Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Friction Characteristics of CNx Coated Dimple Pattern with Hexagonal Array

CNx 코팅된 육각대열 딤플패턴의 마찰특성

  • Choi, Won-Sik (Dept. of Bio Industrial Mechanical Engineering, Pusan National University) ;
  • Umehara, Noritsugu (Dept. of Mechanical Science and Engineering, Nagoya University)
  • Received : 2011.06.01
  • Accepted : 2011.08.20
  • Published : 2011.10.31
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Abstract

In this study, we examined the friction characteristics of a dimple pattern on a carbon nitride coating. The study was conducted with a hexagonal array 40 ${\mu}m$ dimple pattern on a steel bearing containing a CNx coating. The area density of the dimple patterns were varied between 5% and 25%, the speed was varied from 0.06-0.26 m/s, and the load was varied between 20-100N. In general, we found that as the velocity increased, the friction coefficient increased. Furthermore, the friction coefficient was lowest at a load of 40N. The friction coefficient of the non-coated specimen was 0.025-0.15; on the other hand, the friction coefficient of the coated specimen was 0.002-0.02. Thus, we determined that the coated materials could reduce the friction coefficient by a factor of 7.5.

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References

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