发明名称 |
Surface coated cutting tool made of cermet having property-modified alpha type Al2O3 layer of hard coating layer |
摘要 |
<p>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 ± type Al 2 O 3 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.</p> |
申请公布号 |
EP1788124(B1) |
申请公布日期 |
2008.09.24 |
申请号 |
EP20060124186 |
申请日期 |
2006.11.16 |
申请人 |
MITSUBISHI MATERIALS CORPORATION |
发明人 |
OSADA, AKIRA;HONMA, HISASHI;NAKAMURA, EIJI |
分类号 |
C23C30/00;B23B27/14;C23C16/40 |
主分类号 |
C23C30/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|