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CRUCIBLE FOR MELTING RARE EARTH ELEMENT ALLOY 发明授权

2023-01-04 4020 323K 0

专利信息

申请日期 2025-07-10 申请号 EP02780089
公开(公告)号 EP1452812B1 公开(公告)日 2014-04-23
公开国别 EP 申请人省市代码 全国
申请人 Shin Etsu Chemical Co Ltd
简介 A crucible comprising Al2O3 and at least one selected from rare earth oxides inclusive of Y2O3 as main components and characterized by firing at 500-1, 800 DEG C, the distribution of the rare earth oxide at a higher proportion in a fine particle portion having a particle size of up to 0.5 mm than in a coarse particle portion having a particle size in excess of 0.5 mm, and the substantial absence of the reaction product of the rare earth oxide with Al2O3 is suitable for the melting of a rare earth alloy.


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