Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Surface and Photolytic Characteristics of Ni-TiO2 Composite Layer Electro-Plated from Non-Aqueous Electrolyte

비수용액 전해질에서 전기도금한 니켈-TiO2 복합 도금층의 표면 및 광분해 특성 연구

  • Jo, Il-Guk (School of Materials Science and Engineering, Pusan National University) ;
  • Ji, Chang-Wook (School of Materials Science and Engineering, Pusan National University) ;
  • Choi, Chul-Young (Division for Dongnam Area Technology Service, Korea Institude of Industrial Techology) ;
  • Kim, Young-Seok (Division for Dongnam Area Technology Service, Korea Institude of Industrial Techology) ;
  • Kim, Yang-Do (School of Materials Science and Engineering, Pusan National University)
  • 조일국 (부산대학교 재료공학부) ;
  • 지창욱 (부산대학교 재료공학부) ;
  • 최철영 (한국생산기술연구원 동남권기술지원본부 수송기계부품지원센터) ;
  • 김영석 (한국생산기술연구원 동남권기술지원본부 수송기계부품지원센터) ;
  • 김양도 (부산대학교 재료공학부)
  • Published : 2008.10.31
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Abstract

Composite plating is a method of co-deposition of plating layer with metallic and/or non-metallic particles to improve the plating layer properties such as high corrosion resistance and photolysis of organic compounds. The properties of nickel-ceramic composite plating are significantly depend on the surface characteristics of co-deposited particles as well as the quantity in electrolyte. In this study, Ni-$TiO_2$ composite coating layer was produced by electrodeposition technique from non-aqueous eletrolyte and its surface characteristics as well as photolytic properties were investigated. The amounts of immobilized $TiO_2$ particles increased with increasing the initial $TiO_2$ particles contents in the bath. Samples electroplated with the current density of $0.5\;A/dm^2$ showed the significantly improved homogeneous $TiO_2$ particles distribution. The corrosion resistance of Ni-$TiO_2$ composite coating layer also improved with increaing the amounts of $TiO_2$ particles. Etched sample showed about 10% increased photolytic rate of organic matter compare to that of the non-etched.

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