| 发明名称 | Piston ring for internal combustion engine | ||
| 摘要 | An object of the present invention is 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. Specifically, a piston ring 1 for the internal combustion engine including a piston ring base material 11 coated with an aluminum cohesion resistant film 12, wherein the aluminum cohesion resistant film 12 is made of ceramics coated on at least one of an upper side face 11a and a lower side face 11b of the piston ring base material 11. | ||
| 申请公布号 | US9261191(B2) | 申请公布日期 | 2016.02.16 |
| 申请号 | US201414472305 | 申请日期 | 2014.08.28 |
| 申请人 | KABUSHIKI KAISHA RIKEN | 发明人 | Sasaki Hayato;Ono Takashi |
| 分类号 | F16J9/28;F16J9/12;C23C14/06;C23C16/30;C23C16/32;C23C16/34;C23C16/40;C23C24/08;C23C24/10;C23C30/00;F16J9/26 | 主分类号 | F16J9/28 |
| 代理机构 | Hauptman Ham, LLP | 代理人 | Hauptman Ham, LLP |
| 主权项 | 1. A piston ring for an internal combustion engine including a piston ring base material coated with an aluminum cohesion resistant film,wherein the aluminum cohesion resistant film consists of only ceramics coated on at least one of an upper side face or a lower side face of the piston ring base material, and Vickers hardness HV of the aluminum cohesion resistant film and an arithmetic average roughness Ra (μm) of a surface of the aluminum cohesion resistant film satisfy the following formula (A): Ra<−8.7×10−5HV+0.39 (A). | ||
| 地址 | Tokyo JP | ||