申请日期 | 2025-07-26 | 申请号 | JP2005178590 |
公开(公告)号 | JP4804046B2 | 公开(公告)日 | 2011-10-26 |
公开国别 | JP | 申请人省市代码 | 全国 |
申请人 | NGK Insulators Ltd4064 | ||
简介 | An aluminum nitride ceramic including aluminum nitride grains and grain boundary phases comprises a grain boundary phase-rich layer including more amount of the grain boundary phases in a surface layer of the aluminum nitride ceramic than in an inside of the aluminum nitride ceramic. The grain boundary phases in the grain boundary phase-rich layer include at least one of rare earth element and alkali earth element. |
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