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Preparation method of ultrahigh-temperature ablation-resistant ceramic-based composite material
The invention discloses a preparation method of an ultrahigh-temperature ablation-resistant ceramic-based composite material, and relates to the technical field of ceramic-based composite materials. The composite material takes hafnium carbide as a matrix and carbon fibers as a reinforcing phase, and contains a small amount of Cu sweating agent. The C/C-HfC-Cu composite material which is good in structure and performance is prepared at low temperature through reaction infiltration of Hf-Cu alloy. According to the composite material disclosed by the invention, hafnium carbide with excellent oxidation resistance and ablation resistance is adopted as the matrix, meanwhile, the overall mechanical strength of the material is improved by the carbon fibers, and trace Cu has sweating and cooling effects, so that the composite material has excellent high-temperature mechanical properties and oxidation resistance and ablation resistance. In the composite material, the volume fraction of the carbon fiber reinforcing phase is 10%-40%, the volume fraction of the carbon matrix is 10%-20%, the volume fraction of the hafnium carbide matrix is 30%-50%, and the volume fraction of the Cu sweating agent is 5%-10%. Low-temperature infiltration is adopted, the preparation process is simple and easy to implement, the production efficiency is high, and a new production process can be provided for preparing the high-performance ceramic-based composite material.
本发明公开了一种超高温耐烧蚀陶瓷基复合材料的制备方法，涉及陶瓷基复合材料技术领域。本复合材料以碳化铪为基体，碳纤维作为增强相，含少量Cu发汗剂。通过反应熔渗Hf‑Cu合金，低温制备组织及性能良好的C/C‑HfC‑Cu复合材料。本发明的复合材料不仅基体采用抗氧化、耐烧蚀性能优异的碳化铪，且碳纤维提升了材料整体的力学强度，微量的Cu有发汗冷却作用，因此本复合材料具有优异的高温力学性能和抗氧化耐烧蚀性能。所述复合材料中碳纤维增强相的体积分数为10%‑40%，碳基体的体积分数为10%‑20%，碳化铪基体的体积分数为30%‑50%，Cu发汗剂的体积分数为5%‑10%。本发明采用低温熔渗，制备工艺简单易行，生产效率高，能够为制备高性能陶瓷基复合材料提供一种新的生产工艺。
Preparation method of ultrahigh-temperature ablation-resistant ceramic-based composite material
The invention discloses a preparation method of an ultrahigh-temperature ablation-resistant ceramic-based composite material, and relates to the technical field of ceramic-based composite materials. The composite material takes hafnium carbide as a matrix and carbon fibers as a reinforcing phase, and contains a small amount of Cu sweating agent. The C/C-HfC-Cu composite material which is good in structure and performance is prepared at low temperature through reaction infiltration of Hf-Cu alloy. According to the composite material disclosed by the invention, hafnium carbide with excellent oxidation resistance and ablation resistance is adopted as the matrix, meanwhile, the overall mechanical strength of the material is improved by the carbon fibers, and trace Cu has sweating and cooling effects, so that the composite material has excellent high-temperature mechanical properties and oxidation resistance and ablation resistance. In the composite material, the volume fraction of the carbon fiber reinforcing phase is 10%-40%, the volume fraction of the carbon matrix is 10%-20%, the volume fraction of the hafnium carbide matrix is 30%-50%, and the volume fraction of the Cu sweating agent is 5%-10%. Low-temperature infiltration is adopted, the preparation process is simple and easy to implement, the production efficiency is high, and a new production process can be provided for preparing the high-performance ceramic-based composite material.
本发明公开了一种超高温耐烧蚀陶瓷基复合材料的制备方法，涉及陶瓷基复合材料技术领域。本复合材料以碳化铪为基体，碳纤维作为增强相，含少量Cu发汗剂。通过反应熔渗Hf‑Cu合金，低温制备组织及性能良好的C/C‑HfC‑Cu复合材料。本发明的复合材料不仅基体采用抗氧化、耐烧蚀性能优异的碳化铪，且碳纤维提升了材料整体的力学强度，微量的Cu有发汗冷却作用，因此本复合材料具有优异的高温力学性能和抗氧化耐烧蚀性能。所述复合材料中碳纤维增强相的体积分数为10%‑40%，碳基体的体积分数为10%‑20%，碳化铪基体的体积分数为30%‑50%，Cu发汗剂的体积分数为5%‑10%。本发明采用低温熔渗，制备工艺简单易行，生产效率高，能够为制备高性能陶瓷基复合材料提供一种新的生产工艺。
Preparation method of ultrahigh-temperature ablation-resistant ceramic-based composite material
一种超高温耐烧蚀陶瓷基复合材料的制备方法
TONG YONGGANG (Autor:in) / ZHAO CHAOJIE (Autor:in) / LIANG XIUBING (Autor:in) / HU YONGLE (Autor:in) / HUA MANYU (Autor:in) / DENG DUNYING (Autor:in) / CHEN YONGXIONG (Autor:in) / ZHANG ZHIBIN (Autor:in)
04.06.2021
Patent
Elektronische Ressource
Chinesisch
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