铜合金表面溶胶凝胶涂层抗腐蚀性能的研究  

Study on Anti-Corrosion Performance of Thin Sol-Gel-Derived Films on the Surface of Copper Alloy

作　　者：俞冰[1] 梁开明[1] 顾守仁[1] 马晓明[1] 

机构地区：[1]清华大学材料科学与工程系,北京100084

出　　处：《材料保护》2001年第12期12-13,共2页Materials Protection

摘　　要：采用溶胶 凝胶技术 ,以正硅酸乙酯为基本原料 ,配制二氧化硅溶胶 凝胶液 ,采用浸涂法在牙科用铜合金表面涂层。用SEM、DTA、ICP等方法对二氧化硅溶胶 凝胶涂层的形貌及特性进行了研究与分析。结果表明 ,该涂层在乳酸腐蚀液中能减少合金离子的释放 ,提高了铜合金的抗腐蚀性能 ,铜合金与涂层的结合中强度可达 4The sol-gel dipping process, in which liquid silicon alkoxide is transformed into a solid silicon-oxygen network, can produce a thin film coating of 5i02. The surface Teatures of the 5i02-thin film were studied by methods of SEM, DTA and ICP etc. The results showed that the film could prevent the metal ions releasing from the surface of the alloy and improve the anti-corrosion property of the copper alloy. The honding strength between thin film and the alloy could reach 40 MPa tested by a tensile test.

关 键 词：溶胶-凝胶 二氧化硅涂层 抗腐蚀 性能 铜合金 表面处理 

分 类 号：TG174.45[金属学及工艺—金属表面处理]