무윤활상태에서 미세공이 가공된 표면의 마찰거동에 관한 연구A Study on Friction Behavior of Textured Surface in Unlubricated State

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In this study, friction tests were carried out in order to investigate the friction behavior of textured surface in unlubricated state using ball-on-disk type apparatus. Test specimens were SUJ2 bearing steel ball and SM45C steel disk. Square arrays of circular micro-dimples were created on the surface of disk specimen by Nd:YAG Laser. Friction tests were performed for the disk specimen with various micro-dimple parameters and was also conducted for the variation of normal loads and relative velocities.The results showed that friction coefficient of textured surface was lower than that of non-textured surface and the deeper depth of micro-dimple was, the lower friction coefficient obtained at the same diameter of micro-dimple in unlubricated state. Area density of micro-dimple had an effect on the friction coefficient. It was also found that friction coefficient generally decreased with the increase of normal load and relative velocity.
Publisher
한국윤활학회
Issue Date
2009-08
Language
Korean
Citation

한국윤활학회지, v.25, no.4, pp.217 - 224

ISSN
1229-4845
URI
http://hdl.handle.net/10203/97313
Appears in Collection
ME-Journal Papers(저널논문)
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