Volume 2, Issue 1 (2002)                   MJEE 2002, 2(1): 95-104 | Back to browse issues page

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SHOJA RAZAVI R, SHAHRABI T, MOZAFARINIA R. CORROSION OF CHROMATE CONVERSION COATINGS ON ALUMINUM ALLOYS IN ELECTRICAL AND ELECTRONIC EQUIPMENT. MJEE 2002; 2 (1) :95-104
URL: http://mjee.modares.ac.ir/article-17-12135-en.html
CORROSION OF CHROMATE CONVERSION COATINGS ON ALUMINUM ALLOYS IN ELECTRICAL AND ELECTRONIC EQUIPMENT
Reza SHOJA RAZAVI 1, Taghi SHAHRABI2 , Reza MOZAFARINIA1
1- Malek Ashtar University of Technology
2- Tarbiat Modares University
Abstract:   (3748 Views)
Chromate conversion coating is applied on aluminum 6061. The optimum conditions for chromate bath composition and immersion time are also obtained for standard requirements provision such as corrosion resistance in salt spray test, electrical resistance and coating quality. The applied coatings are electrochemically tested in sea and distilled water. According to Tafel and cyclic polarization curves, the protection mechanism are evaluated in said environments. This evaluation has shown the formation of passive film layer, contains chromate and alumina on the base. The proper behavior of corrosion and electrical conductivity is probably due to this mechanism.
Keywords: Corrosion, Chromate coating, Aluminum and Electrical and electronic equipment
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Received: 2010/10/3 | Accepted: 2010/10/3 | Published: 2010/10/3
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