The yttria-stabilized zirconia and interfacial coating on Nicalon? fiber |
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| Affiliation: | 1. Institute of Solid State Chemistry and Mechanochemistry, SB RAS, Kutateladze St. 18, Novosibirsk 630128, Russian Federation;2. General Institute of Geology, Geophysics and Mineralogy, SB RAS, Novosibirsk 630090, Russian Federation;3. Boreskov Institute of Catalysis, SB RAS, Novosibirsk 630090, Russian Federation;1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China;2. Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;3. ShanghaiTech university, 100 Haike Road, Shanghai 201210, China;4. University of Chinese Academy of Sciences, Beijing 100049, China;5. Analysis and Testing Center, Donghua University, Shanghai 201620, China |
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| Abstract: | Sols of yttria-stabilized zirconia may be used as simple, readily processable and accurate controllable precursors for the ZrO2 interfacial coatings on SiC-based Nicalon? fibers. The ZrO2 interfacial coatings of predictable crystal phase compositions were obtained in dependence of yttria dopant level. The morphology, composition and oxidation resistance of coated fibers were evaluated by SEM, EDS, XPS, XRD, and Raman analysis. All coatings obtained are uniform, continuous and adherent to substrates. The delamination within the ZrO2 interfacial coating was found. Possible reasons of this phenomenon are discussed. The peculiarities of the behavior of Y-stabilized ZrO2-coated fibers in air at elevated temperature are considered. |
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