发明申请
- 专利标题: METHOD FOR PRODUCING SINTERED CUBIC BORON NITRIDE COMPACT
- 专利标题(中): 生产烧结陶瓷氮化物复合材料的方法
-
申请号: US13022834申请日: 2011-02-08
-
公开(公告)号: US20110192093A1公开(公告)日: 2011-08-11
- 发明人: Akhmadi Eko Wardoyo , Itsurou Tajima , Minoru Akaishi
- 申请人: Akhmadi Eko Wardoyo , Itsurou Tajima , Minoru Akaishi
- 申请人地址: JP Tokyo
- 专利权人: Mitsubishi Materials Corporation
- 当前专利权人: Mitsubishi Materials Corporation
- 当前专利权人地址: JP Tokyo
- 优先权: JPP2010-026539 20100209
- 主分类号: B01J3/06
- IPC分类号: B01J3/06 ; C04B35/5831 ; B24D3/00
摘要:
A method for producing a highly uniform and highly dense sintered cubic boron nitride compact having high hardness by sintering at a milder condition without a binder, is provided. The method includes deflocculating secondary particles in cubic boron nitride starting powders by dispersing the starting powders in a solution of a deflocculant; molding the green compact after removing the solution of the deflocculant from the starting powders; and then sintering the green compact in the presence of a supercritical fluid source in a supercritical state by pressing and heating the green compact together with the supercritical fluid source. The supercritical fluid source can be one or more selected from a group consisted of polyvinylidene chloride, polyvinyl chloride, polyethylene, polypropylene, polystyrene, a polyester and an ABS resin. In the sintering, the pressure is 5 GPa or higher, and the temperature is 1400° C. or higher. According to the method, a highly uniform and highly dense sintered cubic boron nitride sintered compact having high hardness, can be obtained.
公开/授权文献
- US08657893B2 Method for producing sintered cubic boron nitride compact 公开/授权日:2014-02-25