PREPARATION AND CORROSION CHARACTERIZATION OF ORGANIC-INORGANIC HYBRID COATIGNS
有机－无机杂化涂层制备及耐腐蚀性能研究

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.