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Carbon/carbon composite material as well as preparation method and application thereof
The invention relates to a carbon/carbon composite material as well as a preparation method and application thereof. The preparation method of the carbon/carbon composite material comprises the following steps: sequentially carrying out carbon deposition and silicon carbide deposition on a carbon fiber preform by adopting a chemical vapor deposition method to obtain a silicon carbide-containing carbon/carbon composite rough blank, dipping the carbon/carbon composite rough blank in a molybdenum source solution, baking the carbon/carbon composite rough blank, carrying out reduction reaction in areducing atmosphere to obtain a carbon/carbon composite precursor containing elemental molybdenum, and finally, carrying out melt siliconizing treatment on the carbon/carbon composite precursor to obtain the carbon/carbon composite material containing silicon carbide and molybdenum silicide. The internal components of the carbon/carbon composite material prepared by the preparation method are uniform and stable, the difference between the internal and external layer components is small, the difference between the internal thermal expansion coefficients of the material is small, and the carbon/carbon composite material has excellent high-temperature oxidation resistance and mechanical properties.
本发明涉及一种碳/碳复合材料及其制备方法与应用。碳/碳复合材料的制备方法中，先将碳纤维预制体采用化学气相沉积法依次进行碳沉积和碳化硅沉积，得到含碳化硅的碳/碳复合粗坯，再将碳/碳复合粗坯置于钼源溶液中浸渍，烘烤，再置于还原性氛围中进行还原反应，得到含有钼单质的碳/碳复合前驱体，最后将碳/碳复合前驱体进行熔融渗硅处理，得到含有碳化硅和硅化钼的碳/碳复合材料。该制备方法制得的碳/碳复合材料内部的成分均一稳定，内外层成分的差异小，材料内部的热膨胀系数差异小，兼具优异的耐高温氧化性和力学性能。
Carbon/carbon composite material as well as preparation method and application thereof
The invention relates to a carbon/carbon composite material as well as a preparation method and application thereof. The preparation method of the carbon/carbon composite material comprises the following steps: sequentially carrying out carbon deposition and silicon carbide deposition on a carbon fiber preform by adopting a chemical vapor deposition method to obtain a silicon carbide-containing carbon/carbon composite rough blank, dipping the carbon/carbon composite rough blank in a molybdenum source solution, baking the carbon/carbon composite rough blank, carrying out reduction reaction in areducing atmosphere to obtain a carbon/carbon composite precursor containing elemental molybdenum, and finally, carrying out melt siliconizing treatment on the carbon/carbon composite precursor to obtain the carbon/carbon composite material containing silicon carbide and molybdenum silicide. The internal components of the carbon/carbon composite material prepared by the preparation method are uniform and stable, the difference between the internal and external layer components is small, the difference between the internal thermal expansion coefficients of the material is small, and the carbon/carbon composite material has excellent high-temperature oxidation resistance and mechanical properties.
本发明涉及一种碳/碳复合材料及其制备方法与应用。碳/碳复合材料的制备方法中，先将碳纤维预制体采用化学气相沉积法依次进行碳沉积和碳化硅沉积，得到含碳化硅的碳/碳复合粗坯，再将碳/碳复合粗坯置于钼源溶液中浸渍，烘烤，再置于还原性氛围中进行还原反应，得到含有钼单质的碳/碳复合前驱体，最后将碳/碳复合前驱体进行熔融渗硅处理，得到含有碳化硅和硅化钼的碳/碳复合材料。该制备方法制得的碳/碳复合材料内部的成分均一稳定，内外层成分的差异小，材料内部的热膨胀系数差异小，兼具优异的耐高温氧化性和力学性能。
Carbon/carbon composite material as well as preparation method and application thereof
碳/碳复合材料及其制备方法与应用
LIAO JIQIAO (author) / LI JUN (author) / DENG HUAFENG (author) / SHI LEI (author) / GONG ZHI (author) / LI BINGJU (author) / LIU XUEWEN (author) / WANG YUEJUN (author)
2021-01-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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