摘要
通过光学显微观察、扫描电镜观察和能谱成分分析,研究了有镀覆层的微波组件铝壳体腐蚀行为。在产品生产装配过程中,水和汗液等多余物渗透铝壳体镀覆层到达本体与铝产生化学反应。能谱成分和机理分析表明,铝腐蚀产物主要为氧化铝,其体积膨胀数倍造成镀覆层开裂或剥落,在高温高湿环境中腐蚀现象会加剧。试验表明,通过对微波组件铝壳体本体磁针抛光处理并对铝壳体镀覆层表面预浸镀层保护剂可以极大地改善镀层抗变色性及耐腐蚀性,从而对微波组件铝壳体起到很好的腐蚀防护作用。
The corrosion behavior of Al microwave module with electroplating finish was investigated by optical microscopy, SEM microscopy（scanning electronic machine） and EDS（energy dispersive spectrum）. In assembling process, water, sweat residual and so on penetrated through plating finish contacting directly with Al alloy and reacted with it. EDS and mechanism manifested that the main reacting corrosion products of Al alloy was Al2O3, whose volume was several times larger than that of Al, causing plating finish peeling off, and the spalling phenomenon of plating finish was worsen under high temperature and humidity. The experiments showed that polishing microwave module of Al shell with magnetic needle and pre-dipping protective agent on the surface of plating finish could improve the ability of discolor and anti-corrosion, which had great effect on corrosion prevention of Al microwave module.
作者
田飞飞
葛培虎
张韧
陈以钢
崔洪波
张耀平
裔瑞祥
TIAN Feifei GE Peihu ZHANG Ren CHEN Yigang CUI Hongbo ZHANG Yaoping Yi Runxiang(Nanjing Electronic Devices Institute, Nanjing 210016, China)
出处
《电子工艺技术》
2017年第2期96-98,113,共4页
Electronics Process Technology
关键词
微波组件
铝壳体
腐蚀
防护
microwave module
aluminum shell
corrosion
anti-corrosion
