US 12,000,051 B2
Sliding member, method for manufacturing same, and method for manufacturing hard material
Soushi Imaoka, Inuyama (JP); Manae Mori, Inuyama (JP); and Yuma Haneda, Inuyama (JP)
Assigned to DAIDO METAL COMPANY LTD., Aichi (JP)
Appl. No. 17/905,067
Filed by DAIDO METAL COMPANY LTD., Nagoya (JP)
PCT Filed Mar. 9, 2021, PCT No. PCT/JP2021/009102
§ 371(c)(1), (2) Date Aug. 26, 2022,
PCT Pub. No. WO2021/182423, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 2020-040947 (JP), filed on Mar. 10, 2020.
Prior Publication US 2023/0111221 A1, Apr. 13, 2023
Int. Cl. C23C 2/26 (2006.01); C23C 18/08 (2006.01)
CPC C23C 2/265 (2013.01) [C23C 18/08 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A sliding member comprising a base material layer and a surface layer,
wherein the surface layer includes a metal matrix and a hard material harder than the matrix and dispersed in the matrix, the hard material has a continuous gradient in hardness with the gradient in hardness gradually decreasing from an inner side to a surface of the hard material.