OPEN CIRCUIT STATE AND CATHODIC DIFFUSION PROCESS OF COPPER IN SULFURIC ACID SOLUTION CONTAINING FERRIC ION INTHE PRESENCE OF MAGNETIC FIELD WITH DIFFERENT INTENSITY

J Chin Soc Corr Pro

2001, Vol. 21

Issue (3): 129-136 DOI:

Research Report

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OPEN CIRCUIT STATE AND CATHODIC DIFFUSION PROCESS OF COPPER IN SULFURIC ACID SOLUTION CONTAINING FERRIC ION INTHE PRESENCE OF MAGNETIC FIELD WITH DIFFERENT INTENSITY

Zhanpeng Lv;Wu Yang;Delun Huang

上海材料研究所

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Abstract The effects of magnetic field on open circuit state and cathodic polarization behavior of copper in sulfuric acid with ferric ion w ere studied by open circuit potential measurement，polarization curve measuremen t and potentiostatic polarization measurement.Magnetic field did not affect open circuit state for Cu/H2SO4+Fe3+ systems.Magnetic field enhanced the c athodic diffusion of Fe3+ on copper electrode，and cathodic limiting diff usion current density increased with magnetic field intensity.Magnetic field eff ect coefficients for the same magnetic field intensity increased with ferric ion concentration. The minimum magnetic field intensity needed to induce significan t effect on cathodic limiting diffusion current density decreased with increasin g ferric ion concentration.It was pointed out that different thermodynamic stabi lity of Cu and Fe in solution with ferric ion led to different rate controlling steps for cathodic reaction at open circuit potential，thus magnetic field had d ifferent effects.Fit results for the relation between the magnetic field effect coefficient and magnetic field intensity and concentration of ferric ion showed that，more than one correlating equations could be obtained for the same set of experimental data.Intensive research on mechanism is needed to clarify the exact dynamic expression.

Key words: magnetic field copper cathodic reduction diffusion pr ocess magnetic field intensity

Received: 28 February 2000

ZTFLH:

TG174

Corresponding Authors: Zhanpeng Lv

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Zhanpeng Lv; Wu Yang; Delun Huang. OPEN CIRCUIT STATE AND CATHODIC DIFFUSION PROCESS OF COPPER IN SULFURIC ACID SOLUTION CONTAINING FERRIC ION INTHE PRESENCE OF MAGNETIC FIELD WITH DIFFERENT INTENSITY. J Chin Soc Corr Pro, 2001, 21(3): 129-136 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2001/V21/I3/129

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