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CORPS FRITTÉ DE ZIRCONE COLORÉE TRANSMETTANT LA LUMIÈRE ET UTILISATION ASSOCIÉE
专利权人:
TOSOH CORPORATION
发明人:
KAWAMURA, KIYOTAKA,FUJISAKI, HIROYUKI
申请号:
EP13866523
公开号:
EP2939993A4
申请日:
2013.12.26
申请国别(地区):
EP
年份:
2016
代理人:
摘要:
To provide a pink-colored zirconia sintered body having a high sintered body density and strength, and a colored translucency useful for a dental material, particularly for a mill blank or an orthodontic bracket, which has a color tone quite similar to natural teeth and excellent translucency and also having high aesthetic properties. Provided is a colored translucent zirconia sintered body which comprises from 2 to 4 mol% of yttria, from 0.02 to 0.8 mol% of Er 2 O 3 , at least 20 and less than 2,000 ppm, as calculated as Fe 2 O 3 , of an iron compound, at least 0.005 and less than 0.2 wt% of Al 2 O 3 and the rest being zirconia, and which has a lightness L* of from 55 to 75, a* of from 0 to 10 and b* of from 0 to 30 as chromatic parameters stipulated in JIS-Z8729, has a relative density of at least 99.80% and has a total light transmittance of at least 18% and at most 40% as measured at a sample thickness of 1 mm using a D65 light source.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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