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1. (WO2018179708) SLIDING MEMBER AND PISTON RING

Pub. No.:    WO/2018/179708    International Application No.:    PCT/JP2018/001768
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Tue Jan 23 00:59:59 CET 2018
IPC: F02F 5/00
C23C 14/06
F16J 9/26
Applicants: KABUSHIKI KAISHA RIKEN
株式会社リケン
Inventors: SHINOHARA Akio
篠原 章郎
Title: SLIDING MEMBER AND PISTON RING
Abstract:
The present disclosure relates to a sliding member. This sliding member includes a base material and an amorphous hard carbon film formed on a surface of the base material, the amorphous hard carbon film having a graded composition wherein the sp2 ratio increases progressively from the inner surface side thereof, that is, the base material side, to the outer surface side. The present disclosure also relates to a piston ring comprising the sliding member.