Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Characterization of the Morphology and Corrosion Resistance in Electroless Ni-P-TiO2 Composite Coating Prepared by TiO2 Contents

TiO2 함량에 따르는 무전해 Ni-P-TiO2 복합도금층 특성 연구

  • Byoun, Young-Min (Metal& Machinery Team, Korea Conformity Laboratories (KCL)) ;
  • Kim, Ho-Young (Metal& Machinery Team, Korea Conformity Laboratories (KCL)) ;
  • lee, Jae-Woong (Dept. of Metal.Material Process Engineering, College of Engineering, Inha University) ;
  • Hwang, Hwan-il (KOREA POLYTECHNICS)
  • 변영민 (한국건설생활환경시험연구원) ;
  • 김호영 (한국건설생활환경시험연구원) ;
  • 이재웅 (인하대학교 금속재료공정공학과) ;
  • 황환일 (한국폴리텍대학)
  • Received : 2019.06.24
  • Accepted : 2019.08.29
  • Published : 2019.08.30
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Abstract

Electroless Ni-P coatings are widely used in the chemical, mechanical, and electronic industries because of their excellent wear and abrasion resistance. In this study, the effect of $TiO_2$ particles of composite coating was investigated. To improve the corrosion resistance, electroless $Ni-P-TiO_2$composite coating was studied by varying the $TiO_2$ content. The morphology and phase structure of $Ni-P-TiO_2$ composite coatings were analyzed by scanning electron microscopy(SEM), X-ray diffractometry(XRD) and X-ray photoelectron spectroscopy(XPS). The result showed that $Ni-P-TiO_2$composite coating is composed of Ni, P, Ti and O. It exhibits an amorphous structure, high hardness and good corrosion resistance to the substrate. $Ni-P-TiO_2$ composite coatings have higher open circuit potential than that of the substrate, which obtained at $TiO_2$ content of 5.0 g/L optimal integrated properties.

Keywords

References

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