- 专利标题： SUPERFINE WC POWDER AND PRODUCTION THEREOF
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申请号： JP334690申请日： 1990-01-12
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公开(公告)号： JPH03208811A公开(公告)日： 1991-09-12
- 发明人: YAMAMOTO RYOJI , ASADA NOBUAKI , NAGASHIMA MASATOSHI , MARUYAMA MASAO , MORI SHIGEYOSHI
- 申请人： TOKYO TUNGSTEN KK , SUMITOMO ELECTRIC INDUSTRIES
- 专利权人： TOKYO TUNGSTEN KK,SUMITOMO ELECTRIC INDUSTRIES
- 当前专利权人： TOKYO TUNGSTEN KK,SUMITOMO ELECTRIC INDUSTRIES
- 优先权： JP334690 1990-01-12
- 主分类号： C01B32/949
- IPC分类号： C01B32/949
摘要：
PURPOSE:To safely and directly produce superfine WC powder from WO3 in simplified producing stages by mixing WO3 powder with carbon powder, heating the mixture in a flow of gaseous N2, then heating and pulverizing the mixture in gaseous H2. CONSTITUTION:WO3 powder of
公开/授权文献
- JP2617140B2 公开/授权日：1997-06-04
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