| 共熔法制备超高温陶瓷基复合材料 |
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| 引用本文： | 杨金华,刘占军,郭全贵.共熔法制备超高温陶瓷基复合材料[J].宇航材料工艺,2018,48(1):37-43. |
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| 作者姓名： | 杨金华 刘占军 郭全贵 |
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| 作者单位： | 中国航发北京航空材料研究院先进复合材料国防科技重点实验室;中国航发北京航空材料研究院航空材料先进腐蚀与防护航空科技重点实验室;中国科学院山西煤炭化学研究所中国科学院炭材料重点实验室; |
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| 摘 要： | 首次采用共熔法制备超高温陶瓷基复合材料,三个样品初始组分分别为ZrB_2与鳞片石墨,ZrB_2、TaB_2、SiC及鳞片石墨,ZrB_2、MoSi_2与鳞片石墨。研究结果表明,共熔法制备的复合材料中各相分散均匀,产物中的石墨高度有序,石墨层间距分别为0.335 4、0.335 9与0.337 7 nm,且三者的微晶厚度分别为63.4、51.5及68.7 nm,拉曼光谱结果表明硼已经掺杂进入了石墨的网格结构。所制得的超高温陶瓷基复合材料样品中均存在一定的孔隙率,且制备的超高温陶瓷基复合材料的热导率较低。该方法为一种新型、快速、一步法制备超高温陶瓷基复合材料工艺。
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| 关 键 词： | 二硼化锆 超高温陶瓷 陶瓷基复合材料 共熔 |
| 收稿时间： | 2017/7/20 0:00:00 |
Ultra-High Ceramic Matrix Composites Made by Eutectic Method |
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| YANG Jinhu,LIU Zhanjun and GUO Quangui.Ultra-High Ceramic Matrix Composites Made by Eutectic Method[J].Aerospace Materials & Technology,2018,48(1):37-43. |
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| Authors: | YANG Jinhu LIU Zhanjun and GUO Quangui |
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| Institution: | Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Materials, AECC Beijing Institute of Aeronautical Materials, Beijing 100095;National Key Laboratory of Advanced Composites, AECC Beijing Institute of Aeronautical Materials, Beijing 100095,Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 and Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 |
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| Abstract: | Ultra-high temperature ceramic matrix composites were firstly made by eutectic method. The composites were made from ZrB2 and flake graphite, ZrB2, TaB2, SiC and flake graphite,or ZrB2, MoSi2and flake graphite, respectively. Results shows that different phases distribute uniformly in these composites, and the graphite phases in the composites were highly ordered. The d002 values of the graphite in the composites were 0.335 4, 0.335 9 and 0.337 7 nm, and the Lc values were 63.4, 51.5 and 68.7 nm, respectively. Boron had already doped into the carbon net, as indicated by the Raman analysis, and some amount of pores existed in the composites. Also, thermal conductivity coefficient of the composites were not very high. Eutectic method could be a promising method for making ultra-high temperature ceramic matrix composites. |
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| Keywords: | ZrB2 Ultra-high ceramics Ceramic matrix composites Eutectic |
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