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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 243 - 252 (10page)
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The pitting corrosion and inhibition studies of AZ31B magnesium alloy were investigated in the alkaline solution (pH12) with chloride and inhibitors. The corrosion behavior of passive film with/without Cl- in the alkaline electrolyte were conducted by polarization curve and immersion tests in the presence of various additives (inhibitors) to clarify the inhibition efficiency of pitting corrosion at higher potential region. Critical concentration of pitting corrosion for Mg alloy was evaluated with 0.005 M NaCl in 0.01 M NaOH on the anodic polarization behavior. Critical pitting of AZ31B Mg alloy in 0.01 M NaOH is a function of chlorides; Epit = - 1.36 – 0.2 log [Cl–]. When the Sodium Benzoate (SB) was only used as an inhibitor, a few metastable pits developed on the Mg surface by an immersion test despite no pitting corrosion on the polarization curve meaning that adsorption of SB on the surface is insufficient protection from pitting corrosion in the presence of chloride. The role of SB and Sodium Dodecylbenzenesulfonate (SDBS) inhibitors for the Mg alloy surface in the presence of chloride was suppressed from pitting corrosion to co-adsorb on the Mg alloy surface with strong formation of passive film preventing pitting corrosion.
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참고문헌 (32)
참고문헌 신청
최경수 / 2011 / 경량 마그네슘 합금(AZ31B)의 도금층 형성 연구 / 한국표면공학회지 44(6):239~245
E. F. Emley / 1966 / Principle of Magnesium Technology / Pergamon Press :30~31
G. L. Makar / 1993 / Int. Mater. Rev. 38:138
J. E. Gray / 2002 / J. Alloys Compd 336:88
W. S. Loose / 1946 / Corrosion and Protection of Magnesium / ASM Int., Materials Park :173
E. F. Emley / 1966 / Principle of Magnesium Technology / Pergamon Press :30~31
G. L. Makar / 1993 / Int. Mater. Rev. 38:138
J. E. Gray / 2002 / J. Alloys Compd 336:88
W. S. Loose / 1946 / Corrosion and Protection of Magnesium / ASM Int., Materials Park :173
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