【摘要】 铝合金表面在大气中、水中马上生成氧化膜,氧化膜的存在严重影响镀层的结合力,成为铝合金镀膜的难点。通过铝合金镀膜原理分析和现有工艺方法的对比,认为采取二次浸锌、化学镀、电镀复合工艺技术可以克服氧化膜的影响,是较为简单的工艺路线。实验证明,采用该方法获得的镀膜层通过300℃热震试验不起皮、不鼓泡,并具有良好的低温可焊性。更多还原

【Abstract】 Because of oxidizing in the air or water immediately,and the oxidation can damage the adhesion of the coating,so it is difficult to plate on the surface of aluminium alloy.By analyzing the principle of plating and comparing the technologies in existence,think that a sample process which consists of twi-dipping in zincate,chemical plating and electroplating can overcome the effect of oxidation film.It proves by the experiment that the coating obtained by this process can meet the testing of temperature shock at 300 ℃and possess nice performance of soldering at low temperature.更多还原