发明授权
US4966626A Sintered ferro alloy having heat and wear resistance and process for
making
失效
具有耐热和耐磨性的烧结铁合金和制造方法
- 专利标题: Sintered ferro alloy having heat and wear resistance and process for making
- 专利标题(中): 具有耐热和耐磨性的烧结铁合金和制造方法
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申请号: US373053申请日: 1989-06-28
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公开(公告)号: US4966626A公开(公告)日: 1990-10-30
- 发明人: Akira Fujiki , Yoshiteru Yasuda , Hiroyuki Endo , Yutaka Ikenoue , Keitaro Suzuki
- 申请人: Akira Fujiki , Yoshiteru Yasuda , Hiroyuki Endo , Yutaka Ikenoue , Keitaro Suzuki
- 申请人地址: JPX Yokohama JPX Matsudo
- 专利权人: Nissan Motor Company, Limited,Hitachi Powdered Metals Company, Limited
- 当前专利权人: Nissan Motor Company, Limited,Hitachi Powdered Metals Company, Limited
- 当前专利权人地址: JPX Yokohama JPX Matsudo
- 优先权: JPX63-158199 19880628
- 主分类号: C22C33/02
- IPC分类号: C22C33/02 ; C22C38/00 ; C22C38/56 ; F01L3/22 ; F02F7/00
摘要:
A sintered ferro alloy comprises 5 to 25 wt % of one or two elements selected from Mo and W, 2 to 10 wt % of Cr, 0.1 to 0.9 wt % of Si, less than or equal to 0.7 wt % of Mn, less than or equal to 0.05 wt % of P, 0.5 to 2.0 wt % of C, 0.5 to 2.0 wt % of B, 0.1 to 7.0 wt % of at least one element selected from borides of La, Ce, Nd, Sm, Eu, Gd, Yb, Y or Sc, residual Fe, and contaminants. Also the alloy may comprise less than or equal to 20 wt % of at least one element selected from V, Nb, Ta, Ti, Zr, Hf, Co or Ni, if necessary. The alloy is produced by mixing the above mentioned components and pressurizing them in an Fe matrix, then sintering the pressurized mixture at 1150.degree. C. to 1260.degree. C. for 60 min. and reheating after sintering. This alloy has wear and heat resistance and can be utilized as valve seats for internal combustion engines in automotive vehicles.