CAJ | 학술논문

用先驱体浸渗裂解法制备了碳纤维增强碳(carbon fiber reinforced carbon,C/C)-SiC复合材料,用H2-D2火焰法检测其烧蚀性能.结果表明:C/C-SiC复合材料的烧蚀率随复合材料中的Si含量的增加而呈下降趋势;经过5次浸渍,C/C-SiC复合材料的密度从1.46 g/cm3增加到1.75 g/cm3,Si含量从5.06%增加到13.8%,线烧蚀率和质量烧蚀率分别下降474%和34.5%.密度为1.75g/cm3的C/C-SiC复合材料,其线烧蚀率和质量烧蚀率分别为2.22 μm/s和1.289 mg/s,其线烧蚀率和质量烧蚀率分别为密度1.78 g/cm3的C/C复合材料的21.7%和78.6%.基体中SiC的引入明显提高了C/C复合材料的抗氧化烧蚀性能.
용선구체침삼렬해법제비료탄섬유증강탄(carbon fiber reinforced carbon,C/C)-SiC복합재료,용H2-D2화염법검측기소식성능.결과표명:C/C-SiC복합재료적소식솔수복합재료중적Si함량적증가이정하강추세;경과5차침지,C/C-SiC복합재료적밀도종1.46 g/cm3증가도1.75 g/cm3,Si함량종5.06%증가도13.8%,선소식솔화질량소식솔분별하강474%화34.5%.밀도위1.75g/cm3적C/C-SiC복합재료,기선소식솔화질량소식솔분별위2.22 μm/s화1.289 mg/s,기선소식솔화질량소식솔분별위밀도1.78 g/cm3적C/C복합재료적21.7%화78.6%.기체중SiC적인입명현제고료C/C복합재료적항양화소식성능.
Carbon fiber reinforced carbon (C/C) -SiC composites were prepared by the precursor infiltration and pyrolysis process, and the ablation properties of the C/C-SiC composites were investigated by the H2-O2 torch flame. The results indicate that the ablation rate of C/C-SiC composites decrease with the increase of Si contents. After infiltration is carried for 5 times, the density of C/C-SiC composites increases from 1.46 g/cm3 to 1.75 g/cm3 and the Si content increases from 5.06% to 13.8%. Meanwhile, the linear ablation rate and mass ablation rate of C/C-SiC specimens decrease by 574% and 134.5%, respectively. The linear ablation rate and mass ablation rate of the C/C-SiC composite with a density of 1.75 g/cm3 are 2.22 μm/s and 1.289 mg/s, only 21.7% and 78.6% of those of the C/C composite with a density of 1.78 g/cm3, respectively. The introduction of SiC in the matrix greatly enhances the anti-oxidative ablation property of the C/C composite.