Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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A Study on the Friction and Wear Characteristics of Nitrogen Ions Coated SCM415 Steel

질소이온 코팅 SCM415강의 마찰.마모특성에 관한 연구

  • Lyu, Sung-Ki (School of Mechanical & Aerospace Eng., ReCAPT(CK-MEM R&D Cluster), Gyeongsang Nati. Univ.) ;
  • He, Hei-bo (Graduate School Gyeongsang National Univ.) ;
  • Son, Yu-Sun (Graduate School Gyeongsang National Univ.)
  • 류성기 (경상대학교 기계항공공학부, 항공기부품기술연구소(지식기반기계부품소재연구개발 클러스터사업단)) ;
  • 하위파 (경상대학교 대학원 기계설계학과) ;
  • 손유선 (경상대학교 대학원 기계설계학과)
  • Published : 2007.02.28
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Abstract

SCM415 alloy was implanted with nitrogen ions using plasma source ion implantation (PSII), at a dose range of $1{\times}10^{17}\;to\;6{\times}10^{17}N^{+}cm^{-2}$. Auger electron spectrometry (AES) was used to investigate the depth profile of the implanted layer. Friction and wear tests were carried out on a block-on-ring wear tester. Scanning electron microscopy (SEM) was used to observe the micro-morphology of the worn surface. The results revealed that after being implanted with nitrogen ions, the frictional coefficient of the surface layer decreased, and the wear resistance increased with the nitrogen dose. The tribological mechanism was mainly adhesive, and the adhesive wear tended to become weaker oxidative wear with the increase in the nitrogen dose. The effects were mainly attributed to the formation of a hard nitride precipitate and a supersaturated solid solution of nitrogen in the surface layer.

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References

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