AN ELECTROCHEMICAL IMPEDANCE ANALYSIS ON ALUMINIUM IN 3.5% NaCl SOLUTION

J Chin Soc Corr Pro

1996, Vol. 16

Issue (2): 127-132 DOI:

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AN ELECTROCHEMICAL IMPEDANCE ANALYSIS ON ALUMINIUM IN 3.5% NaCl SOLUTION

Song Shizhe;Tang Zilong(Dept. of Materials;Tianjin University)

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Abstract Electrochemlcal impedance spectroscopy(EIS) technique、 applied to Investigate the electrochemical behaviour and corroslon characteristics ofaluminium ofindustrially pure grade In 3. 5% NaCI solution. The results showed that the appearance ofa capacltlve loop at lower anodic potentials was the feature of the system under study When the polarization potential E was more noble than-0．8V(vs. SCE),the passl、 films on the aluminium surface would be locally destroyed, and an Inductl、 loopcould beobtained at lower frequencies on the impedance spectra. The anti-corrosion performance and mechanism were discussed on the basis of the analysis on the EIS data measured at anodlc polarization.

Key words: Electrochemical impedance spectroscopy Industrial pure Industrial pure aluminiujm Localized corrosson

Received: 25 April 1996

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Cite this article:

Song Shizhe;Tang Zilong(Dept. of Materials;Tianjin University). AN ELECTROCHEMICAL IMPEDANCE ANALYSIS ON ALUMINIUM IN 3.5% NaCl SOLUTION. J Chin Soc Corr Pro, 1996, 16(2): 127-132.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1996/V16/I2/127

1FoleyRT．Corrosion,1986,42(5):2772BrettCMA．CorrosionScience,1992,33(2):2033LenderinkHJW,LindenMvd,WitJHWde．ElectrochimicaActa,1993,38(14):19894BrettCMA．J．Appl．Electrochem,1990,20:10005FrersSE,StefenelMM;MnyerC,ChierchieTJAppElectrochem．1990,20:9966曹楚南．中国腐蚀与防护学报,1990;10(2):159

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