通过CVI+PIP制备了准三维针刺C/C-SiC薄壁喉衬,预制体碳布铺层方式分别采用与喉衬内型面形状相同的仿形铺层以及与喉衬入口端角度相同30°铺层.研究了两种铺层方式对最终构件层间弯曲性能、整体承压性能以及抗烧蚀抗冲刷的影响.结果表明,构件的弯曲强度分别为205和152 MPa;水压爆破压力分别为6.5和4.9 MPa.用与材料表面夹角为30°的氧乙炔气流考查材料的抗烧蚀及冲刷性能,同角度铺层成型材料抗冲刷能力明显较好,200 s其线烧蚀率为仿形铺层成型材料的70%.
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