| 发明名称 |
SURFACE-COATED BORON NITRIDE SINTERED TOOL |
| 摘要 |
A surface-coated boron nitride sintered body tool is provided, in which at least a cutting edge portion includes a cubic boron nitride sintered body and a coating film formed on a surface of the cubic boron nitride sintered body. The coating film contains Si and includes a B layer formed by alternately stacking one or more of each of a B1 compound layer and a B2 compound layer that are different in composition. A ratio between an average thickness t 1 of the B 1 compound layers and an average thickness t2 of the B2 compound layers is defined as t2/t1 that satisfies a relation of 0.5 < t2/t1 ‰¤ 10 |
| 申请公布号 |
EP3017897(A4) |
申请公布日期 |
2017.03.01 |
| 申请号 |
EP20140820479 |
申请日期 |
2014.06.05 |
| 申请人 |
Sumitomo Electric Hardmetal Corp. |
发明人 |
TSUKIHARA, Nozomi;OKAMURA, Katsumi;SETOYAMA, Makoto |
| 分类号 |
C04B41/52;C04B41/00;C04B41/89;C23C14/02;C23C14/06;C23C28/00;C23C28/04;C23C30/00 |
主分类号 |
C04B41/52 |
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