Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Effect of Na2SiO3 concentration on PEO film formation of Al6061 alloy

Al6061 합금의 PEO 피막 형성에 미치는 Na2SiO3 농도의 영향

  • 이병건 ((주)영광와이케이엠씨 연구개발센터) ;
  • 한영욱 ((주)영광와이케이엠씨 연구개발센터) ;
  • 장기범 ((주)영광와이케이엠씨) ;
  • 조성열 ((주)영광와이케이엠씨 연구개발센터)
  • Received : 2024.04.16
  • Accepted : 2024.04.25
  • Published : 2024.04.30
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Abstract

In this study, we investigated the effect of Na2SiO3 concentration on the Plasma Electrolytic Oxidation(PEO) film formation of Al6061 alloy. The morphology of the PEO films were examined by Optical Microscope(OM) and Scanning Electron Microscope(SEM). PEO film thickness increases as the Na2SiO3 concentration increases. The elemental analysis of PEO films was conducted using Dispersive X-ray Spectrometer(EDS). The cross-sectional elemental analysis result shows that the Si concentration tends to increase as the concentration of Na2SiO3 increases. X-Ray Diffraction(XRD) analysis was performed to confirm the degree of phase change according to Na2SiO3 concentration. In addition, Vickers hardness was measured to confirm the mechanical strength of the PEO film. As the concentration of Na2SiO3 increases, the hardness value also tends to increase.

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