发明授权
- 专利标题： Wear resistant member for electronic equipment, and bearing and spindle motor therewith
- 专利标题（中）： 电子设备耐磨件，轴承和主轴电机
-
申请号： US09927930申请日： 2001-08-13
-
公开(公告)号： US06642165B2公开(公告)日： 2003-11-04
- 发明人: Kimiya Miyashita , Michiyasu Komatsu , Hisao Yabe , Minoru Takao , Yukihiro Takenami , Yoshiyuki Fukuda , Katsuhiro Shinosawa
- 申请人： Kimiya Miyashita , Michiyasu Komatsu , Hisao Yabe , Minoru Takao , Yukihiro Takenami , Yoshiyuki Fukuda , Katsuhiro Shinosawa
- 优先权： JPP2000-249326 20000821; JPP2000-249327 20000821; JPP2000-260280 20000830; JPP2000-343094 20001110; JPP2001-226606 20010726
- 主分类号： C04B35596
- IPC分类号： C04B35596
摘要：
Wear resistant member for electronic equipment comprises a silicon nitride sintered body that contains conductivity enhancing particles, and has electrical resistivity in the range from 1 to 105 &OHgr;·m. In silicon nitride sintered body, agglomeration of conductivity enhancing particles in which distance between conductivity enhancing particles is less than 1 &mgr;m exists by 30% or less by area ratio per unit area. Wear resistant member is used for a bearing ball or the like, being applied in a rotation actuator of electronic equipment such as a magnetic recorder and optical disk drive. Malfunction of electronic equipment due to static electricity may be cancelled due to electrical resistivity that silicon nitride sintered body has.