Preparation method of yttrium stabilized zirconium oxide powder with low monoclinic phase and high activity

A technology of yttrium-stabilized zirconia and monoclinic phase, applied in zirconia and other directions, can solve the problems of low yield of ceramic products and less production of high-precision ceramic parts, and achieve low content of monoclinic phase, less agglomeration, and uniform particle size Effect
CN103288131AActive Publication Date: 2013-09-11西安迈克森新材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
西安迈克森新材料有限公司
Publication Date
2013-09-11

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Abstract

The invention discloses a preparation method of yttrium stabilized zirconium oxide powder with low monoclinic phase and high activity. The preparation method comprises the following steps of: reacting zirconium oxychloride serving as a raw material with concentrated sulfuric acid at a high temperature to produce zirconium basic sulfate; performing precipitation reaction on the zirconium basic sulfate serving as a carrier, yttrium chloride and ammonia water in an aqueous solution to finally produce a zirconium stabilized precursor; and mechanically diffusing, drying, sintering and introducing gas flow to finally obtain the yttrium stabilized zirconium oxide powder. The yttrium stabilized zirconium oxide powder is prepared by a chemical and mechanical combined method; and the prepared powder has low monoclinic phase content, less agglomerates and high sintering activity.
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Description

technical field

[0001] The invention belongs to the field of material chemistry, and in particular relates to a preparation method of yttrium-stabilized zirconia powder with low monoclinic phase and high activity. Background technique

[0002] Zirconium dioxide is a very stable oxide with good thermal and chemical stability, excellent high-temperature electrical conductivity, high high-temperature strength and toughness, stable performance and corrosion resistance, and is currently a rapidly developing special ceramic It can be used to produce high-temperature structural ceramics, electronic ceramics, bio-ceramics and ultra-high temperature refractory materials.

[0003] Pure zirconia is difficult to produce zirconia ceramics, usually ZrO 2 There are three isomorphs, monoclinic (Monoclinic System), tetragonal (Tetragonal)

[0004] System), cubic crystal form (Cubic System), the conversion of the three crystal forms is as follows:

[0005]

[0006] The crystal form tran...

Claims

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