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Preparation method of yttrium-stabilized zirconium powder for structural member

A technology of yttrium-stabilized and structural parts, which is applied in the field of preparation of yttrium-stabilized zirconium powder for structural parts, which can solve the problems of difficult procurement of raw materials and high energy consumption in the preparation process, and achieve good fluidity, uniform particle size distribution and high yield Effect

Active Publication Date: 2020-06-05
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 yttrium-stabilized zirconium powder for structural member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of the yttrium-stabilized zirconium powder for structural parts with an yttrium oxide content of 2.8mol described in Example 1 consists of the following steps:

[0036]① Preparation of zirconium oxychloride octahydrate solution

[0037] Weigh zirconium oxychloride octahydrate (ZrOCl) with zirconia content of 36.00%. 2 ·8H 2 (0) 2610kg, be dissolved in 9140L pure water and stir evenly, the zirconia concentration of this solution is 8.0%;

[0038] ② Preparation of yttrium trichloride solution and cerium trichloride solution

[0039] Add 50 kg of yttrium trioxide into 120 kg of 30.00% hydrochloric acid solution, stir to dissolve, add 108 L of pure water, and stir evenly. The concentration of yttrium trichloride in this solution is converted to 18.0% of the concentration of yttrium trioxide; Cerium trichloride (containing 7 crystal waters) was dissolved in 87L of pure water, stirred evenly, and the concentration of cerium trichloride in this soluti...

Embodiment 2

[0045] The preparation method of yttrium-stabilized zirconium powder for structural parts with an yttrium oxide content of 3.2mol described in Example 2 consists of the following steps:

[0046] ① Preparation of zirconium oxychloride octahydrate solution

[0047] Weighing zirconium oxychloride octahydrate (ZrOCl2 8H 2 O) 2592kg, be dissolved in 9070L pure water and stir evenly, the concentration of this solution zirconium oxide is 8.0%;

[0048] ② Preparation of yttrium trichloride solution and cerium trichloride solution

[0049] Add 57kg of diyttrium trioxide into 125kg of 30.00% hydrochloric acid solution, stir to dissolve, add 135L of pure water, and stir evenly. Cerium trichloride (containing 7 crystal waters) was dissolved in 87L of pure water, stirred evenly, and the concentration of cerium trichloride in this solution was converted into diyttrium trioxide concentration to be 20.0%;

[0050] ③The prepared zirconium oxychloride octahydrate solution \ yttrium trichlori...

Embodiment 3

[0055] The preparation method of yttrium-stabilized zirconium powder for structural parts with an yttrium oxide content of 2.1mol described in Example 3 consists of the following steps:

[0056] Follow the steps below to produce:

[0057] ①Preparation of hydrated zirconium oxychloride solution

[0058] Weigh zirconium oxychloride octahydrate (ZrOCl) with zirconia content of 36.00%. 2 ·8H 2 O) 2617kg, be dissolved in 9158L pure water and stir evenly, the concentration of zirconia in this solution is 18.0%;

[0059] ② Preparation of yttrium chloride solution and cerium trichloride solution

[0060] Add 38kg of yttrium trioxide into 95kg of 30.00% hydrochloric acid solution, stir to dissolve, add 78L of pure water, and stir evenly. The concentration of yttrium trichloride in this solution is converted into 18.0% of the concentration of yttrium trioxide; 43.14kg Cerium trichloride (containing 7 crystalline waters) was dissolved in 174L pure water, stirred evenly, and the conce...

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Abstract

The invention belongs to the technical field of inorganic new materials, and particularly relates to a preparation method of yttrium-stabilized zirconium powder for a structural member. The preparation method comprises mixing a zirconium oxychloride solution, a cerium trichloride solution and a yttrium trichloride solution in proportion, adding organic acid to generate gel, adding an ammonia watersolution to neutralize and precipitate, carrying out washing, filtering and dechlorinating, calcining a filter cake to obtain precursor powder, adding Fe2O3, carrying out ball milling and sanding crushing, adding organic additives such as a binder, uniformly mixing, carrying out spray granulation, and drying to obtain the yttrium-stabilized zirconium powder for the structural member. The preparation method of the yttrium-stabilized zirconium powder for the structural part is simple and convenient in process and high in yield, the produced powder is uniform in particle size distribution, goodin fluidity, stable in shrinkage rate, easy to form and high in green body strength, and fine processing such as cutting, milling and punching can be conducted on green bodies and sintered finished products to produce ceramic products high in strength, good in stability and complex in structure.

Description

technical field [0001] The invention belongs to the technical field of new inorganic materials, and in particular relates to a preparation method of yttrium-stabilized zirconium powder for structural parts. 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] Yttrium-stabilized zirconia is to solve the problem of instability and phase transition of zirconia products by adding stabilizer yttrium oxide to zirconia. The existing production processes are mainly physical mixing method, co-precipitation method, hydrolysis ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/632C04B35/634C04B35/636
CPCC04B35/48C04B35/63416C04B35/63488C04B35/63444C04B35/632C04B35/6365C04B2235/3246C04B2235/3225C04B2235/3217C04B2235/3229C04B2235/77C04B2235/96
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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