• Title/Summary/Keyword: Acceleration Corrosion Tester

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Cavitation and Electrochemical Characteristics Using Hydrogen Overpotential Method for ALBC3 Alloy (ALBC3 합금의 수소과전압 현상을 이용한 캐비테이션과 전기화학적 특성)

  • Park, Jae-Cheul;Lee, Seung-Jun;Kim, Seong-Jong
    • Journal of the Korean institute of surface engineering
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    • v.44 no.6
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    • pp.277-283
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    • 2011
  • In this study, the cavitation test and electrochemical experiments were conducted for ALBC3(Cu-Al) alloy that has an excellent corrosion resistance and cavitation characteristic in sea water. Based on the ASTMG32 regulation, the cavitation test was performed with the cavitation and cavitation erosion tester using piezoelectric effect. The electrochemical characteristics are evaluated with potentiostatic experiments in activation polarization potential range. As a result, cavitation damage is increased proportionally to temperature and time at $30{\mu}m$ amplitude. It is appeared that acceleration period in weight loss presented over 6 hours under the cavitation environment in sea water. In addition, corrosion damages were observed at the potential range of -3.2~-1.4 V as the result of potensiostatic experiments during 12 hours in activation polarization potential range.