摘要
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.
In order to see about anti - corrosion of silanization pretreatment on aluminium alloys surface, YL12 Al - alloys surface were treated with γ -glycidoxypropyltrimentoxysilane（ GPTMS）, bis - [ triethoxysilylpropyl ] tetrasulfide （BTSPS） and his - 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.
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2007年第3期172-175,180,共5页
Journal of Chinese Society For Corrosion and Protection
基金
陕西省教育厅专项基金(05JK306)
关键词
硅烷化预处理
耐蚀性
双硅烷
功能性硅烷
silanization pretreatment, corrosion resistance, bis - silane, organofunctional silane
