采用浸涂工艺,用pH=4～5,体积分数＜3%的3种硅溶胶即γ-缩水甘油醚丙基三甲氧基硅烷(GPTMS)、双-(三乙氧基硅)乙烷(BTSE)和双-[γ-(三乙氧基硅)丙基]四硫化物(BTSPS)对YL12铝合金表面进行处理,GPTMS和双硅烷膜层分别采用100℃×60min和130℃×60min工艺固化,并用动电位(PDS)和电化学阻抗谱(EIS)测试了不同硅烷化膜层在3.5mass% NaCl溶液中的耐蚀性并与铬酸盐处理的耐蚀性进行了比较.结果表明,双功能硅烷化膜层的耐蚀性优于功能性硅烷化膜层的耐蚀性,BTSPS硅烷化膜层的耐蚀性最优.
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