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Spray Deposition of Cerium Oxide‐Based Conversion Coatings on Al 2024‐T3
Author(s) -
Jones Philip S.,
Yu Pu,
Pinc William R.,
O'Keefe Matthew J.,
Fahrenholtz William G.,
O'Keefe Thomas J.
Publication year - 2008
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2008.02188.x
Subject(s) - materials science , conversion coating , deposition (geology) , metallurgy , coating , cerium , thermal spraying , aluminium , corrosion , substrate (aquarium) , oxide , cerium oxide , alloy , aqueous solution , gas dynamic cold spray , aluminum oxide , composite material , paleontology , oceanography , chemistry , sediment , biology , geology
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.