公开(公告)号：US11635120B2

公开(公告)日：2023-04-25

申请号：US16492850

申请日：2018-03-14

Applicant: Sunstar Engineering Inc.

Inventor： Hoshiaki Terao ,  Raita Wada ,  Tsuyoshi Nakatsuji ,  Yoshinori Shinagawa

IPC: C09K3/14 ,  F16D69/02 ,  C22C19/03 ,  F16D65/092

Abstract: A sintered friction material for brake having a high friction coefficient, with which reduction of the friction coefficient is prevented at high temperature and stable brake performance is maintained. It comprises: a metal matrix of Ni or Ni+Fe (small amount); a solid lubricant (a); and a friction adjusting material (b) including: metal or alloy particles (b1) having an average particle size of 50 μm or more and containing at least one selected from W, Mo, Cr, and FeW; and inorganic particles (b2) containing at least one selected from oxides, nitrides, carbides, and intermetallic compounds. An average particle size db1 of b1 and an average particle size db2 of b2 satisfy db1