Characterization of plasma-sprayed alumina as thermal control coating for micro-satellite applications
R M Li, S C Joshi, H W Ng
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
Abstract
Conventional thermal control materials (TCMs) used in satellites tend to deteriorate in the severe space environment, many times leading to unanticipated mission problems. New and better TCMs are constantly sought to reduce difficulties in satellite thermal design. In this paper, the possibility of using plasma-sprayed alumina (PSA) coating for thermal control of a satellite is examined. Such PSA coatings have proved to be a good thermal barrier coating material for hot section components in air...Morecraft engines. Panels of aluminum alloys such as 2024-T3, 6061-T6, 7075, and so on which are commonly used for satellite applications, form a very compatible substrate for PSA coatings. Various physical and processing parameters and simulated in-service behaviour for PSA were studied analytically and experimentally. Prelimi- nary investigations reveal that the PSA coatings have good potential as a substitute to conven- tional TCMs for micro-satellite panels, including solar arrays.
keywords:finite element analysis, plasma spray coatings, alumina coating, satellite thermal control
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