研究了硝酸铈掺杂双-[r-(三乙氧基硅)丙基]四硫化物(BTESPT)硅烷溶液处理热镀铝锌基体的结构、表面形貌和性能.结果表明,硝酸铈掺杂硅烷溶液与铝锌基体表面发生了化学键合作用,形成Si-O-Al与Si-O-Zn成膜,钝化膜中的主要有机基团与掺杂前没有显著的差别.与铬酸盐膜和未掺杂硅烷的膜相比,硝酸铈掺杂硅烷溶液明显提高了钝化膜的耐蚀性.铈盐掺杂硅烷膜均匀、致密,无明显微裂纹.硅烷膜的主要成分有C、O、Si,S、Al、Zn、Ce,进一步说明Ce3+没有与基体或硅烷中的有机基团反应,只是以物理填充的形式沉积在基体上.
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