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Oxidation mechanism and kinetics of SiBCN/HfC ceramic composites at high temperatures
Wei, YQ; Yang, Y; Liu, M; Li, QL; Huang, ZR
2020-03-01
Source PublicationJOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN2238-7854
Issue2Pages:2289
SubtypeArticle
AbstractSiBCN/HfC ceramic composites were obtained via mechanical alloying and hot-press sintering. We evaluated the high-temperature oxidation resistance of the SiBCN/HfC ceramic composites after heat treatments at 1500 and 1750 degrees C in static air. The SiBCN/HfC composites have an oxidation rate constant K5-20 of 1.1 mu m(2)/h at 1500 degrees C, which is less than that for other SiBCN-based ceramics (5.4 mu m(2)/h). After oxidation at 1750 degrees C, HfO2 and HfSiO4 spherical nanocrystals resulting from the oxidation of HfC were dispersed in silica layers that acted as a dense continuous protective coating on the surface of the SiBCN/HfC samples and provided a higher resistance to high-temperature exposure. (C) 2019 Published by Elsevier B.V.
DOI10.1016/j.jmrt.2019.12.060
WOS KeywordABLATION BEHAVIOR ; THERMAL-EXPANSION ; NANOCOMPOSITES ; DECOMPOSITION ; SILICA
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28251
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Wei, YQ,Yang, Y,Liu, M,et al. Oxidation mechanism and kinetics of SiBCN/HfC ceramic composites at high temperatures[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2020(2):2289.
APA Wei, YQ,Yang, Y,Liu, M,Li, QL,&Huang, ZR.(2020).Oxidation mechanism and kinetics of SiBCN/HfC ceramic composites at high temperatures.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T(2),2289.
MLA Wei, YQ,et al."Oxidation mechanism and kinetics of SiBCN/HfC ceramic composites at high temperatures".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T .2(2020):2289.
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