以十四烷基硫醇(TDT)和十四烷基膦酸(TDPA)为缓蚀分子,含水量不同的乙醇-水混合液作为溶剂,配制TDT,TDPA以及TDT/TDPA混合自组装液,并用浸泡法在2024铝合金表面制备得到自组装膜(SAMs).采用动电位扫描、电化学阻抗谱(EIS)技术、接触角测试、以及光电子能谱(XPS)研究了混合自组装膜在铝合金表面的吸附行为及缓蚀性能.结果表明,三种自组装膜对铝合金在Harrison溶液中的腐蚀都具有一定缓蚀作用,且缓蚀效果随着自组装溶液中含水量增加而增强,混合自组装膜的缓蚀性能比单一自组装膜进一步提高.
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