摘要
采用化学气相渗透(CVI)结合溶液浸渍法制备C/S iC-W多元基复合材料,利用XRD和SEM对材料的物相组成及微观结构进行表征,并对制备过程的反应机理进行初步探讨。结果表明,W在复合材料中成颗粒团聚状,它不仅能渗入到复合材料的纤维束间,还渗入到纤维束内。制得C/S iC-W复合材料的密度为4.1g/cm3,开气孔率为12%。
A multi-phase matrix C/SiCW composite was prepared by combining chemical vapor infiltration(CVI) technology with solution impregnation method.The phase composition and microstructure of the composite were identified and characterized by XRD and EDS methods,respectively.Reaction mechanism was discussed primarily.The results show that agglomerate tungsten particles are found to infiltrate the pores among the fiber bundles,also among the filaments.The density and open porosity of the C/SiC-W composite are 4.1g...
出处
《航空材料学报》
EI
CAS
CSCD
2006年第3期152-156,共5页
Journal of Aeronautical Materials
基金
国家自然科学基金重点项目(90405015)
