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Iranian Journal of Materials Science and Engineering، جلد ۶، شماره ۳، صفحات ۴۴-۵۰
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عنوان انگلیسی NANO- SCALE LOCALIZED CORROSION STUDIES OFEN AW- 3003ALALLOYBYSEM-EDS, SKPFM AND IN-SITU AFM
چکیده انگلیسی مقاله Abstract: Localized corrosion of aluminum alloys is often triggered by intermetallic particles, IMP’s. To understandthe role of IMP’s in corrosion initiation of EN AW-3003, efforts were made to combine nano-scale ex-situ analysis ofthe IMP’s by SEM-EDS, SKPFM and in-situ AFM monitoring of the localized attack in chloride containing solution.The results showed that two distinct types of eutectically-formed constituent IMP’s exist the -Al(Mn,Fe)Si and theAl(Mn,Fe) phases. However, the exact chemical composition of the IMP’s varies with the particles size. Volta potentialdifference of surface constituents revealed that IMP’s have a higher Volta potential compared to the matrix, indicatingthe cathodic characteristic of the IMP’s. Noticeably, the boundary regions between the matrix and IMP’s exhibited aminimum Volta potential probably the sites for corrosion initiation. Localized corrosion attack monitored by in-situAFM clearly showed the trench formation occurrence around the large elongated IMP’s in the rolling direction.
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نویسندگان مقاله a داودی | a davoodi
tarbiat moallem university of sabzevar, department of materials science ad engineering. sabzevar, iran


j پانته ch leygraf | j pan ch leygraf
royal institute of technology, division of surface chemistry-corrosion science, stockholm, sweden


gh r ابراهیمی | gh r ebrahimi
royal institute of technology, division of surface chemistry-corrosion science, stockholm, sweden


m javidani | m javidani
tarbiat moallem university of sabzevar, department of materials science ad engineering. sabzevar, iran
نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-3-102&slc_lang=en&sid=en
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زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه سرامیک
نوع مقاله منتشر شده Research paper
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