When the TCVI stove is heating up, there will be thermal gradient in the initial fibre preform. The precursor gas will diffuse under pressure and react at the depositing temperature in the initial fiber preform to obtain C/C composites.
该工艺是在等温CVI工艺的基础上发展起来的,通过制件预制体中心加热体加热升温,使预制体沿横截面方向产生一定的热梯度,前驱体气体在压力的作用下在预制体中扩散,在一定的温度下发生热解反应并使碳沉积在纤维预制体中,从而得到致密化的C/C复合材料制件。
参考来源 - 碳/碳复合材料TCVI工艺过程温度控制研究·2,447,543篇论文数据,部分数据来源于NoteExpress
The larger the thermal gradient, the lower the anisothermal ductility.
温度梯度越大,不等温韧性越低。
These factors include magma composition, convection, diffusion, thermal gradient, oxygen fugacity, temperature, pressure, the shape of magma chamber etc.
影响韵律形成的因素很多,通常包括岩浆成分、对流作用、扩散作用、热梯度、氧逸度、温度和压力等。
The results show that the high stress is main concentred on the wall of the ladle, and high thermal stress appears at the ladle bottom with high thermal gradient.
结果表明,高应力区主要集中在钢液罐罐壁,在罐底温度梯度较大的部分会产生较大的热应力。
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