发明名称 |
HIGH-STRENGTH TRANSPARENT ZIRCONIA SINTERED BODY, PROCESS FOR PRODUCING THE SAME, AND USES THEREOF |
摘要 |
Translucent zirconia sintered bodies have had a problem that incorporation of titania improves translucency but lowers mechanical strength. The invention provides: a zirconia sintered body containing titanium oxide, the sintered body containing 6-15 mol % yttria and 3-20 mol % titania and having an in-line transmission of 50% or higher when examined at a sample thickness of 1 mm and a measuring wavelength of 600 nm; and a zirconia sintered body having especially high translucency which is a high-quality transparent zirconia sintered body that contains 3-20 mol % titania and 6-15 mol % yttria and has an in-line transmission, as measured at a wavelength of 600 nm, of 73% or higher and a haze value of 2.0% or less and that is highly translucent and is undimmed (cloudless). The invention further relates to a production process in which a powder having the composition is molded and thereafter subjected to ordinary-pressure primary sintering and hot isostatic pressing (HIP) under specific conditions. |
申请公布号 |
US2012058883(A1) |
申请公布日期 |
2012.03.08 |
申请号 |
US201013320441 |
申请日期 |
2010.06.03 |
申请人 |
YAMASHITA ISAO;KUDOU MASAYUKI;TSUKUMA KOJI;TOSOH CORPORATION |
发明人 |
YAMASHITA ISAO;KUDOU MASAYUKI;TSUKUMA KOJI |
分类号 |
C04B35/49;B29C67/04;B29D11/00 |
主分类号 |
C04B35/49 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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