Piston ring and manufacturing method therefor
A piston ring having a hard carbon film formed on at least an external peripheral sliding surface of a piston ring base material, the hard carbon film having an sp2 component ratio within a range of 40% to 80% inclusive as measured by a TEM-EELS spectrum which combines electron energy loss spectrosc...
Saved in:
Main Authors | , |
---|---|
Format | Patent |
Language | English |
Published |
02.10.2018
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Be the first to leave a comment!