High performance SiC (W core) filament with a C surface layer wasprepared by radio frequency CVD technique,and SiC (W core) filament with SiO2 surface layer was also prepared by electro-chemical treatment.The mechanical properties of the filaments are rated being up to the international advanced level. The filaments have a good interface compatibility with Al,Ti alloy and resin matrixes. The SiC (W core) filament/resin composites also have the capability to absorb electromagnetic waves. The SiC (W core) filament composites are expected to be widely used in the fields of aviation and aerospace.%使用射频加热CVD新工艺制备出带有碳表面涂层的高性能SiC(W芯)纤维；同时使用电化学方法对SC纤维进行表面处理，制备出带有SiO2表面涂层的高性能SiC(W芯)纤维。其力学性能均达到国际先进水平。以上SiC(W芯)纤维与金属基体，如铝、钛合金等．以及树脂基体界面相容性良好；SiC(W芯)纤维／树脂基复合材料并具有明显的吸收电磁波的性能。
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