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一、前言金属镀层的应用已经遍及各个生产和科研领域,大都是为了防止金属制品及组合件的腐蚀。已经知道,金属的腐蚀共有50多种类型,造成的经济损失是相当惊人的。美国国家标准局(NBS)和著名的布特尔——哥伦布实验室联合调查的结果表明,美国1975年因腐蚀造成的损失达700亿美元,占国民经济总产值的4.2％,比水灾、风灾、地震等自然灾害造成损失的总和还要多。因此,合理的选择金属镀层以防止金属制品或结构
First, the foreword The application of metal coating has been in various production and research areas, mostly in order to prevent the corrosion of metal products and components. It is already known that there are more than 50 types of metal corrosion, the economic losses caused is quite alarming. The results of a joint survey conducted by the U.S. National Bureau of Standards (NBS) and the famous Butler-Columbus Laboratory show that the U.S. suffered a loss of 70 billion U.S. dollars due to corrosion in 1975, accounting for 4.2% of the national economy’s GDP, , Earthquakes and other natural disasters caused by the sum of the losses even more. Therefore, a reasonable choice of metal plating to prevent the metal products or structures