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金属腐蚀的现象与机理比较复杂,按腐蚀环境分类,可分为大气腐蚀、海水腐蚀、土壤腐蚀和化学介质腐蚀等;根据腐蚀的机理和特点分为物理腐蚀、化学腐蚀和电化学腐蚀。 电化学腐蚀是最普遍、最常见的腐蚀。在腐蚀发生的过程中有电流产生,金属腐蚀反应有一个阳极反应和一个阴极反应;阳极反应是金属离子从金属转移到溶液中放出电子的过程,阴极反应
The phenomenon and mechanism of metal corrosion are complicated. According to the classification of corrosion environment, it can be divided into atmospheric corrosion, seawater corrosion, soil corrosion and chemical medium corrosion. According to the mechanism and characteristics of corrosion, it is divided into physical corrosion, chemical corrosion and electrochemical corrosion. Electrochemical corrosion is the most common and most common form of corrosion. In the process of corrosion occurred in the current, metal corrosion reaction has an anode reaction and a cathode reaction; anode reaction is the transfer of metal ions from the metal solution to the process of the release of electrons, the cathode reaction