Process of preparing zirconia and yttria with Y-doped cubic zirconia powder

A phase zirconia, powder-based technology, applied in the field of preparation of zirconium and yttrium oxides, can solve the problems of mutual interference between zirconium and yttrium, and the troublesome determination of hafnium in zirconium.
CN1986423AInactive Publication Date: 2007-06-27王必庆
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
王必庆
Publication Date
2007-06-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The process of preparing zirconia and yttria with Y-doped cubic zirconia powder includes the following steps: alkali fusing and sintering Y-doped cubic zirconia powder, water washing to eliminate sodium, acidifying and concentrating to obtain Zr crystal, oxychlorination to re-crystallize and purify, and high temperature calcining to obtain high purity jewel level zirconia; concentrating Y-containing mother liquid to crystallize zirconia, purifying high Y mother liquid, precipitating Y in oxalic acid solution, and high temperature calcining to obtain high purity jewel level yttria. The present invention has relatively low cost.
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Description

1. Technical field

[0001] The invention relates to a method for preparing zirconium and yttrium oxides, in particular to a method for preparing zirconia and yttrium oxide from yttrium-doped cubic zirconia powder. 2. Background technology

[0002] Zirconia and yttrium oxide are mainly used in the manufacture of functional ceramics and structural ceramics in a broad sense. Their common fields involve military industry, aerospace, atomic energy application industry, electronic components, special gemstones, glass, refractory materials, ceramic engines, solid fuel cells, etc. In addition, zirconia is the raw material for producing zirconium sponge, and can also be used in the manufacture of insulating ceramics (electric porcelain, stone porcelain), glazes, pigments, polishing powder, automobile exhaust purifiers, etc.; yttrium oxide is the raw material for producing metal yttrium , can also be used in the manufacture of fluorescent materials, superconducting materials, etc. Th...

Claims

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