Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)

Korean Tribology Society (한국트라이볼로지학회)
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The Study on the Wear-Corrosion Behavior of Ductile Cast Iron in the Acidic Environment

산성환경 중에서 구상흑연주철재의 마멸-부식거동에 관한 연구

  • Lim, Uh-Joh (School of Mechanical Engineering, Pukyong University) ;
  • Park, Dong-Gi (Department of Die & Mold Technology, Pusan Polytechnic College) ;
  • Yun, Byoung-Du (Graduate School, Pukyong University)
  • 임우조 (부경대학교 기계공학부) ;
  • 박동기 (부산디지털정보기능대학 컴퓨터응용금형과) ;
  • 윤병두 (부경대학교 기계공학과 대학원)
  • Published : 2002.05.16
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Abstract

This paper was studied on the wear-corrosion behavior of ductile cast iron in the acidic environment. In the dry atmosphere and variety of pH solution, wear-corrosion characteristics and friction coefficient of GCD 60 with various sliding speed and distance were investigated. And electrochemical polarization test of GCD 60 was examined in the environment of various pH value. The main results are as following : In the dry atmosphere, boundary friction appears below nearly 5 $kg_{f}$ of contact load, and it is considered that solid friction occurs over nearly 5 $kg_{f}$ of contact load. As pH value becomes low, wear-corrosion loss in the aqueous solution increases. As the corrosion environment is acidified, corrosion potential of GCD 60 becomes noble, polarization resistance becomes low, and corrosion current density increases.

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