Abstract:C/Ccompositeswithrefractorymetalcompoundswerepreparedbyliquidimpregnation,the distributionstateofrefractorymetalgrainwasobservedbyopticalmicroscopeandsurfacescan.Microstructuremorphologyofcarbonfibers,carbonmatrixandfiber/matrixinterfaceweremeasuredbyscanelectron microscope,transmissionelectronmicroscopeandopticalmicroscope.