针对C/C复合材料热梯度化学气相沉积工艺（TCVI）致密化过程温度场难以用解析法求解的问题，本文建立了TCVI过程非稳态温度场有限元模型，给出了该过程温度场变化的分布曲线，研究了温度场变化规律及致密化效率与沉积温度的关系，数值模拟结果与试验结果吻合较好，为提高TCVI工艺致密化效率提供了理论指导。
Thermal-gradient chemical vapor infiltration (TCVI) is a novel and effective process for fabricating C/C composites. However, the changing of the temperature field during infiltration is rather complex, which is difficult to obtain the results by the resolution method. In this paper, the finite element model concerning unstable temperature field for TCVI process was set up, and, temperature field and temperature distribution during the whole infiltration process were given out by numerical simulation. The relationship between deposition temperature and infiltration efficiency was also investigated. The experimental results of the temperature distribution were accordant to the simulation results.
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