Effect of sodium dodecylsulfate and benzotriazole on the interfacial behavior of Cu/Cu(II), H2SO4

Villamil, R.F.V; Cordeiro, G.G.O.; Matos, Jaqueline Borges; D’Elia, Eliane; Agostinho, Sílvia Maria Leite

doi:10.1016/s0254-0584(02)00347-4

Cited by 45 publications

(17 citation statements)

References 17 publications

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“…The P4VP effect on the corrosion of copper was, however, pointed out in the Nyquist diagrams shown in Figure 3B. From the Nyquist diagram of a freshly polished electrode, one capacitive loop at the higher frequency range followed by the Warburg impedance at lower frequency values was perceived, in agreement with Villamil et al 17 On the other hand, basically one depressed semicircle was observed for electrodes submitted to cycling. Here, our interest was focused on the charge transfer resistance (R ct ) variation depending on the experimental conditions in which the film was obtained.…”

supporting

confidence: 85%

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

Giacomelli¹,

Giacomelli²,

Schmidt³

et al. 2005

J. Braz. Chem. Soc.

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Neste trabalho investigou-se a capacidade de filmes de poli(4-vinilpiridina) (P4VP) em melhorar as propriedades de corrosão do cobre em H 2 SO 4 0,1 mol L -1 . Filmes que formam o complexo macromolecular Cu(P4VP) 2 (SCN) 2 foram obtidos por métodos eletroquímicos ou espontaneamente (por imersão) em soluções contendo 3% de ácido acético, KSCN 0,1 mol L -1 e P4VP. As características morfológicas dos filmes e o seu efeito sobre a corrosão do cobre foram analisados por técnicas de microscopia e eletroquímicas, respectivamente. Um aumento acentuado na resistência à corrosão de amostras de cobre recobertas por filmes de P4VP gerados espontaneamente foi observado em comparação às amostras não recobertas. A melhor condição para a obtenção destes filmes consiste na imersão do cobre em soluções contendo P4VP 0,1 mol L -1 durante 3 -4 h. Empregando-se esta metodologia, registraram-se eficiências de inibição (EI) de 94 -98%. Para filmes gerados eletroquimicamente, a EI foi de 70 -85%.We report here on the ability of poly(4-vinylpyridine) (P4VP) films to improve the copper corrosion properties in 0.1 mol L -1 H 2 SO 4 . Films formed by Cu(P4VP) 2 (SCN) 2 macromecularcomplex 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%. Keywords: poly(4-vinylpyridine), corrosion, copper IntroductionThe use of d-block metals to produce coordination complexes in polymer blends has been studied over the past few decades. 1 By physically mixing transition-metals cations and coordinating polymers, it has been possible to obtain materials with properties different from those of the individual bulk components. 2,3 Recently, the importance of developing macromolecular complexes was highlighted because of their optical, magnetic, electronic and solution properties. 4 For instance, the conducting and thermal properties of poly(4-vinylpyridine) (P4VP) are significantly changed when the polymer is complexed with copper ions. 5 The technological applications of the P4VP/ copper system include reactive blending, 6 catalyst, 7-9 cation exchange resins and membranes designed to preconcentrate metals from dilute solutions 10 or remove them from wastewater, 11 solid-state electrochemical cells, 12 circuit manufacturing on microscopic smoothly polymeric surfaces 13 and anti-corrosion methods. 14 Poly(4-vinylpyridine)/cupric salts complexes can be synthesized by physical mixing methods, and their therma...

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supporting

confidence: 85%

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

Giacomelli¹,

Giacomelli²,

Schmidt³

et al. 2005

J. Braz. Chem. Soc.

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“…This makes benzotriazole one of the most efficient inhibitors for the corrosion of copper and its alloys in aqueous media [13][14][15][16][17][18][19][20]. Generally, BTAH acts as an anodic corrosion inhibitor [21][22][23][24][25][26][27] via its physisorption [22,23] on the copper surface that follows, in most cases, Langmuir isotherm [21,22,25,[28][29][30]. However, it was shown in some other cases that BTAH can act as a mixed (i.e., anodic and cathodic) type inhibitor [23].…”

Section: Introductionmentioning

confidence: 99%

A review of the effects of benzotriazole on the corrosion of copper and copper alloys in clean and polluted environments

2009

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A continuing challenge in materials design is the achievement of high operational efficiency through improvements in performance criterion, particularly its service life-time characteristics. Benzotriazole (BTAH) has now been in use for many years for the protection of copper and copper alloys against various forms of corrosion. In this review, the chemistry of BTAH and theories regarding its mode of action are summarized. Also, a survey of the reported work in both clean and polluted environments is documented. More interestingly, the adverse effect of BTAH on the corrosion of Cu and Cu alloys in sulfide polluted environments is introduced.

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“…Abd-El-Rehim et al [8] have reported that the inhibition of corrosion of Al alloy in 1 M HCl in the temperature range 10-60º C occurs through the adsorption of the anionic surfactant SDS on the metal surface without modifying the mechanism of the corrosion process. The effect of SDS and Cu corrosion has been studied in the absence and presence of benzotriazole using electrochemical impedance and surface tension measurements [9,10]. Susai Rajendran et al [11] have evaluated the inhibition efficiency of SDS in controlling the corrosion of carbon steel immersed in 60 ppm of NaCl in the absence and presence of Zn 2+ .…”

Section: Introductionmentioning

confidence: 99%

Inhibition and Biocide Actions of Sodium Dodecyl Sulfate-Zn2+ System for the Corrosion of Carbon Steel in Chloride Solution

Antony¹,

Sherine²,

Rajendran³

2010

Port. Electrochim. Acta

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The inhibition efficiency of sodium dodecyl sulfate (SDS) in controlling corrosion of carbon steel in aqueous solution containing 120 ppm of Cl − in the presence and absence of Zn 2+ has been evaluated by weight loss method. The formulation consisting of 300 ppm of SDS and 75 ppm of Zn 2+ gives 93 % inhibition efficiency. A synergistic effect exists between SDS and Zn 2+ . As the immersion period increases, the inhibition efficiency of SDS-Zn 2+ decreases. Polarization study reveals that this formulation controls both the anodic and cathodic reactions. AC impedance spectra reveal that a protective film is formed on the metal surface.

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Effect of sodium dodecylsulfate and benzotriazole on the interfacial behavior of Cu/Cu(II), H2SO4

Cited by 45 publications

References 17 publications

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

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

A review of the effects of benzotriazole on the corrosion of copper and copper alloys in clean and polluted environments

Inhibition and Biocide Actions of Sodium Dodecyl Sulfate-Zn2+ System for the Corrosion of Carbon Steel in Chloride Solution

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