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Corrosion protection afforded by praseodymium conversion film on Mg alloy AZNd in simulated biological fluid studied by scanning electrochemical microscopy

journal contribution
posted on 15.02.2015, 00:00 authored by S S Jamali, S E Moulton, D E Tallman, Maria ForsythMaria Forsyth, J Weber, A Mirabedini, G G Wallace
Surface passivation of AZNd Mg alloy with Pr(NO3)3 is studied using scanning electrochemical microscopy (SECM) in surface generation/tip collection (SG/TC) and AC modes. Corrosion protection afforded by the Pr treatment and the degradation mechanism in a simulated biological environment was examined on a local scale and compared with non-treated AZNd. SG/TC mode results revealed a drastic decrease in H2 evolution due to the Pr treatment. Mapping the local insulating characteristics using AC-SECM showed higher conductivity of the surface where H2 evolution was most favorable.

History

Journal

Journal of electroanalytical chemistry

Volume

739

Pagination

211 - 217

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

1572-6657

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2015, Elsevier