Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on Friction Behavior of Textured Surface in Unlubricated State

무윤활 상태에서 미세공이 가공된 표면의 마찰거동에 관한 연구

  • Oh, Seok-Ju (School of Mechanical, Aerospace & Systems Engineering, KAIST) ;
  • Kim, Sung-Gi (School of Mechanical, Aerospace & Systems Engineering, KAIST) ;
  • Kim, Kyung-Woong (Doosan Infracore Co., Ltd)
  • 오석주 (한국과학기술원 기계항공시스템학부) ;
  • 김성기 (한국과학기술원 기계항공시스템학부) ;
  • 김경웅 (두산인프라코어(주))
  • Published : 2009.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

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 fiction 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.

Keywords

References

  1. N. P. Suh, M. Mosleh and P. S. Howard, 'Control of Friction', Wear, Vol. 175, pp. 195-202, 1994
  2. I. Etsion, 'State of the Art in Laser Surface Texturing', Journal of Tribology, Vol. 127, pp. 248, 2005 https://doi.org/10.1115/1.1828070
  3. I. Etsion, Y. Kilgerman and G Haψerin, 'BAnalytical and Experimental investigation of Laser-textured mechanical seal faces', Tribolory Transactions, Vol. 42, pp. 511-516, 1999 https://doi.org/10.1080/10402009908982248
  4. I. Etsion and G Halperin, 'A Laser Surface Textured Hydrostatic Mechanical Seal,' Tribolory Transactions, Vol. 45, pp. 430-434, 2002 https://doi.org/10.1080/10402000208982570
  5. G Ryk and Y. Kilgerman, 'Experimental Investigation of Laser Surfàce Texturing for Reciprocating Automotive Components,' Tribology Transactions, Vol. 45, pp. 444-449, 2002 https://doi.org/10.1080/10402000208982572
  6. M. Wakuda, et al., 'BEffect of Surface Texturing on Friction Reduction Between Ceramic and Steel Materials Under Lubricated Sliding Contact,' Wear, Vol. 254, pp. 356-363, 2003 https://doi.org/10.1016/S0043-1648(03)00004-8
  7. X. Wang and K. Kato, 'The Effect of Laser Texturing of SiC Surface on the Critical Load for the Transition of Water Lubrication Mode from Hydrodynamic To Mixed,' Tribology International, Vol. 36, pp. 189-197, 2003 https://doi.org/10.1016/S0301-679X(02)00145-7
  8. N. P. Suh and H. C. Sin, 'The Genesis of Friction,' Wear, Vol. 69, pp. 91-114, 1981 https://doi.org/10.1016/0043-1648(81)90315-X
  9. 이기현, '질화규소 세라믹스의 마찰 및 마모 거동에 관한 연구.' 한국과학기술원 박사학위논문, 1994