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The effect of chromate on the pitting susceptibility of AA7075-T651 studied using potentiostatic transients

journal contribution
posted on 2014-05-01, 00:00 authored by Rajeev Gupta, Bruce HintonBruce Hinton, N Birbilis
The effect of chromate on metastable pitting of AA7075-T651 as determined via potentiostatic polarisation is reported. A systematic study of metastable pitting and its correlation with stable pits was conducted in various concentrations of sodium chromate (Na2CrO4), revealing the metastable pitting rate was able to provide a quantitative metric for pitting corrosion. The size and number of metastable pits decreased significantly in the presence of chromate. The present study is intended as a general baseline for the assessment of future chromate replacement technologies, as elaborated herein. © 2014 Elsevier Ltd.

History

Journal

Corrosion science

Volume

82

Pagination

197 - 207

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0010-938X

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2014, Elsevier