【摘要】 利用液相浸渍法制备了含有难熔金属化合物的C/C复合材料,通过金相显微镜、面扫描观察了难熔金属颗粒在材料中的分散状态;并表征了碳纤维、基体碳的微观结构和纤维/基体的界面状态。研究发现,难熔金属化合物在高温下对碳具有催化石墨化和诱导石墨化作用,石墨微晶尺寸大,发育好,取向性高。更多还原

【Abstract】 C/C composites with refractory metal compounds were prepared by liquid impregnation,the distribution state of refractory metal grain was observed by optical microscope and surface scan.Microstructure morphology of carbon fibers,carbon matrix and fiber/matrix interface were measured by scan electron microscope,transmission electron microscope and optical microscope.更多还原