发明名称 |
Diamond-coated hard material, throwaway insert and a process for the production thereof |
摘要 |
PCT No. PCT/JP91/01359 Sec. 371 Date Jul. 14, 1992 Sec. 102(e) Date Jul. 14, 1992 PCT Filed Oct. 4, 1991 PCT Pub. No. WO92/05904 PCT Pub. Date Apr. 16, 1992.An object of the present invention is to provide a diamond-coated hard material having a high bonding strength to a substrate and a diamond-coated throwaway insert capable of cutting various light alloys such as Al-Si alloys at a high cutting rate for a long time. This object can effectively be attained by a diamond-coated hard material comprising a sintered body consisting of Si3N4 as a predominant component, at least a part of the sintered body having a sintered surface at least a part of which is coated with diamond and a diamond-coated throwaway insert having a diamond- or diamond-like carbon-coated layer with a thickness of 0.1 to 200 mu m, deposited from gaseous phase, on the surface of a substrate consisting of Si3N4, as a predominant component, in which the surface state of the substrate is maintained as sintered and a part or whole of the sintered surface is coated with the diamond- or diamond-like carbon-coated layer.
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申请公布号 |
US5328761(A) |
申请公布日期 |
1994.07.12 |
申请号 |
US19920910094 |
申请日期 |
1992.07.14 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
OMORI, NAOYA;NOMURA, TOSHIO |
分类号 |
B23B27/14;B23B51/00;B23B51/02;B23B51/04;C04B41/50;C04B41/85;C23C16/02;C23C16/27;(IPC1-7):B23B27/14 |
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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