高强度表面TiO_2薄膜的耐腐蚀性研究  

Anti-Corrosion of Tio_2 Films on High in Tensity Copper Alloy

作　　者：徐文清[1] 翟启明[1] 谢春生[1] 林生岭[1] 王冀恒[1] 陈立力[1] 

机构地区：[1]江苏科技大学先进焊接技术省级重点实验室,江苏镇江212003

出　　处：《全面腐蚀控制》2007年第3期15-18,共4页Total Corrosion Control

摘　　要：利用溶胶-凝胶法在高强度CuAlBe合金上制备TiO2薄膜。采用静态挂片法、极化曲线法、交流阻抗法研究基材和涂层在不同介质中的腐蚀速率,用EDS分析腐蚀产物成分,并采用M352、ZSimpwin相关软件进行数据处理。研究结果表明:涂覆试样比基材在不同介质中的腐蚀速率小,并且试样在各介质中的腐蚀速率大小依次为:0.1mol/LH2SO4>人工海水>自来水。海水中腐蚀产物可能为MgCl2,CaCl2,CuCl2;不同介质中涂覆试样的腐蚀电流密度比基材低,且除600℃时有突然变小外,腐蚀电流密度随热处理温度升高而升高,并且涂层能有效抑制阳极腐蚀反应。TiO2 thin films were prepared by sol-gel method on high intensity CuAlBe alloy surface. The corrosion rate of CuAlBe and TiO2 coatings was studied by static weight loss method, polarization curve method and alternating-current impedance method. The resultants of corrosion in sea water were measured by EDS and the datas were analyzed by M352, ZSimpwin software relatived. The results showed that the corrosion rate of TiO2 coatings was slower than CuAlBe basal body＇ s, and the order from fast to slow was 0.1mol/L H2SO4, sea water and tap water. The corrosion productions in sea water maybe MgCl2, CaCl2, CuCl2. The corrosion current density with TiO2 coatings was lower than basal body＇ s in different solutions, and with increasing the temperature of heat treatment the corrosion current density was increasing except in 600℃ was decreased. Also impedance analysis showed that TiO2 coatings can well resist anode electrochemical reaction.

关 键 词：TIO2薄膜 CUALBE合金 耐蚀性 

分 类 号：TG178[金属学及工艺—金属表面处理]