Shao, GaofengLu, YucaoHanaor, Dorian A. H.Cui, ShengJiao, JianShen, Xiaodong2020-08-262020-08-262018-11-130010-938Xhttps://depositonce.tu-berlin.de/handle/11303/10083http://dx.doi.org/10.14279/depositonce-9074To 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.en666 Keramiktechnologie und zugeordnete Technologienemissivitycoatingceramicsheat shieldglassintermetallicXPSoxidationoxide coatingsArticle1879-0496