有机-无机杂化涂层制备及耐腐蚀性能研究  

PREPARATION AND CORROSION CHARACTERIZATION OF ORGANIC-INORGANIC HYBRID COATIGNS

作　　者：王秀华[1] 孙益民[1] 刘守华[1] 孙红霞[1] 沈业青[1] 

机构地区：[1]安徽师范大学化学与材料科学技术学院安徽省功能性分子固体重点实验室,芜湖241000

出　　处：《腐蚀科学与防护技术》2006年第4期292-294,共3页Corrosion Science and Protection Technology

摘　　要：采用溶胶-凝胶法,以甲基三乙氧基硅烷(MTEOS)和正硅酸乙酯(TEOS)为原料,用浸渍-提拉法,在LY12铝合金基体表面成功制备了有机-无机杂化涂层.涂层表面光滑、平整、致密、无裂纹.通过液态浸渍实验、盐雾腐蚀实验和电化学腐蚀实验研究了有机-无机杂化涂层的耐腐蚀性能.结果表明,有机-无机杂化涂层耐腐蚀性能优良,具有很大的应用前景,使此杂化膜替代对环境有害的铬酸盐转化膜成为可能.Organic-inorganic hybrid coatings are prepared by sol-gel process, using methyltriethoxy silane （MTEOS） and tetraethoxy silane （TEOS） precursors. The as-prepared hybrid coatings were dense, uniform and defect-free. The corrosion resistance of the hybrid coatings applied on aluminum alloys is particular tested. The coatings show excellent corrosion resistant properties. So the new hybrid chromate-free coating systems can provide long-term and environmental friendly corrosion protection, in the contrast, the traditional chromate-based conversion coatings are toxic and suspicious of carcinogenic danger.

关 键 词：有机-无机杂化 涂层 耐腐蚀性能 

分 类 号：O64[理学—物理化学] TG174[理学—化学]