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THE EFFECT OF MAGNETIC FIELD AND FERRIC IONS ON CATHODIC POLARIZATION BEHAVIOR OF IRON IN 0.5mol/L H_2SO_4 SOLUTION |
Lu Zhanpeng;Chen Junming |
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Abstract Cathodic processes of iron in Fe2(SO4)3 and H2SO4+Fe2(SO4)3 solutions were studied in the presence of 0.4T(tesla)magnetic field at 20℃.It was found that Fe3+ reduction and H+ depolarization accelerated each other in the absence of magnetic field.Magnetic field accelerated the cathodic process of iron corrosion in Fe2(SO4)3 solution or in 0.5 mol/L H2SO4 solution but did not cnange the reaction mechanism.In 0.5 mol/L H2SO4+Fe2(SO4)3 solution a combined effect of magnetic field on Fe3+ reduction and H+ depolarization reaction was observed.The results were explained on the point of view that magnetic field changed the mass transfer process and the structure of electric double layer at the electrode-solution interface.
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Received: 25 February 1996
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1SrivastavaK;NigamN.Br.Corros.J,1988,23(3):1722GhabashyMA.Anti-Corrosion,1988,35(1):123GatosHC.J.Electrochem.Soc,1956,103(5):2864王晨,陈俊明·中国腐蚀与防护学报,1994,14(2):1235AaboubiO,ChopartJP,DougladeJ,OlivierA.J.Electrochem.Soc,1990,137(6):1796 |
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