CAJ | 학술논문

为了探明碳源组成对化学气相渗透(CVI)制备的炭/炭复合材料密度分布及结构的影响，本文分别以丙烯(C3H6)单一碳源、丙烯/乙炔(C3H6/C2H2)混合碳源为原料，N2为稀释气体，针刺整体炭毡为预制体，在自制 CVI炉中980℃负压工艺条件下制备了炭/炭复合材料。分析了碳源组成对炭收率及所制备试样密度分布的影响，并采用偏光光学显微镜、拉曼光谱对其组织结构进行了表征。研究结果表明：相同条件下，C3H6/C2H2较C3H6的炭收率高，所制备的炭/炭复合材料内外密度梯度较小，热解炭定向度高。
위료탐명탄원조성대화학기상삼투(CVI)제비적탄/탄복합재료밀도분포급결구적영향，본문분별이병희(C3H6)단일탄원、병희/을결(C3H6/C2H2)혼합탄원위원료，N2위희석기체，침자정체탄전위예제체，재자제 CVI로중980℃부압공예조건하제비료탄/탄복합재료。분석료탄원조성대탄수솔급소제비시양밀도분포적영향，병채용편광광학현미경、랍만광보대기조직결구진행료표정。연구결과표명：상동조건하，C3H6/C2H2교C3H6적탄수솔고，소제비적탄/탄복합재료내외밀도제도교소，열해탄정향도고。
In order to understand the effect of different carbon sources on the density and microstructure of C/C composites, the C/C composites were infiltrated under negative pressure, at the temperature of 980 ℃ using C3H6 and C3H6/C2H2 mixtures as carbon sources, N2 as diluent gas, needle-punched carbon felt as porous performs. The effect of different carbon sources on the yields of pyrolytic carbon and density uniformity were investigated, the textures of pyrocarbons were observed by polarized light microscopy and Raman spectroscopy. The results show that the yields ratio and the degree of orientation of pyrolytic carbon prepared by C3H6/C2H2 mixtures are higher than that by C3H6 the density grads in the inside and outside of sample prepared by C3H6/C2H2 mixtures is smaller.