客服热线:18202992950

Silicon nitride sintered material and production prodess thereof 发明授权

2023-08-03 4070 160K 0

专利信息

申请日期 2025-07-09 申请号 EP02251634
公开(公告)号 EP1238954B1 公开(公告)日 2012-08-01
公开国别 EP 申请人省市代码 全国
申请人 NGK SPARK PLUG CO LTD
简介 The silicon nitride sintered material of the present invention contains silicon nitride, a Group 4a through 6a element, a rare earth element, and silicon carbide, and is characterized in that the amount of the rare earth element as reduced to a certain oxide thereof is 5.7-10.3 mol%; the ratio by mol of subtraction remainder oxygen amount as calculated in relation to the oxygen contained in the sintered material, the remainder oxygen amount being expressed in terms of silicon dioxide, to the amount of oxygen contained in the sintered material is at least 0.50 and less than 0.70; a four-component crystalline phase of rare earth element - silicon - oxygen - nitrogen is not present; and the thermal expansion coefficient is at least 3.7 ppm/ DEG C between room temperature and 1, 000 DEG C.


您还没有登录,请登录后查看下载地址


反对 0举报 0 收藏 0 打赏 0评论 0
下载排行
网站首页  |  关于我们  |  联系方式  |  使用协议  |  版权隐私  |  网站地图  |  排名推广  |  广告服务  |  积分换礼  |  网站留言  |  RSS订阅  |  违规举报  |  京ICP备2021025988号-4