【摘要】 本文采用150W连续波CO₂激光器为光源,以Fe（CO）₅,SiH₄,C₂H₄等为原料,制备出Fe/C/Si超微粒子。测定了反应火焰的瞬时温度与激光功率密度、反应压力、原料气配比等反应参数之间的关系。分别用EDTA容量法和氟硅酸钾法分析了产物中Fe,Si的百分含量,并用X射线衍射、电子衍射、透射电镜、红外光谱、激光荧光光谱等技术对超微粒子的性能进行了表征。更多还原

【Abstract】 Fe/C/Si ultrafine particles (UFP) were synthesized by laser induced vapor-phase reaction method with a 150 W CW CO2 laser as light source and SiH4, C2H4 and Fe(CO)5 as rawmaterials. The instantaneous temperature of the reaction flame was measured by a SCIT infrared thermometer. The effects of processing parameters on this temperature have been studied. Detailed characterization of samples is presented, including chemical analysis, FT-IR, TEM and XRD results.更多还原