400kg of organic acid with a content of 20.0%, heat to 140°C, keep it warm...

Embodiment 2

[0049] The preparation method of the black yttrium-stabilized zirconia powder with the yttrium oxide content of 2.6mol described in the present embodiment 2 consists of the following steps:

[0050] ① Preparation of zirconium oxychloride octahydrate solution

[0051] Weigh zirconium oxychloride octahydrate (ZrOCl) with zirconia content of 36.00%. 2 ·8H 2 O) 2118kg, dissolved in 10590m 3 Stir evenly in pure water, the concentration of zirconia in this solution is 6.0%;

[0052] ② Preparation of yttrium chloride solution

[0053] Add 37.36 kg of diyttrium trioxide into 110 kg of 30.00% hydrochloric acid solution, stir to dissolve, add 60 L of pure water, the concentration of yttrium trichloride in this solution is converted to 18.0% of diyttrium trioxide;

[0054] ③ Pour the prepared zirconium oxychloride octahydrate solution and yttrium trichloride solution into the neutralization kettle, mix well, add 400kg of organic acid with a content of 20.0%, heat to 145°C, keep it wa...

Embodiment 3

[0059] The preparation method of the black yttrium-stabilized zirconia powder with an yttrium oxide content of 3.2mol described in Example 3 consists of the following steps:

[0060] ① Preparation of zirconium oxychloride octahydrate solution

[0061] Weigh zirconium oxychloride octahydrate (ZrOCl) with zirconia content of 36.00%. 2 ·8H 2 O) 2096kg, dissolved in 10477L pure water and stirred evenly, the concentration of zirconia in this solution is 6.0%;

[0062] ② Preparation of yttrium chloride solution

[0063] Add 45.6 kg of yttrium trioxide into 130 kg of 30.00% hydrochloric acid solution, stir to dissolve, add 78 L of pure water, the concentration of yttrium trichloride in this solution is converted to a concentration of 18.0% of yttrium trioxide;

[0064] ③ Pour the prepared zirconium oxychloride octahydrate solution and yttrium trichloride solution into the neutralization kettle, mix well, add 400kg of organic acid with a content of 20.0%, heat to 135°C, keep it war...

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Abstract

The invention belongs to the technical field of inorganic new materials, and particularly relates to a preparation method of black yttrium-stabilized zirconium oxide powder. The preparation method comprises the steps: mixing a zirconium oxychloride solution and a yttrium trichloride solution in a proportion; adding an organic acid to generate a gel, adding an ammonia water solution to neutralize and precipitate, washing, filtering and dechlorinating, calcining an obtained filter cake to obtain a precursor powder, adding a coloring agent and a binding agent, ball-milling, sanding and crushing,adding an adhesive and a release agent, uniformly mixing, spraying, granulating and drying to obtain the yttrium-stabilized zirconium oxide powder. The invention relates to the preparation method of black yttrium-stabilized zirconium oxide powder. The process is simple, the yield is high, the produced powder is good in stability, uniform in particle size distribution, good in flowability and stable in shrinkage rate; the sintering temperature is 1350 DEG C, which is 100 DEG C lower than the temperature of common zirconium oxide ceramic production, moulding is convenient, the blank strength ishigh, the processability is good, and black ceramic products prepared from the powder has the advantages of high strength, good toughness, good stability and the like.

Description

technical field [0001] The invention belongs to the technical field of new inorganic materials, and in particular relates to a preparation method of black yttrium-stabilized zirconia powder. Background technique [0002] In recent years, my country's zirconium industry has developed rapidly, its production capacity ranks first in the world, and its technical level also ranks among the world's advanced ranks. Zirconia (ZrO 2 ) has been widely used in ceramics, electronics, jewelry, metallurgical industry, catalyst, medical treatment, automobile exhaust purification, etc. Zirconium series products based on zirconia are known as one of the most promising high-tech materials in the 21st century. [0003] The preparation method of the black yttrium-stabilized zirconia powder recorded in the prior art is: adding black pigment to zirconia. The disadvantage of this method is that the pigment and the zirconia precursor are mixed unevenly, which makes it difficult to form and the gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/02C04B35/48C04B35/626
CPCC01G25/02C04B35/48C04B35/62605C04B2235/3225C04B2235/3246C04B2235/9661C04B2235/5436C01P2006/12C01P2006/11C01P2004/61
Inventor 刘策房永民王德昌李园园郭明玉王全君
Owner 长裕控股集团股份有限公司
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