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Preparation method for yttria-stabilized zirconia powder

A technology of zirconia powder and yttrium oxide, which is applied in the field of preparation of zirconia powder

Inactive Publication Date: 2016-04-20
DONGGUAN XINBO STRUCTURAL CERAMICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there is still a technical demand for further improvement in the preparation method of zirconia powder, the material of zirconia ceramic knives.

Method used

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  • Preparation method for yttria-stabilized zirconia powder
  • Preparation method for yttria-stabilized zirconia powder
  • Preparation method for yttria-stabilized zirconia powder

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Embodiment Construction

[0020] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describin...

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Abstract

The invention relates to a preparation method for yttria-stabilized zirconia powder. The method comprises the steps that zirconium oxychloride and yttrium nitrate are added into a polyvinyl alcohol solution, the mixture is stirred to be uniform, then a glutaraldehyde solution is added, and the mixture is stirred for 8-15 min at the temperature of 40-50 DEG C to obtain gel, wherein the molar ratio of zirconium oxychloride to yttrium nitrate is 97 to 3; the gel is taken out for standing before being cut into blocks, placed in ammonium hydroxide to be soaked for 15-20 hours and then dried and calcined to obtain the yttria-stabilized zirconia powder. Through the preparation method for the yttria-stabilized zirconia powder, formed zirconia crystal nuclei grow in a cross-linking network provided by polyvinyl alcohol gel liquid; due to limitation of the three-dimensional network, zirconia particles can be prevented from colliding with one another and gathering, agglomeration is reduced, and the yttria-stabilized zirconia powder with a small particle size and good uniformity can be obtained conveniently.

Description

technical field [0001] The invention relates to the technical field of zirconia ceramics, in particular to a preparation method of yttria-stabilized zirconia powder. Background technique [0002] As a new type of high-tech ceramics, zirconia ceramics have properties such as high strength, high fracture toughness, high hardness, excellent heat insulation performance and high temperature resistance, and are widely used in the fields of structural ceramics and functional ceramics. In addition, zirconia is non-magnetic, non-conductive, non-rusting, and wear-resistant. It is also widely used in the field of biomedical equipment, props, and tools. Recently, partially stabilized zirconia (TZP) can be used to prepare magnetically shielded watch cases, corrosion-resistant watch parts and other instrument parts by powder metallurgy. In addition to the above applications, TZP is also widely used in decoration, life, medicine, piezoelectric ceramics, sensor ceramics and other fields. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/626C04B35/632C04B35/634
CPCC04B35/48C04B35/626C04B35/632C04B35/63416C04B2235/3225
Inventor 利剑陈兰桂蒋永洪孙亮李伟王文利
Owner DONGGUAN XINBO STRUCTURAL CERAMICS CO LTD
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