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随着汽车工业的发展,在汽车上采用铝合金的零件越来越多。目前,大多数厂家使用的铝合金零件都未经防蚀处理,因而防蚀能力很低,盐雾试验不到一周就出现腐蚀,甚至有一些零件还没出厂就已经腐蚀了。所以,提高铝合金零件的防蚀能力是个急待解决的问题。汽车上用的铝合金牌号一般均为ZL16(铸铝),硅含量为9～11％,是所有铝合金中含硅量较高的牌号之一。这些铝合金零件的形状都较复杂,一般均为压铸成形,故油
With the development of the automobile industry, more and more parts are used in automobiles for aluminum alloys. At present, most manufacturers use aluminum parts are not anti-corrosion treatment, and thus anti-corrosion ability is very low, salt spray test less than a week on the corrosion, and even some parts have not been factory has been corroded. Therefore, to improve the corrosion resistance of aluminum alloy parts is an urgent problem to be solved. Automotive aluminum alloy grades are generally ZL16 (cast aluminum), silicon content of 9 to 11%, is all of the high silicon content of aluminum alloy one of the grades. The shape of these aluminum alloy parts are more complex, are generally die-casting forming, so oil