发明名称 |
Surface coated cutting tool made of cermet having property-modifiedαtype Al2O3 layer of hard coating layer |
摘要 |
A surface coated cermet cutting tool comprising a tool body and a hard coating layer formed on the surface of the tool body, wherein the hard coating layer has a lower layer of a titanium compound layer and an upper layer of property-modified α type Al2O3 layer that has a crystal grain boundary orientation determined using a field emission type scanning electron microscope and an electron back-scattered diffraction pattern imaging device such that crystal grain boundary units of not less than 45% of all the grain boundaries show intersection angles of 15° or less between normals of (0001) planes and between normals of {10-10} planes, where a crystal grain boundary unit is a crystal grain boundary of adjacent pair of crystal grains.
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申请公布号 |
US7763346(B2) |
申请公布日期 |
2010.07.27 |
申请号 |
US20060561285 |
申请日期 |
2006.11.17 |
申请人 |
MITSUBISHI MATERIALS CORPORATION |
发明人 |
OSADA AKIRA;NAKAMURA EIJI;HONMA HISASHI |
分类号 |
B23P15/28 |
主分类号 |
B23P15/28 |
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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