发明名称 |
Tough cermet and process for producing the same |
摘要 |
A tough cermet made from 20-92 weight % of TiC and/or TiCN, 5-50 weight % of WC and 3-30 weight % of an iron-group metal. This tough cermet has a three phase grain microstructure consisting of a core phase rich in TiC and/or TiCN, an intermediate phase rich in WC and surrounding the core phase, and an outer phase made of (Ti,W)C and/or (Ti,W)CN and surrounding the intermediate phase. Because of this three-phase microstructure, the cermet has high toughness without sacrificing hardness. It is prepared by using WC powder of as fine as less than 3 mu m, without taking the course of forming a solid solution of TiC and/or TiCN and WC and pulverizing it.
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申请公布号 |
US4778521(A) |
申请公布日期 |
1988.10.18 |
申请号 |
US19860869716 |
申请日期 |
1986.06.02 |
申请人 |
HITACHI METALS, LTD.;HITACHI CARBIDE TOOLS LTD. |
发明人 |
IYORI, YUSUKE;IDA, HISAAKI |
分类号 |
B23B27/14;C22C29/00;C22C29/02;C22C29/04;C22C29/06;C22C29/08;C22C29/10;(IPC1-7):C22C29/04 |
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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