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[학술저널]

마그네슘 합금의 내식성 향상을 위한 수산화층 형성 방법

  • 학술저널

마그네슘 합금의 내식성 향상을 위한 수산화층 형성 방법

Rapid Fabrication of Magnesium Hydroxide Layer on Magnesium Alloy to Improve Corrosion Resistance

김주한(포항공과대학교) 박병락(포항공과대학교) 황운봉(포항공과대학교)

DOI : 10.7736/KSPE.2019.36.5.493

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A simple and rapid method of fabricating Mg(OH)2 layer by chemical immersion was developed to improve the corrosion resistance of the magnesium alloy AZ31. The fabricated surface was superhydrophobic with a self-assembled monolayer coating of silane. The surface characteristics were evaluated by Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS) and X-ray Photoelectron Spectroscopy (XPS). The average water contact angle and sliding angle were determined to be 160° and 7° respectively as a result of wettability test. Potentiodynamic polarization indicated that both Mg(OH)2 layer and the thin layer of air were effective in improving anti-corrosion. This method which is efficient with regard to time and cost would be useful for magnesium industries and its application

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