Synergistic effect on corrosion inhibition of copper by sodium dodecylbenzenesulphonate (SDBS) and 2-mercaptobenzoxazole
作者： H. Tavakoli , T. Shahrabi , M.G. Hosseini
DOI: 10.1016/J.MATCHEMPHYS.2007.11.018
关键词:
摘要: The inhibition effects of sodium dodecylbenzenesulphonate (SDBS) and 2-mercaptobenzoxazole (2-MBO) on corrosion copper in sulphuric acid solution have been studied using electrochemical impedance spectroscopy (EIS) Tafel polarization measurements. For 2-MBO, a monotonous increase efficiency was observed as function concentration. SDBS, however, an optimum the for certain concentration, which is ascribed to formation hemi-micellar aggregates that provoke inhibitor desorption from metal/solution interface at higher concentrations. Upon mixing 2-MBO SDBS inhibitors, concentrations range showing synergistic behaviour were identified, it concluded electrostatic interactions between adsorbed ions. Different adsorption isotherms tested describing both SDBS.
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