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）、双-[γ-（三乙氧基硅）丙基]四硫化分别采用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。
In order to see about anti-corrosion of silanization pretreatment on aluminium alloys surface, YL12 Al aloys surface were treated with γ- glycidoxypropyltrimentoxysilane(GPTMS),bis- [triethoxysilylpropyl] tetrasulfide(BTSPS) and bis-1,2-(triethoxysilyl) - ethane (BTSE)by dip-coating process. GPTMS and bis - silane films layer were cured at 100 ℃ for 60min and 130℃ for 60min respectively. Corrosion resistance of various silane silanization films layer were tested with potentiodynamic scan (PDS) and electrochemical impedance spectroscopy (EIS)in 3.5mass% NaCl solution and compared with that of chromated conversion coatings. The results show that the corrosion resistance of bis - silanization film layer exceeded that of organofunctional silane, the antiresistance of BTSPS silanization film layer exceeded that of all others.
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