Controlled detonation of emulsion Explosive and Hexogen (a kind of high explosive, for short, RDX) was performed to prepare Fe-based oxides/SiO₂ nanoparticles. XRD (X-ray diffraction), TEM (Transmission electron microscope) and VSM (Vibrating sample magnetometer) experiments were performed to characterize and investigate the ingredients and phase structure of the granules, morphology, and distribution of the particles and the magnetism of the powders respectively. Results indicated that Fe/Urea complex detonation via emulsion explosives was advantageous to prepare Fe-based oxides/SiO₂ core-shell powders, the inner FeO/Fe core was properly coated by a silica outer shell with the core size of around 50nm and shell thickness of around 5∼10nm. And most of the raw detonation dust were converted into SiO₂ coating Fe particles with the remained core-shell structure after proper thermal treatment. Raw powders obtained by RDX detonation presented weaker magnetism than that via emulsion explosives detonation, but which was substantially improved after thermal treatment.

进行了乳化炸药和Hexogen（一种高炸药，简称RDX）的爆炸控制，制备了铁基氧化物/ SiO ₂纳米粒子。进行了XRD（X射线衍射），TEM（透射电子显微镜）和VSM（振动样品磁强计）实验，以表征和研究颗粒的成分和相结构，颗粒的形态，分布以及粉末的磁性。分别。结果表明，通过乳化炸药爆炸Fe /尿素络合物有利于制备Fe基氧化物/ SiO _2。核-壳粉末，内部FeO / Fe核被二氧化硅外壳适当包覆，核的大小约为50nm，壳的厚度约为5-10nm。经过适当的热处理后，大部分的原始爆轰粉尘都转化为具有保留的核壳结构的SiO ₂涂层铁颗粒。通过RDX爆轰获得的原粉，其磁性比通过乳化炸药爆轰的弱，但经过热处理后，磁粉的性能得到了显着改善。