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1 金属材料强度高、塑性好、耐磨损,具有高导电性和导热性,并且具有良好的工艺性能,在现代社会的各个方面都得到了广泛的应用。金属结构正是利用了各种金属材料的特性而满足了各种环境、各种用途等方面的特定要求。金属构件有一定的寿命。随着时间的增长,金属结构受到各个方面不同程度的损杯,其破坏形式很多,腐蚀是最重要的破坏形式之一。因为金属在国民经济建设的各个领域的广泛应用,使得金属腐蚀带来了一系列问题,造成巨大的经济损失、灾难事故,耗费宝贵资源和能源,污染环境,具有很大的危害性。据发达国家调查,金属腐蚀所带来的经济损失约占当年国民经济生产总值的3.5%左右。我国尚未进行过全国性的腐蚀损失调
Metal materials with high strength, good plasticity, wear resistance, high electrical conductivity and thermal conductivity, and has good process performance in all aspects of modern society have been widely used. Metal structure is the use of a variety of metal materials to meet the characteristics of a variety of environments, a variety of uses and other aspects of the specific requirements. Metal components have a certain life expectancy. With the growth of time, the metal structure is damaged by various degrees in various aspects, and its destruction is in many forms. Corrosion is one of the most important forms of destruction. Because of the wide application of metal in various fields of national economic construction, metal corrosion has brought a series of problems, causing great economic losses, disaster accidents, consuming precious resources and energy and polluting the environment, which is very harmful. According to the survey conducted by developed countries, the economic loss caused by metal corrosion accounts for about 3.5% of the national GDP in that year. China has not conducted a national corrosion loss adjustment