期刊
CORROSION SCIENCE
卷 53, 期 1, 页码 105-112出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2010.09.028
关键词
Ceramic matrix composites; SEM; Oxidation
资金
- National Natural Science Foundation of China [50902111, 50972120]
- State Key Laboratory of Solidification Processing (NWPU), China [G8QT0222]
Ablation of zirconium carbide (ZrC) modified carbon/carbon (C/C) composites was tested by an oxyacetylene torch The formation of zirconia from the oxidation of ZrC improves the ablation resistance of the C/C composites because of the evaporation at elevated temperature which absorbs heat from the flame and reduces the erosive attack to carbon Zirconia also acts as an accelerator for carbon oxidation as it reacts with carbon during the ablation increasing the mechanical breakage rate of the fibres However the effect of mechanical breakage is inferior in the ablation of the composites The heterogeneous reactions control the ablation of the composites (C) 2010 Elsevier Ltd All rights reserved
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