C/C复合材料烧蚀形貌测量及烧蚀机理分析

对C／C复合材料试件的表面细观烧蚀进行了常压下的亚、超声速和高压下的亚音速烧蚀形貌的测量；根据测量结果，分析了C／C复合材料在上述情况下的质量损失规律。结果表明：C／C复合材料在亚音速流场的条件下，z向纤维束首先发生剥蚀，当压力升高时，碳布会发生层间剥蚀的现象；而在超音速条件下，碳布更容易发生剥蚀的现象。

Pattern Surface Measure and Ablation Analysis for C/C Composite Material

Different microstructures of ablated surfaces, including those under normal pressure and subsonic or supersonic flow field and those under high pressure and subsonic flow field, are measured for the samples of C/C composite materials.Based on experimental results, mass loss rules under corresponding conditions are given. The results demonstrate that under the subsonic flow fields there firstly exists mechanical erosion of fibers in z direction and with the pressure higher laminated carbon cloth will be peeled between the layers,but under supersonic flow fields, the carbon cloth will be eroded more easily.