公开(公告)号：US20230313835A1

公开(公告)日：2023-10-05

申请号：US18122550

申请日：2023-03-16

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Takashi MORIKAWA ,  Masahiro NAKAI

IPC: F16C33/12 ,  F16C33/14 ,  B22D13/02 ,  B22D19/08

CPC classification number: F16C33/121 ,  F16C33/14 ,  B22D13/02 ,  B22D19/08 ,  F16C2204/18

Abstract: A sliding member includes a base material and an alloy layer that includes Cu as a main component and Bi and having a sliding surface formed on a side opposite to the base material. The alloy layer has a first region and a second region. The first region is set to a region taking up 30% of the thickness of the alloy layer which is from an interface in contact with the base material toward the sliding surface. The second region is set to a region taking up 10% of the thickness of the alloy layer which is from the sliding surface toward the base material. A larger number of Bi phases having larger cross-sectional areas are distributed in an arbitrary observation cross section as Bi phases included in the second region compared to Bi phases included in the first region.