Spray Deposition of Cerium Oxide-based Conversion Coatings on Al 2024-T3

Abstract

Cerium oxide conversion coatings were deposited on aluminum alloy 2024-T3 panels from an aqueous solution using a spray process. Substrate cleaning temperature was varied to evaluate its effect on deposition. Coating thickness did not increase linearly with the number of spray cycles. Deposition rate increased after five spray cycles for panels cleaned at 55°C or 65°C. After 15 spray cycles, coatings were <100 nm thick on panels cleaned at 45°C, but were more than 300 nm thick on panels cleaned at 55°C or 65°C. Based on corrosion testing, the best coatings formed on panels cleaned at 55°C.

Department(s)

Materials Science and Engineering

Sponsor(s)

Strategic Environmental Research and Development Program (U.S.)

Keywords and Phrases

Conversion Coatings; Corrosion Testing; Deposition Rate; Spray Process

International Standard Serial Number (ISSN)

1546-542X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2008 John Wiley & Sons, All rights reserved.

Publication Date

19 Feb 2008

Link to Full Text

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