Protective effect of poly(4-Vinylpyridine) containing surface films to the corrosion of copper

Journal of the Brazilian Chemical Society

Cristiano Giacomelli²  Fernando Carlos Giacomelli²  Vanessa Schmidt¹  Adriana Lídia Santana¹  Alfredo Tiburcio Nunes Pires¹  José Roberto Bertolino¹  Almir Spinelli² 

[1] ,Universidade Federal de Santa Catarina Departamento de Química Grupo de Estudos de Processos Eletroquímicos e EletroanalíticosFlorianópolis SC ,Brazil

关键词: poly(4-vinylpyridine);    corrosion;    copper;   

DOI  :  10.1590/S0103-50532005000100002

来源: SciELO

【 摘 要 】

We report here on the ability of poly(4-vinylpyridine) (P4VP) films to improve the copper corrosion properties in 0.1 mol L-1 H2SO4. Films formed by Cu(P4VP)2(SCN)2 macromecular-complex were electrochemically or spontaneously (by immersion) grown onto copper surfaces in 3% acetic acid, 0.1 mol L-1 KSCN and P4VP containing solutions. Imaging and electrochemical techniques were employed to characterize the film morphology and evaluate its effect on the copper corrosion, respectively. A substantial increase in corrosion resistance of copper samples spontaneously coated by P4VP films was found in comparison to the uncoated ones. The optimum conditions for spontaneous growth comprise a 3 - 4 h immersion period in a 0.1 mol L-1 P4VP containing solution. Inhibition efficiencies (IE) of 94 - 98% were recorded by employing this methodology. For electrochemically grown P4VP films, the IE was 70 - 85%.

【 授权许可】

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