期刊
CERAMICS INTERNATIONAL
卷 46, 期 4, 页码 4307-4313出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2019.10.152
关键词
Composites; Thermal properties; ZrO2; Thermal applications
资金
- National Natural Science Foundation of China [11472037, 11772042]
Ceramic particles were utilized to improve thermal stability and ablation properties of carbon/phenolic (C/Ph) composites. In this study, zirconium carbide (ZrC) modified C/Ph composites were fabricated by vacuum impregnation method, and effects of ZrC content on thermal stability and ablation properties were investigated by thermogravimetry analysis and plasma wind tunnel test. Moreover, morphological characterization was carried out using X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy. Experimental results showed that increasing ZrC content could lead to an evident increase in char yield, but an observable reduction in linear ablation rates and back-face temperatures because of the formation of ZrO2 layer on the ablation surface. The work provided an effective way to improve thermal stability and ablation properties of C/Ph composites.
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