Title

Photo-Assisted Reduction in Nanostructured Cerium-Based Coatings

Abstract

Nanostructured cerium-based coatings on AZ31 Mg alloy substrates exposed to sunlight under ambient conditions had an ~30% increase in Ce(III) species compared to unexposed coatings as measured by X-ray photoelectron spectroscopy. A decrease in film cracks and shift in bandgap from 2.5 eV to 2.7 eV were also measured. Visible changes in color, from yellow to translucent, with exposure were also observed and suggest that cerium-based coatings are reduced by light exposure in humid environments.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Cerium oxides; Magnesium alloys; Nanostructured materials; Photochemical reaction; Ambient conditions; AZ31 Mg alloys; Cerium oxides; Film cracks; Humid environment; Light exposure; Nano-structured; Photo-assisted

International Standard Serial Number (ISSN)

13596462

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2013 Elsevier Limited, All rights reserved.


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