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Main Title: Improved oxidation resistance of high emissivity coatings on fibrous ceramic for reusable space systems
Author(s): Shao, Gaofeng
Lu, Yucao
Hanaor, Dorian A. H.
Cui, Sheng
Jiao, Jian
Shen, Xiaodong
Type: Article
Language Code: en
Abstract: To develop high emissivity coatings on fibrous ceramic substrates with improved thermal resistance for reusable space systems, WSi2–MoSi2–Si–SiB6-borosilicate glass coatings were prepared on fibrous ZrO2 by slurry dipping and subsequent high temperature rapid sintering. A coating with 20 wt% WSi2 and 50 wt% MoSi2 presents optimal thermal stability with only 10.06 mg/cm2 mass loss and 4.0% emissivity decrease in the wavelength regime 1.27–1.73 μm after 50 h oxidation at 1773 K. The advantages of double phase metal-silicide coatings combining WSi2 and MoSi2 include improved thermal compatibility with the substrate and an enhanced glass-mediated self-healing ability.
Issue Date: 13-Nov-2018
Date Available: 26-Aug-2020
DDC Class: 666 Keramiktechnologie und zugeordnete Technologien
Subject(s): emissivity
heat shield
oxide coatings
Journal Title: Corrosion Science
Publisher: Elsevier
Publisher Place: Amsterdam [u.a.]
Volume: 146
Publisher DOI: 10.1016/j.corsci.2018.11.006
Page Start: 233
Page End: 246
EISSN: 1879-0496
ISSN: 0010-938X
Appears in Collections:FG Keramische Werkstoffe » Publications

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