Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Oil Retention Experiments and Evaluations for Electrochemically Etched Porous Stainless Steel Surface

전기화학적으로 에칭된 다공성 스테인리스 스틸 표면의 오일 보존 실험 및 성능 평가

  • Lee, Chan (Department of Mechanical Engineering, POSTECH) ;
  • Kim, Aeree (Department of Mechanical Engineering, POSTECH) ;
  • Kim, Joonwon (Department of Mechanical Engineering, POSTECH)
  • 이찬 (포항공과대학교 기계공학과) ;
  • 김애리 (포항공과대학교 기계공학과) ;
  • 김준원 (포항공과대학교 기계공학과)
  • Received : 2014.10.02
  • Accepted : 2014.11.05
  • Published : 2014.12.01
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Abstract

Oil retention experiments were conducted and the performance was characterized for electrochemically etched stainless steels. The 304 stainless steels were electrochemically etched in dilute Aqua Regia to form porous structures. The structures were also hierarchical, which provides very large area for oils to adhere. Also the structures had deep valleys, which act as reservoir and are able to resist against oil-detaching forces. Several commercial oils were dispensed to characterize oil retention properties via rotating disk experiment method. The results showed that the etched surfaces have superior oil retention performance in every conditions. Also the retention enhancement ratio went particularly higher as the environments became more severe. This surface modification technique could be applied to other steel products for pretreatments of various kinds of coatings.

Keywords

References

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