Mechanistic Studies of Atmospheric Corrosion Behavior of Al and Al-based Alloys in a Tropical Marine Environment
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2017年第3期
论文作者：崔中雨 GE Feng 李晓刚 ZHU Min XIAO Kui DONG Chaofang WANG Xin
文章页码：633 - 639
摘 要：Atmospheric corrosion behavior of pure Al 1050 A, 5A02 and 6A02 aluminum alloys exposed to a tropical marine environment for 4 years was investigated. Synergetic effect of Cl-deposition rate and time of wetness resulted in an abnormal increase in weight loss and a significant fluctuation in corrosion rate. Pitting corrosion occurred on the three metals. Pits on 5A02 alloy were easy to initiate and inclined to propagate laterally to form higher corrosion area and shallower corrosion pits, while pits on 6A02 alloy presented the opposite appearances. This was further confirmed by the cyclic polarization experiments.
崔中雨1，GE Feng1，李晓刚2，ZHU Min3，XIAO Kui2，DONG Chaofang2，WANG Xin1
1. Institute of Materials Science and Engineering, Ocean University of China2. Corrosion and Protection Center,University of Science and Technology Beijing3. Lab of Multi-phase Deposition and Erosion, Zhejiang Sci-Tech University
摘 要：Atmospheric corrosion behavior of pure Al 1050 A, 5A02 and 6A02 aluminum alloys exposed to a tropical marine environment for 4 years was investigated. Synergetic effect of Cl-deposition rate and time of wetness resulted in an abnormal increase in weight loss and a significant fluctuation in corrosion rate. Pitting corrosion occurred on the three metals. Pits on 5A02 alloy were easy to initiate and inclined to propagate laterally to form higher corrosion area and shallower corrosion pits, while pits on 6A02 alloy presented the opposite appearances. This was further confirmed by the cyclic polarization experiments.
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