材料期刊网

本工作对比了各种防铜变色剂的防变色效果,结果表明,1-苯基-5-巯基四氮唑(PMTA)的防变色效果优于化学钝化、电解钝化、苯骈三氮唑(BTA)、羟基苯骈三氮唑(HBT)、2-巯基苯骈噻唑(MBT)。用PMTA处理铜的最佳条件为:PMTA1～1.2g/L,pH=5,20～40℃,4min。XPS和AES分析表明,PMTA在Cu_2O上形成配合物膜,膜中铜为+1价。PMTA分子中的N、S均参与配位。从膜的AES元素深度分布曲线的恒组成区求得的配合物膜组成(A.C.％)为:Cu 40.9,C 32.3,N 16.2,O 7.9,S 2.9。

The antitarnish effects of various antitarnish agents of copper have been compared in this paper.The results showed that the l-pheny1-5-mercaptotetrazole (PMTA) is a more excellent antitarnish agent than the Benzotriazole (BTA), Hydroxybenzoiri azole(HBT), 2-mercapto-benzothiazole (MBT).The optimum conditions of treating copper with PMTA are PMTA 1～1.2g/L, pH5, 20～40℃, 4min. The results of XPS and AES analyses showed that the coordination compound film of PMTA on copper surface was formed on Cu_2O, the valence state of copper in this film was+1.The N (1s) and S (2p) in PMTA molecule have been coordinated onto Cu_2O.The relative atomic percent contents (A.C.%) of the composition elements on the film were determined from the constant composition region of the depth profile curves as: Cu 40.9, C 32.3, N 16.2,O 7.9, S 2.9.