中国有色金属学报（英文版）
中國有色金屬學報（英文版）
중국유색금속학보（영문판）
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2013年
11期
3206-3214
,共9页
铝合金%气蚀%恒电位实验%海水
鋁閤金%氣蝕%恆電位實驗%海水
려합금%기식%항전위실험%해수
Al alloy%cavitation%potentiostatic experiment%seawater
研究铝合金5083-H116在海水中的气蚀损伤行为特征，以期提高合金的耐气蚀性能。通过在不同电位条件下进行的恒电位实验，确定抑制气蚀损伤的最优保护电位。实验在电位为-2.2~-1.4 V的范围内进行，这对应于铝合金5083-H116阴极极化曲线上的浓差极化和活化极化区域。对实验获得的电流密度-时间曲线进行研究，通过三维显微镜和扫描电子显微镜分析合金表面的损伤情况。结果表明，合金的最优保护电位为-1.9~-1.5 V，在此电位条件下，合金的气蚀损伤得到显著地减轻。
研究鋁閤金5083-H116在海水中的氣蝕損傷行為特徵，以期提高閤金的耐氣蝕性能。通過在不同電位條件下進行的恆電位實驗，確定抑製氣蝕損傷的最優保護電位。實驗在電位為-2.2~-1.4 V的範圍內進行，這對應于鋁閤金5083-H116陰極極化麯線上的濃差極化和活化極化區域。對實驗穫得的電流密度-時間麯線進行研究，通過三維顯微鏡和掃描電子顯微鏡分析閤金錶麵的損傷情況。結果錶明，閤金的最優保護電位為-1.9~-1.5 V，在此電位條件下，閤金的氣蝕損傷得到顯著地減輕。
연구려합금5083-H116재해수중적기식손상행위특정，이기제고합금적내기식성능。통과재불동전위조건하진행적항전위실험，학정억제기식손상적최우보호전위。실험재전위위-2.2~-1.4 V적범위내진행，저대응우려합금5083-H116음겁겁화곡선상적농차겁화화활화겁화구역。대실험획득적전류밀도-시간곡선진행연구，통과삼유현미경화소묘전자현미경분석합금표면적손상정황。결과표명，합금적최우보호전위위-1.9~-1.5 V，재차전위조건하，합금적기식손상득도현저지감경。
This study aims to characterize the cavitation damage behavior of aluminum alloys in seawater and thus to enhance its cavitation resistance. Potentiostatic experiments were performed under various potential conditions to determine the optimum protection potentials, at which cavitation damage was suppressed. A potential range was selected for the experiment from-2.2 to-1.4 V, which corresponded to the concentration and activation polarization regions on the cathodic polarization curve of the 5083-H116 alloy. After the experiments, the current density-time behavior was investigated, and the degree of surface damage was observed using three-dimensional microscopy and scanning electron microscopy (SEM). The optimum protection potential was determined to be in the range of-1.9 to-1.5 V under which the cavitation damage was reduced significantly.
