Glass coating for SiCf/SiC composites for high-temperature application |
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| Affiliation: | 1. State Key Laboratory for Mechanical Behavior of Materialas, Xi’an Jiaotong University, Xi’an, Shannxi 710049, People''s Republic of China;2. Aerospace Research Institute of Material & Processing Technology, Beijing 100076, People''s Republic of China;1. School of Textile Science and Engineering, Xi’an Polytechnic University, Xi’an, Shaanxi, 710048, China;2. Key Laboratory of Functional Textile Material and Product (Xi’an Polytechnic University), Ministry of Education, Xi’an, Shaanxi, 710048, China;1. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600 036, India;2. Council of Scientific and Industrial Research – National Aerospace Laboratories, Bengaluru 560 017, India;1. School of Materials Science and Engineering, Chang׳an University, Xi’an 710064, China;2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China |
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| Abstract: | This work reports on the fabrication of a self-healing, oxidation-resistant glass coating for SiCf/SiC composites. The glass-coating material is a thermally stable boro-silicate glass with excellent wetting properties and viscosity.Some glass-coated composites were prepared by a simple and low-cost slurry technique, then treated in air for 100 h at 1200°C. Three-point bending tests were performed on the glass-coated composites after the thermal treatment, and the results were compared with the bending strength of the uncoated SiCf/SiC before and after the same thermal treatment. The mechanical behavior of the glass-coated composite remained almost virtually unaffected after being heated at 1200°C in air for 100 h. |
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