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| CIV工艺过程中气体传质模型与计算 | |
| 引用本文： | 肖鹏,李娣,徐永东,黄伯云.CIV工艺过程中气体传质模型与计算[J].航空材料学报,2002,22(1):11-15. |
| 作者姓名： | 肖鹏 李娣 徐永东 黄伯云 |
| 作者单位： | 1. 中南大学粉末冶金国家重点实验室,湖南,长沙,410083 2. 湖南娄底农业和农业机械学校,湖南,娄底,417000 3. 西北工业大学凝固技术国家重点实验室,陕西,西安,710072 |
| 基金项目： | 国家自然科学基金项目 (5 9772 0 31) |
| 摘 要： | 在建立碳布叠层体心立方模型、碳布叠层立方模型和纤维束叠层模型典型预制体的宏观孔隙结构几何模型和气体传质数学模型的基础上 ,研究了CVI(chemicalvaporinfiltration)工艺过程中孔隙网络结构对气体比渗透率和材料致密度的影响。结果表明 :孔隙网络的结构与形状是决定反应气体在孔隙中的比渗透率和部件最终致密度的主要因素之一。 |
| 关 键 词： | CVI工艺 气体传质模型 比渗透率 致密度 |
| 文章编号： | 1005-5053(2002)01-0011-05 |
| 修稿时间： | 2001年8月4日 |
Modeling of gas transport and calculation during CVI processing |
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| XIAO Peng ,Li Di ,XU Yong dong ,HUANG Bo yun.Modeling of gas transport and calculation during CVI processing[J].Journal of Aeronautical Materials,2002,22(1):11-15. | |
| Authors: | XIAO Peng Li Di XU Yong dong HUANG Bo yun |
| Institution: | XIAO Peng 1,Li Di 2,XU Yong dong 3,HUANG Bo yun 1 |
| Abstract: | Transport velocity of reactant species within pores of the preform is one of the key factors determining matrix deposition rate during chemical vapor infiltration processing On the base of establishment of geometry modeling for three typical net structure of pores (body centered structure,cubic structure,stacking) and numerical calculation modeling for transport of reactant species, the effect of net structure of pores on the gaseous permeability and densification were investigated The results revealed that net structure and shape of pores were two of the key factors determining gaseous permeability and final densification of composites |
| Keywords: | CVI processing modeling of gas transport permeability densification |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |