Journal
CERAMICS INTERNATIONAL
Volume 42, Issue 15, Pages 17932-17935Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.08.044
Keywords
Mullite coating; Ceramics; Hot dipping; Oxidation; Carbon/carbon composites
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Funding
- National Natural Science Foundation of China [51272146]
- Fund of State Key Laboratory of Solidification Processing (NWPU), China [SKLSP201301]
- Graduate Innovation Foundation of Shaanxi University of Science and Technology
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A dense, uniform, crack free and well-bonded oxidation-protective mullite coating was successfully fabricated on SiC-coated carbon/carbon (C/C) composites by a novel hot dipping process. XRD and EDS line scanning analyses shows that the phase of the coating is composed of mullite and the bonding coating between the coating and C/C composites is composed of SiC and Si. Besides, SEM images of the surface and cross-section of the coating also display the dense microstructure. The mullite/SiC coating was found to protect C/C composites from oxidation at 1773 K for 168 h with a weight loss rate of only 3.9 x 10(-5) g cm(-2) h(-1). (C) 2016 Published by Elsevier Ltd and Techna Group S.r.l.
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