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http://dx.doi.org/10.9725/kstle.2011.27.5.264

Friction Characteristics of CNx Coated Dimple Pattern with Hexagonal Array  

Choi, Won-Sik (Dept. of Bio Industrial Mechanical Engineering, Pusan National University)
Umehara, Noritsugu (Dept. of Mechanical Science and Engineering, Nagoya University)
Publication Information
Tribology and Lubricants / v.27, no.5, 2011 , pp. 264-268 More about this Journal
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.
Keywords
friction; dimple pattern; carbon nitiride; surface texturing;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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