原子力显微镜研究苯并三氮唑对铜的缓蚀作用

铜以及铜合金由于其优良的抗腐蚀性能,广泛用在冷却水系统中,苯并三氮唑(BTA)常常作为铜的缓蚀剂。将传统电化学方法和原子力显微镜(AFM)测试技术相结合,对人造海水中BTA作用于铜电极的缓蚀行为进行了研究。结果表明,BTA能够有效减缓铜在海水中的腐蚀,且随着缓蚀剂浓度的增加,缓蚀效果越明显,100 mg/L的BTA就能够高效的保护铜。电化学结果表明,BTA能够在铜的表面形成致密的保护膜CuBTA]n;AFM测试表明,随着时间的进行,保护膜越来越致密,保护性能也越好。

The inhibition effect of benzotriazole on copper by AFM method

Copper and its alloys are widely used in industries because of their good resistance to corrosion and are often used in cooling water systems,benzotriazole(BTA) is a useful inhibitor to copper.The inhibitive effect of benzotriazole(BTA) for copper in artificial sea-water was studied by traditional electrochemistry measurement and atomic force microscopic(AFM).The results show inhibition effiencey(IE) increases with the concentration of BTA,100 mg/L BTA can protect effectively copper.Electrochemistry measurement show BTA and copper can form n film on the surface;AFM analysis show the film become compact with the time going and have good protection.