【摘要】 利用X射线衍射分析、电子显微镜和X射线能谱分析技术 ,研究了不同Ar气氛压强下以电弧法制备的铁磁超细微粒Fe3O4和FeC .发现超细微粒的粒径、微结构和化学组分对气氛压强的依赖性 ,并对此作初步探索 .更多还原

【Abstract】 Magnetic ultrafine particles Fe\-3O\-4 and Fe C, prepared by means of the electric arc plasma technique for different atmospheric pressures of argon (Ar), were studied by wide\|angle X\|ray diffraction, transmission electron microscopy, and X\|ray photoelectron spectrometer. Argon atmospheric pressure dependence of the ultrafine particles size, microstructure and compositions were found, and the mechanism was explored preliminarily.更多还原