Development of hydrogen-free diamond-like carbon coating for piston rings

被引：21

作者：

Higuchi, Tsuyoshi ^{[1
]}

Mabuchi, Yutaka ^{[1
]}

Ichihara, Hiroki ^{[2
]}

Murata, Takashi ^{[3
]}

Moronuki, Masaki ^{[4
]}

机构：

[1] Material Engineering Department, Nissan Motor Co., Ltd., 5602 Okatsukoku, Atsugi, Kanagawa,243-0192, Japan

[2] Powertrain Advanced Engineering Department, Nissan Motor Co., Ltd., 560-2 Okatsukoku, Atsugi, Kanagawa,243-0192, Japan

[3] Engine and Transmission Engineering Department, Nissan Motor Co., Ltd., Renault-Nissan Technology, Business Centre India Private Limited - Ascendas IT Park, Mahindra World City SEZ, Plot No: TP2/1, Natham Sub Post Office Phase I and 2, Ground Floor, Chenga

[4] New Product Development Division, RIKEN CORPORATION, 1-37 Hokuto-cho, Kashiwazaki, Niigata,945-8555, Japan

来源：

Tribology Online | 2017年 / 12卷 / 03期

关键词：

Bond strength (materials) - Piston rings - Tribology - Engine pistons - Thickness measurement - Viscosity - Coatings - Adhesion - Diamonds - Gasoline;

D O I：

10.2474/trol.12.117

中图分类号：

学科分类号：

摘要：

The first piston ring application of a hydrogen-free diamond-like carbon (H-free DLC) coating to a mass-production gasoline engine reduces friction. It is found that the friction reduction effect between the cylinder bore and piston is 18%. When H-free DLC is applied to top ring, friction is over 10% reduced. The effect is larger than H-free DLC applied to oil rings. Because DLC as low friction coating is effective in a thin oil film and there are few oil at a large area near piston Top Dead Center (TDC). The friction reduction effect is enhanced when lower viscosity engine oil is used. In this study, the adhesion strength of H-free DLC coating on piston rings is also improved. It is shown that the relation between the adhesion strength and 2 coating parameters; i.e. providing substrate roughness and coating thickness. Adhesion strength is verified by test results using actual parts considered to piston ring environment by gasoline engine. Piston rings with low friction and high reliability are developed. Copyright © 2017 Japanese Society of Tribologists

引用

页码：117 / 122