Preparation method of zirconia-based metal ceramic material

A technology of ceramic materials and zirconia, which is applied in the field of zirconia-based cermet material preparation, can solve problems such as failure to meet technical requirements, and achieve the effects of uniform internal structure distribution, high production quality, and low mold wear

Inactive Publication Date: 2018-11-02
FOSHAN HUAQIANG XIEXING CERAMIC CO LTD
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of zirconia-based cermet material to solve the existing technical defects and technical requirements that cannot be met

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  • Preparation method of zirconia-based metal ceramic material

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in combination with the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] The invention provides a technical solution: a method for preparing a zirconia-based cermet material, comprising the following steps:

[0019] Step a. make zirconium hydroxide gel and yttrium hydroxide gel: take out appropriate lye such as sodium hydroxide, potassium hydroxide, ammoniacal liquor and urea etc. as precipitation agent, from ZrOCl 2 ·8H 2 Precipitation and leaching of zirconium hydroxide gel and yttrium hydroxide gel in salt solutions such as O;

[0020] Step b. making ...

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Abstract

The invention discloses a preparation method of a zirconia-based metal ceramic material, comprising the steps of a, manufacturing zirconia gel and yttrium hydroxide gel, to be specific, taking out suitable alkaline liquids, such as sodium hydroxide, potassium hydroxide, liquid ammonia and urea, as precipitating agents, precipitating to leach out zirconia gel and yttrium hydroxide gel from salt solutions, such as ZrOCl2 8H2O; b, manufacturing zirconia superfine powder, to be specific, and subjecting the leached zirconia gel and yttrium hydroxide gel to filtering before performing washing, drying, calcining and other steps to obtain zirconia superfine powder. The preparation method herein has the advantages that by suitably reducing calcining temperature and blowing in a protective gas, particles form dust to reduce particle aggregation; the precipitating means never causes clustering during the manufacture of the zirconia superfine powder, the zirconia superfine powder has good dispersibility and high sintering activity, and zirconia-based metal ceramic has good manufacture quality.

Description

technical field [0001] The invention relates to the technical field of zirconia ceramic production equipment, in particular to a method for preparing a zirconia-based cermet material. Background technique [0002] Zirconia ceramics are white, yellow or gray when they contain impurities, and generally contain HfO2, which is not easy to separate. There are three crystal states of pure ZrO2 under normal pressure. The production of zirconia ceramics requires the preparation of powders with high purity, good dispersion, ultrafine particles, and narrow particle size distribution. There are many methods for preparing zirconia ultrafine powders. The purification of zirconia mainly includes chlorination and thermal decomposition methods, alkali metal Oxidative decomposition method, lime melting method, plasma arc method, precipitation method, colloid method, hydrolysis method, spray pyrolysis method, etc., most of the zirconia ultrafine powder is processed by precipitation method in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622
CPCC04B35/48C04B35/622C04B2235/77
Inventor 吴锦铭
Owner FOSHAN HUAQIANG XIEXING CERAMIC CO LTD
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