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Translucent rare earth oxide sintered article and method for production thereof 发明授权

2022-07-31 1030 762K 0

专利信息

申请日期 2025-02-24 申请号 US10363352
公开(公告)号 US6825144B2 公开(公告)日 2004-11-30
公开国别 US 申请人省市代码 全国
申请人 Konoshima Chemical Co Ltd
简介 A high-purity rare earth metal oxide material powder of purity of 99.9% or over, of which Al content is 5-100 wtppm in metal weight and Si content is 10 wtppm or under in metal weight, and a binder are used to prepare a molding body of which molding density is 58% or over of the theoretical density. The binder is eliminated by thermal treatment, and then the molding body is sintered in an atmosphere of hydrogen or a rare gas or a mixture of them or in a vacuum at a temperature being not lower than 1450° C. and not higher than 1700° C. for 0.5 hour or over to prepare A transparent sintered rare earth metal oxide body represented by a general formula R2O3(R being at least one element of a group comprising Y, Dy, Ho, Er, Tm, Yb and Lu).


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