ABNORMAL CORROSION BEHAVIOR OF AI-Mg AND Al-Mn ALLOY IN SEAWATER
实海暴露防锈铝合金局部腐蚀敏感性研究

Abnormal corrosion behavior of Al\|Mg and Al\|Mn alloys exposed to various sea areas has been studied by SEM, AES and electrochemical measuring techniques. The main affecting factors related to the abnormal corrosion behaviors, including those of environment and materials, were investigated. The results showed that the change of corrosion behaviors was related to the corrosion potential shift, which was affected by the parameters of the carbon dioxide\|carbonate system. The effect of the microstructure , inclusions and surface condition of the alloys on corrosion behavior was also investigated.