掺混型碳化硅纤维及其微波吸收特性

The Mixed Silicon Carbide Fiber and its MicrowaveAbsorbing Properties

运用超声将平均粒径３０ｎｍ的超细金属镍粉均匀分散到聚碳硅烷中，通过熔融纺丝、不熔化处理、烧结，制备出具有良好力学性能、电阻率连续可调的掺混型碳化硅陶瓷纤维。这种纤维与环氧树脂复合制备的三层结构吸波材料具有良好的微波吸收特性。运用ＷＡＸＤ研究了纳米镍粉在陶瓷纤维内的存在状态。

In this paper, nano nickel particle, φ=30nm, was dispersed into polycarbosilane (PC) equally by ultrasonic and subsequently magnetic mixed silicon carbide ceramic fiber, with good mechanical properties and continuous controllable resistivity, was prepared by melt spinning, curing treatment and sintering. The tri-layer structure microwave absorber composed of the mixed SiC fiber and epoxy resin have good microwaveabsorbing properties. The form of nano Ni particle in ceramic fiber was studied by WAXD.