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Correlation between crystalline phase and corrosion resistance of Mg alloy with different PEO conditions. I. Crystalline phase

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2018, 28(2), pp.74-79
  • DOI : 10.6111/JKCGCT.2018.28.2.074
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : February 23, 2018
  • Accepted : March 22, 2018
  • Published : April 30, 2018

Bae-Yeon Kim 1 Yongnam Kim 2 Minseok Jeon 2 Jae-Ho Ham 3

1인천대학교
2한국산업기술시험원
3MST Technology

Accredited

ABSTRACT

To increase corrosion resistance of Mg alloy, AZ31 and AZ91 were PEO treated with different applied voltage and time conditions. We used Na-P and Na-Si system electrolyte. Crystalline phase and morphology were investigated. MgO was Most common crystal phase and vitreous phase could be found. Crystalline phase of Na 3.59 Mg 2.71 (PO 4 ) 3 and Mg 2 SiO 4 also could be found. Porosity of oxidized surface tends to decrease with increasing PEO applied voltage, treat time and concentration of electrolyte, after then, size of pore increased and total number of pore decreased, distinctly.

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