AA5052铝合金表面化学镀锡及其耐蚀性
Electroless Tin Plating on AA5052 Aluminum Alloy and Its Corrosion Resistance
摘 要
通过化学浸镀法在AA5052铝合金表面制备了镀锡层，采用扫描电子显微镜（SEM）、能谱仪（EDS），X射线衍射（XRD）等研究了镀液中锡酸钠含量和镀液pH对镀层形貌和结构的影响，采用浸泡法和电化学方法研究了镀层对铝合金耐蚀性的影响。结果表明：在碱性条件下，可以通过化学浸镀法在铝合金表面镀锡，且当镀液的pH为11.6，锡酸钠质量浓度为40 g/L时，得到了均匀、致密的金属锡镀层，镀层的存在能明显提高铝合金在氯化钠溶液中的耐蚀性。
铝合金
耐蚀性
海水
electroless tin plating
aluminum alloy
corrosion resistance
seawater
Abstract
A tin plating layer was prepared on the surface of AA5052 aluminum alloy by chemical immersion plating. The effects of sodium stannate content and plating solution pH on the morphology and structure of the coating were investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The effects of coating on the corrosion resistance of aluminum alloy were studied by immersion method and electrochemical method. The results showed that under alkaline conditions, tin could be plated on the surface of the aluminum alloy by chemical immersion plating. When the pH of the plating solution was 11.6 and the mass concentration of sodium stannate was 40 g/L, a uniform and dense metal tin plating layer was obtained. The presence of the coating significantly improved the corrosion resistance of the aluminum alloy in sodium chloride solution.
中图分类号 TG174 DOI 10.11973/fsyfh-201811012
所属栏目 应用技术
基金项目
收稿日期 2017/4/29
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引用该论文: ZHANG Lijun,YANG Wenzhong. Electroless Tin Plating on AA5052 Aluminum Alloy and Its Corrosion Resistance[J]. Corrosion & Protection, 2018, 39(11): 873
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参考文献
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