C/C 复合材料增强体结构对性能影响的研究

详细信息

INFLUENCE OF SUBSTRATE ARCHITECTURES ON THE PROPERTIES AND MICROSTRUCTURE OF CARBON/CARBON COMPOSITES

School of Materials Science and Engineering, Northwestern Polytechnical University, Xi′an 710072

摘要

摘要: 研究了四种C/C 复合材料增强体(1K 碳布、3K 碳布、1K 碳布+ 碳纸、1K 碳布+ 特殊碳毡) 结构对弯曲性能的影响。结果表明: 用这四种增强体制备的C/C 复合材料表现出明显的假塑性, 弯曲断口的宏观形貌呈“之”字形, 其总体力学性能良好, 但也具有较大差异。本文作者结合材料的微观形貌对这些特点的成因进行了分析。
- C/C 复合材料, 增强体结构, 弯曲性能
Abstract: The substrate architecture of carbon/carbon composites has an effect on both properties and cost of products. In this paper, four kinds of substrate architectures, that is, 1K carbon cloth, 3K carbon cloth, 1K carbon cloth+carbon paper, 1K carbon cloth+carbon felt, were selected. The compositing technology was by the improved CVD methods. The influence of substrate architectures on the properties and microstructure of the manufactured carbon/carbon composite was studied. The results show that the samples made by the four kinds of architectures all have an obvious pseudoplastic fracture behaviour and the macroscopic appearance of bending fracture fractography shows as a “Z” shape. The sample manufactured by 1K carbon cloth has the highest flexural strength, and that by 3K carbon cloth has a lowest value. The strength of other two kinds of samples is between the two.
- carbon/carbon composites