Institute of Chemistry, Chinese Academy of Sciences
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DOI:
10.7502/j.issn.1674-3962.2015.10.02
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Abstract:
Fiber reinforced ultra-high temperature ceramics matrix composites (CMCs) are potential candidates for thermal protection system in hypersonic vehicles because of their excellent and unique combination of high melting points, good thermal-shock resistance and superior ablation/oxidation resistance. Ceramic precursors, determining manufacture cycles and performance of CMCs, are key raw materials. Preparation and characterization of ultra-high temperature ceramic precursors were reviewed in this article. So far, the development of ultra-high temperature ceramics has extended from sol-gel to polymer precursor method, from refractory metal oxides to carbides, borides and nitrides, from single phase to composite ceramics. In future, oxygen-free ceramic precursors and composite ceramic precursors will be the main direction, in addtion, the characterazation of the precursors and their derived ceramics should also be emphasized