CAJ | 학술논문

以丙烯为碳源气体，研究平板针刺预制体在不同倾斜角放置和不同进气方式条件下化学气相渗透（ CVI）工艺制备C／C复合材料的致密化效果。采用工业CT、浸泡介质法和偏光显微镜对沉积样品的密度分布、开孔孔隙率和织构分别进行表征。沉积102 h后，倾斜17°、前进气条件下试件的密度最高，达到1．45 g／cm－3。结果表明，试样由底端到顶端的密度是有小幅递增的，开孔孔隙率是逐渐减小的。4块试件热解炭的织构以光滑层为主，试样消光角的测量结果表明直立状态和倾斜17°、后进气状态热解炭织构取向度从底部到顶端有增大的趋势，这种织构的增长趋势与锥形回转体扩张段的材料设计相符合。
이병희위탄원기체，연구평판침자예제체재불동경사각방치화불동진기방식조건하화학기상삼투（ CVI）공예제비C／C복합재료적치밀화효과。채용공업CT、침포개질법화편광현미경대침적양품적밀도분포、개공공극솔화직구분별진행표정。침적102 h후，경사17°、전진기조건하시건적밀도최고，체도1．45 g／cm－3。결과표명，시양유저단도정단적밀도시유소폭체증적，개공공극솔시축점감소적。4괴시건열해탄적직구이광활층위주，시양소광각적측량결과표명직립상태화경사17°、후진기상태열해탄직구취향도종저부도정단유증대적추세，저충직구적증장추세여추형회전체확장단적재료설계상부합。
Flat needling carbon felts were infiltrated with various inclined angles and gas admission methods, using propylene as carbon source. Density distribution, open porosity, texture of the infiltration samples were characterized by using industrial CT, dielectric soak method and polarized?light microscopy. Under the condition of inclined angle 17° and front gas inlet, density of the infiltrated sample reaches 1.45 g/cm3 after infiltration for 102 h. The density is increasing slightly and the open porosity is decrea?sing gradually, from the bottom to the top of the samples. Texture of pyrolytic carbon in the samples belongs to smooth laminar main?ly. Extinction angle of the samples were measured and the results show that the orientation degree of the texture increases from the bottom to the top of the samples infiltrated with inclined angle of 0° and 17° under back gas inlet. The growth trends of the texture correspond to the design of the materials used for nozzle divergent.