대한금속재료학회지 (Korean Journal of Metals and Materials)

  • 제48권9호
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  • Pages.813-818
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  • 2010
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  • 1738-8228(pISSN)
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  • 2288-8241(eISSN)
대한금속재료학회 (The Korean Institute of Metals and Materials)
권호 표지
DOI QR코드

DOI QR Code

플라즈마 전해산화 처리된 마그네슘 합금의 내부식성에 미치는 코팅층 내 지르코니아 입자 영향

Influence of ZrO2 Particulates on Corrosion Resistance of Magnesium Alloy Coated by Plasma Electrolytic Oxidation

  • 남궁승 (한양대학교 금속재료공학과) ;
  • 고영건 (영남대학교 신소재공학부) ;
  • 신기룡 (한양대학교 금속재료공학과) ;
  • 신동혁 (한양대학교 금속재료공학과)
  • Namgung, Seung (Department of Metallurgy and Materials Engineering, Hanyang University) ;
  • Ko, Young Gun (School of Materials Science and Engineering, Yeungnam University) ;
  • Shin, Ki Ryong (Department of Metallurgy and Materials Engineering, Hanyang University) ;
  • Shin, Dong Hyuk (Department of Metallurgy and Materials Engineering, Hanyang University)
  • 투고 : 2010.03.15
  • 발행 : 2010.09.22
⟨ 이전 논문 다음 논문 ⟩

초록

In current automobile and electronic industries, the use of magnesium alloys where both energy and weight saving are attainable is increasing. Despite their light weight, there has been an inherent drawback arising from the surface vulnerable to be oxidized with ease, specifically under corrosive environments. To protect magnesium alloy from corrosion, the present work deals with the electrochemical response of the oxide layer on magnesium alloy specimen prepared by plasma electrolytic oxidation (PEO) method in an electrolyte with zirconia powder. Surface observation using scanning electron microscopy evidences that a number of zirconia particles are effectively incorporated into oxide layer. From the results of potentio-dynamic tests in 3.5 wt% NaCl solution, the PEO-treated sample containing zirconia particles shows better corrosion properties than that without zirconia, which is the result of zirconia incorporation into the coating layer. Corrosion resistance is also measured by utilizing salt spray tests for 120 hrs.

키워드

과제정보

연구 과제 주관 기관 : 한국연구재단, 차세대 소재 성형 기술개발사업단, 교육과학기술부

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