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Inhibition of iron corrosion in 0.5 M sulphuric acid by metal cations

机译:金属阳离子对铁在0.5 M硫酸中的腐蚀抑制作用

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Corrosion inhibitors are widely used in acid solutions during pickling and descaling. Mostly organic compounds containing N, O, and S groups are employed as inhibitors. In this study, the inhibition performance of metal cations such as Zn2+, Mn2+ and Ce4+ ions in the concentration range 1-10 x 10(-3) M has been found out. The corrosion behaviour of iron in 0.5 M H2SO4 in the presence of metal cations is studied using polarization and impedance methods. It is found that the addition of these metal cations inhibits the corrosion markedly. The inhibition effect is in the following order Ce4+ Mn2+ > Zn2+. (c) 2005 Published by Elsevier B.V.
机译:腐蚀抑制剂在酸洗和除垢过程中广泛用于酸溶液中。通常将含有N,O和S基团的有机化合物用作抑制剂。在这项研究中,已发现浓度范围为1-10 x 10(-3)M的金属阳离子(如Zn2 +,Mn2 +和Ce4 +离子)的抑制性能。使用极化和阻抗方法研究了铁在存在金属阳离子的情况下在0.5 M H2SO4中的腐蚀行为。发现添加这些金属阳离子显着抑制了腐蚀。抑制效果按以下顺序排列:Ce4 + Mn2 +> Zn2 +。 (c)2005年由Elsevier B.V.

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