Corrosion behaviour of several aluminium alloys in contact with a thermal storage phase change material based on Glauber's salt

This article presents the results of a study about the corrosion behaviour of four aluminium alloys (EN AW 2024, 3003. 6063, and 1050) in contact with a commercial thermal storage material based in the Glaubers salt (Na2SO4 center dot 10 H2O). Results indicate that the Al 2024 alloy is not compatible with this material due to the extense formation of NaAlCO3 center dot(OH)(2) in contact with air. The aluminium alloys 3003, 6063 and 1050 showed to be fully compatible with the material. (C) 2009 Elsevier Ltd. All rights reserved.