发明名称 |
NITRIDE BASED CUTTING TOOL |
摘要 |
A nitride based ceramic cutting tool is described comprising from 50 to 90% by weight Si2N4, from 5 to 45% by weight TiN, and from 5 to 45% by weight sintering aid, said sintering aid comprising (1) at least one of Y2O3 and Dy2O3 and (2) Al2O3 alone or a mixture of AlN and Al2O3, said mixture comprising from 5 to 65% by weight AlN, and the weight ratio of (1) at least one of Y2O3 and Dy2O3 to (2) Al2O3 alone or the AlN and Al2O3 mixture being 3:1 to 1:3. |
申请公布号 |
EP0113660(B1) |
申请公布日期 |
1991.03.27 |
申请号 |
EP19840100039 |
申请日期 |
1984.01.03 |
申请人 |
NGK SPARK PLUG CO. LTD. |
发明人 |
TANAKA, HIROSHI C/O NGK SPARK PLUG CO., LTD.;BABA, HIDETOSHI C/O NGK SPARK PLUG CO., LTD. |
分类号 |
B23B27/14;C04B35/584;C04B35/597;C04B41/50;C04B41/52;C04B41/87;C04B41/89 |
主分类号 |
B23B27/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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