Effect of EDTA on corrosion behavior of 1100 pure aluminum

Surface observation and electrochemical measurements were carried out to clarify the influence of EDTA (ethylenediaminetetracetic acid) on corrosion behaviors of industrially pure aluminum alloy 1100. The consideration of the potential-pH-pY diagram and polarization analysis reveal that co-existence...

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Veröffentlicht in:Journal of Japan Institute of Light Metals 2006, Vol.56(8), pp.435-440
Hauptverfasser: SERI, Osami, HOSHI, Yuuki
Format: Artikel
Sprache:eng ; jpn
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Zusammenfassung:Surface observation and electrochemical measurements were carried out to clarify the influence of EDTA (ethylenediaminetetracetic acid) on corrosion behaviors of industrially pure aluminum alloy 1100. The consideration of the potential-pH-pY diagram and polarization analysis reveal that co-existence of EDTA and chloride ions in an environment will severely pitting-attack the aluminum alloy 1100. Pitting occurrence by co-existence of EDTA and chloride ions is ascertained by the fpitAl (pitting occurrence factor for aluminum), which gives us a way of checking whether pitting attacks will occur or not.
ISSN:0451-5994
1880-8018
DOI:10.2464/jilm.56.435