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金属材料是现代最重要的工程材料,在工农业生产中占有极其重要的地位.在使用过程中,金属与周围环境介质之间发生化学和电化学作用而引起变质和破坏,即腐蚀。金属材料的腐蚀遍及国民经济及人民生活的各个领域,给国家带来了重大的经济损失。据统计,全球每年腐蚀经济损失约7000亿
Metal material is the most important engineering material in modern times, occupying an extremely important position in the industrial and agricultural production.In the process of using, the metal and the surrounding medium are chemically and electrochemically caused to degenerate and destroy, namely corrode. The corrosion of metal materials spreads in all fields of national economy and people's livelihood, bringing about major economic losses to the country. According to statistics, the global annual economic loss of about 700 billion corrosion