Fabrication and evaluation of 3-dimensional Tyranno fiber reinforced SiC composites by repeated infiltration of polycarbosilane
Fabrication and evaluation of 3-dimensional Tyranno fiber reinforced SiC composites by repeated infiltration of polycarbosilane
复制标题
聚碳硅烷重复渗透三维 Tyranno 纤维增强 SiC 复合材料的制备和评估
DOI：
10.2109/jcersj.103.1
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
M. Iwasa
中科院分区：
文献类型：
--
作者：
Takahiro Tanaka;N. Tamari;I. Kondoh;M. Iwasa
通过将熔融聚碳硅烷浸渍到三维纺织预制体(体积分数：39%)中，然后在高达1200℃的Ar气氛中进行热解，制备了三维Tiranno纤维增强碳化硅复合材料。通过重复浸渍和热解过程来提高复合材料的密度。重复10次可使复合材料的密度提高到2.4×103 kg·m-3(相对密度：83%，开孔率：5%)。复合材料的弯曲强度和断裂韧性分别为420 Mpa和11.5 Mpa·m1/2。复合材料表现出半稳态断裂行为，这是由于平行于拉伸方向的纤维发生桥联。
3-Dimensional Tyranno fiber reinforced SiC composites were fabricated by infiltration of molten polycarbosilane into a 3-dimensional textile preform (volume fraction: 39%) in an autoclave followed by pyrolysis in an argon atmosphere up to 1200°C. An attempt was made to improve the density of the composite by repeating the infiltration and pyrolysis process. Ten times repetition increased the density of the composite to 2.4×103kg·m-3 (relative density: 83%, open porosity: 5%). The bending strength and fracture toughness of the composite were 420 MPa and 11.5 MPa·m1/2, respectively. The composite showed semistable fracture behavior because of bridging of fibers parallel to the tensile direction.