透光性ジルコニア焼結体及びその製造方法及びその用途

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专利权人:

東ソー株式会社

发明人:

藤崎 浩之,河村 清隆,今井 紘平

申请号：

JP2008328500

公开号：

JP5707667B2

申请日:

2008.12.24

申请国别(地区):

JP

年份:

2015

代理人:

摘要：

PROBLEM TO BE SOLVED: To solve a problem that special sintering techniques such as HIP sintering and the like are necessary for the production of a zirconia sintered compact having high density, high strength and excellent light-transmitting appearance.

SOLUTION: A light-transmitting zirconia sintered compact comprising zirconia which contains 2-4 mol% yttria as a stabilizer and which does not contain alumina and having a relative density of 99.8% or more and a total light transmittance measured at a thickness of 1.0 mm of 35% or more is produced by normal pressure sintering. It is favorable that powders having a BET specific surface area of 10-16 m2/gm, an average particle diameter of 0.4-0.7 &mum and a sintering shrinkage rate (&Delta&rho/&DeltaT:g/cm3°C) in the normal pressure sintering of 0.0120 or more and 0.0135 or less are sintered at a normal pressure and in an atmospheric air.

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