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XPS AND CORROSION STUDIES ON ZINC PHOSPHATE COATED 7075-T6 ALUMINUM-ALLOY

TitleXPS AND CORROSION STUDIES ON ZINC PHOSPHATE COATED 7075-T6 ALUMINUM-ALLOY
Publication TypeJournal Article
Year of Publication1994
AuthorsHeung, WF, Yang, YP, Wong, PC, Mitchell, KAR, Foster, T
JournalJournal of Materials Science
Volume29
Pagination1368-1373
Date PublishedMar
Type of ArticleArticle
ISBN Number0022-2461
KeywordsPRIMER, RAY PHOTOELECTRON-SPECTROSCOPY, SURFACES
Abstract

X-ray photoelectron spectroscopy (XPS), combined with scanning electron microscopy (SEM), weight loss tests and atomic absorption spectroscopy (AAS), has been applied to investigate the corrosion protection properties of zinc phosphate when coated on 7075-T6 aluminium alloy. XPS is consistent with the coating process leading to both physically adsorbed and chemically absorbed zinc. The former is washed away by ultrasonic washing, but the chemically absorbed component, identified as ZnO(x), is incorporated into the aluminium oxide layer. This layer helps suppress the dissolution of aluminium during the corrosion process.

URL<Go to ISI>://A1994NA77000034