ISS external contamination surface morphology studies

James T. Visentine; John W. Alred; Carlos E. Soares; Melvin Ralph Carruth

doi:10.1117/12.417333

6 March 2001 ISS external contamination surface morphology studies

James T. Visentine, John W. Alred, Carlos E. Soares, Melvin Ralph Carruth

Proceedings Volume 4198, Optomechanical Engineering 2000; (2001) https://doi.org/10.1117/12.417333
Event: Intelligent Systems and Smart Manufacturing, 2000, Boston, MA, United States

Abstract

A study was conducted by Boeing-Houston to determine how the morphology and surface porosity of various materials and coatings used for ISS applications will influence the way contaminant molecules condense and deposit on sensitive optical and thermal control surfaces. The coatings used for these studies included: (1) clad aluminum, which served as a baseline reference material; (2) Silver Teflon film, which is used as a reflective surface for the ISS passive radiators' (3) Chromic Acid Anodized Aluminum, which is used as a thermal control coating for the ISS debris shields; (4) Sulfuric Acid Anodized Aluminum, which is used as a thermal control coating for the ISS truss elements, and Z-93P potassium silicate paint, which is used as a white reflective coating for the ISS active thermal radiators. The results of this study have shown that surface morphology, surface porosity, and surface texture greatly influence the way in which liquid silicone contaminant films condense in a vacuum environment and deposit on ISS materials and surface coatings.

Citation Download Citation

James T. Visentine, John W. Alred, Carlos E. Soares, and Melvin Ralph Carruth "ISS external contamination surface morphology studies", Proc. SPIE 4198, Optomechanical Engineering 2000, (6 March 2001); https://doi.org/10.1117/12.417333

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