| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a piston ring for an internal combustion engine capable of preventing aluminum cohesion for a long time under high temperature and high load conditions.SOLUTION: A piston ring 1 for an internal combustion engine includes a piston ring base material 11 coated with an aluminum cohesion resistant film 12. The aluminum cohesion resistant film 12 is made of ceramics applied onto at least one of upper and lower side faces 11a and 11b of the piston ring base material 11.</p> |
