Synthesis, Characterization, and Microstructure of Hafnium Boride-Based Composite Ceramics Via Preceramic Method

被引：24
作者：
Cai, Tao [1 ,2 ]
Qiu, Wen-Feng [1 ]
Liu, Dan [1 ]
Han, Wei-Jian [1 ]
Ye, Li [1 ]
Zhao, Ai-Jun [1 ]
Zhao, Tong [1 ]
机构：
[1] Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Lab Adv Polymer Mat, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2013年 / 96卷 / 06期
基金：
中国国家自然科学基金;
关键词：
HIGH-TEMPERATURE CERAMICS; SOL-GEL METHOD; CARBIDE POWDERS; CARBOTHERMAL REDUCTION; ZRB2-SIC COMPOSITES; ZIRCONIUM CARBIDE; OXIDATION; PRECURSORS; FIBERS; FABRICATION;
D O I：
10.1111/jace.12270
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The ceramic precursor for HfB2/HfC/SiC/C was prepared via solution-based processing of polyhafnoxanesal, linear phenolic resin, boric acid and poly[(methylsilylene)acetylene)]. The obtained precursor could be cured at 250 degrees C and subsequently heat treated at relative lower temperature (1500 degrees C) to form HfB2/HfC/SiC/C ceramic powders. The ceramic powders were characterized by element analysis, thermal gravimetric analysis, X-ray diffraction, Raman spectroscopy, and Scanning electron microscopy. The results indicated that the ceramic powders with particle size of 200 similar to 500nm were consisted of pure phase HfB2, HfC, and SiC along with free carbon as fourth phase with low crystallinity.
引用
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页码：1999 / 2004
页数：6
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