Multifunctional UV (MUV) Curable Corrosion Coatings for Aerospace Applications
The development and evaluation of an alternative corrosion coating system containing inorganic corrosion-inhibiting compounds and no VOCs, HAPs, or TRI (toxic release inventory) components is discussed. The proposed coating system would replace both the chromated primer and polyurethane topcoat with a single layer multifunctional UV (MUV) curable, corrosion inhibiting coating that acts as both the source for corrosion-inhibiting compounds and as an anti-weathering agent. Aluminum alloy 2024-T3 and 2024T0 sheets 0.032 ''thick were cut into 3''x 6 ''panels and then alkaline cleaned, deoxidized, and coated with a commercial chromate conversion coating (CrCe) per MIL-CSS41/PS12209. After conversion coating, the substrates were coated with either a commercial, military approved, epoxy-based chromated primer and a polyurethane topcoat (chromate control) or a single layer of MUV. Evaluation of MUV coatings on non-chromate conversion coatings was also conducted and demonstrated compatibility with those surface finishes.
M. O'Keefe et al., "Multifunctional UV (MUV) Curable Corrosion Coatings for Aerospace Applications," Metal Finishing, vol. 108, no. 2, pp. 28 - 31, Elsevier USA, Feb 2010.
The definitive version is available at https://doi.org/10.1016/S0026-0576(10)80038-8
Materials Science and Engineering
Keywords and Phrases
Chromate conversion coatings; Chromated primers; Coating system; Conversion coatings; Corrosion coatings; Non-chromate; Single layer; Surface finishes; Toxic release inventories; Aerospace applications; Aluminum coatings
International Standard Serial Number (ISSN)
Article - Journal
© 2010 Elsevier USA, All rights reserved.
01 Feb 2010