Effect of High Temperature Heat Treatment on Phase Composition and Microstructure of SiBCN/HfC Ceramic Composites
文献类型:期刊论文
作者 | Wei, YQ; Yang, Y; Liu, M; Li, QL; Huang, ZR |
刊名 | JOURNAL OF INORGANIC MATERIALS |
出版日期 | 2020-08-21 |
期号 | 8页码:931 |
ISSN号 | 1000-324X |
DOI | 10.15541/jim20190595 |
文献子类 | Article |
英文摘要 | Amorphous SiBCN powders were prepared by high-energy ball milling-mechanical alloying method. The SiBCN/HfC ceramic composites were consolidated by spark plasma sintering (SPS). The influence of high temperature heat treatment on the microstructural evolution and phase composition was investigated. The results showed that the oxygen was introduced during the mechanical alloying process, leading to the oxidation of BN to form B2O3 HfO2 was formed in the sintering process result from HfC oxydation and reduced to HfB2 by carbothermal reduction reaction after heat-treatment at 1600 degrees C for 1 h. Both HfO2 and HfC were reduced to HfB2 during the heat-treatment at 1650 degrees C and 1800 degrees C by reaction of HfC + C + B2O3 -> HfB2 + CO. Introduction of oxygen causes phase transformation of the SiBCN/HfC ceramic composites after heat treatment at high temperatures, during which ceramic matrix becomes loose and porous due to volatilization of the gaseous byproducts. Therefore, control of oxygen content is the key to the real applications of SiBCN/HfC ceramic composites at high temperatures. |
WOS关键词 | MECHANICAL-PROPERTIES ; OXIDATION RESISTANCE ; ABLATION BEHAVIOR |
WOS研究方向 | Materials Science |
语种 | 中文 |
出版者 | SCIENCE PRESS |
源URL | [http://ir.sic.ac.cn/handle/331005/27820] |
专题 | 中国科学院上海硅酸盐研究所 |
推荐引用方式 GB/T 7714 | Wei, YQ,Yang, Y,Liu, M,et al. Effect of High Temperature Heat Treatment on Phase Composition and Microstructure of SiBCN/HfC Ceramic Composites[J]. JOURNAL OF INORGANIC MATERIALS,2020(8):931. |
APA | Wei, YQ,Yang, Y,Liu, M,Li, QL,&Huang, ZR.(2020).Effect of High Temperature Heat Treatment on Phase Composition and Microstructure of SiBCN/HfC Ceramic Composites.JOURNAL OF INORGANIC MATERIALS(8),931. |
MLA | Wei, YQ,et al."Effect of High Temperature Heat Treatment on Phase Composition and Microstructure of SiBCN/HfC Ceramic Composites".JOURNAL OF INORGANIC MATERIALS .8(2020):931. |
入库方式: OAI收割
来源:上海硅酸盐研究所
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