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Thermal Stability of a Chemically Vapor Deposited Multilayer Coating Containing Amorphous Silica and Rutile Titania on Hi-Nicalon Fiber
Ist Teil von
Journal of the American Ceramic Society, 2003-10, Vol.86 (10), p.1797-1799
Ort / Verlag
Westerville, Ohio: American Ceramics Society
Erscheinungsjahr
2003
Quelle
Wiley Online Library Journals Frontfile Complete
Beschreibungen/Notizen
A multilayer coating consisting of consecutive layers of amorphous‐silica, rutile‐titania, and amorphous‐silica was prepared on Hi‐Nicalon fiber by chemical vapor deposition at 1050°C. It appeared that the silica and titania layers were strongly bonded to each other with no evidence of detachment and crack deflection at the interface region. The layered structure became morphologically unstable because of the growth of titania grains, the crystallization of the silica layers, and the oxidation of the fiber on exposure to 1200°C in air for 92 h.