...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Carbon: An International Journal Sponsored by the American Carbon Society >MORPHOLOGIES, MICROSTRUCTURE AND MECHANICAL PROPERTIES OF 2D CARBON/CARBON COMPOSITES DURING THE CVI DENSIFICATION PROCESS
【24h】

MORPHOLOGIES, MICROSTRUCTURE AND MECHANICAL PROPERTIES OF 2D CARBON/CARBON COMPOSITES DURING THE CVI DENSIFICATION PROCESS

机译：CVI致密化过程中二维碳/碳复合材料的形貌，微观结构和力学性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The processing-structure-properties relationship of two-dimensional carbon/carbon (C/C) during the chemical vapor infiltration (CVI) process was investigated. The weight gain, density, porosity, flexural strength and flexural modulus of C/C composites were measured as a function of CVI processing time up to 72 hours. Three regions corresponding to different microstructures were observed in the CVI densification process. In region I, the highest weight-gain rate was observed due to the largest surface area available for the deposition of PyroC. The improvement of flexural strength and modulus is most significant in this region due to the closing of microcracks in the porous C/C composites. In region II, the open pores are closed from small to large size due to PyroC deposition. In region III, the open pores are almost closed and exhibit the lowest weight-gain rate; in this region, the improvement of density and flexural strength is insignificant. However, the presence of new cracks in the final stage of the CVI process decrease the flexural modulus of CIC composites. Copyright (C) 1996. Published by Elsevier Science Ltd [References: 22]
机译：研究了二维碳/碳（C / C）在化学气相渗透（CVI）过程中的加工-结构-性能关系。测量C / C复合材料的重量增加，密度，孔隙率，抗弯强度和挠曲模量，作为长达72小时的CVI处理时间的函数。在CVI致密化过程中观察到了三个对应于不同微观结构的区域。在区域I中，由于可用于PyroC沉积的最大表面积观察到最高的增重速率。由于多孔C / C复合材料中微裂纹的闭合，抗弯强度和模量的改善在该区域最为显着。在区域II中，由于PyroC沉积，开孔从小到大都是封闭的。在区域III中，开放的孔几乎是封闭的，并且具有最低的增重率。在该区域，密度和抗弯强度的提高微不足道。但是，在CVI工艺的最后阶段出现新裂纹会降低CIC复合材料的弯曲模量。版权所有（C）1996。由Elsevier Science Ltd发布[参考：22]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号