摘要
采用反应熔体浸渗法制备了二维碳/碳化硅陶瓷基复合材料,并对材料的结构和力学性能进行了研究。研究表明,复合材料致密度很高,密度为2.31g/cm3,开气孔率为1.39%;垂直和平行碳布方向的压缩强度高且差别很小,分别为417.55MPa和409.28MPa,材料的压缩破坏主要由基体的压剪组合破坏情况决定,表现为剪切型破坏形式;材料的层间剪切强度高,数值为43.15MPa,明显高于采用CVI工艺制备的同类复合材料的强度值29.10MPa,层间剪切破坏主要由碳布层间基体的剪切破坏情况决定。
Continuous carbon fiber reinforced silicon carbide composites with two dimension are fabricated by reactive melt infiltration. The structure and mechanical properties are investigated. The results show that the composites are extraordinarily dense, with density 2.31g/cm^3 and open porosity 1.39%. The compressive stresses vertical and parallel to layer are almost the same, and the values are 417.55MPa and 409.28MPa respectively. The damage failure. and failure behavior is mainly determined by the failure mode of matrix, and the materials undergo brittle Comparing the interlaminar shear strength of materials fabricated by reactive melt infiltration and chemical vapor infiltration, the former （43.15MPa） is higher than the latter （29.10MPa）, and the damage behavior is mainly determined by failure mode of matrix between layers.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2005年第5期20-24,共5页
Fiber Reinforced Plastics/Composites
关键词
反应熔体浸渗法
C/SIC复合材料
结构
力学性能
reactive melt infiltration
C/SiC composite materials
structure
mechanical properties
