作　　者： ; ; ; ; ;

机构地区： 广东工业大学物理与光电工程学院

出　　处： 《炭素技术》 2006年第4期6-9,共4页

摘　　要： 用直流碳弧法制备碳包铁纳米粒子,通过X射线衍射(XRD)、透射电镜(TEM)等分析手段对粒子的成分、形貌等进行表征；在氮气气氛中对粒子进行退火处理,对其形成机理进行了初步的探讨。结果表明：制备的粒子中含有α-Fe相和石墨相,没有铁的氧化物,纳米粒子的尺寸大小在5～50nm范围。铁粒子在碳层的保护下有很好的抗氧化能力。 The carbon - coated iron nanoparticles were produced by using DC carbon arc discharge method and characterized by transmission electron microscopy and X - ray diffraction （XRD） . The samples were annealed at different temperatures under nitrogen atmosphere. The growth mechanism of the encapsulated iron nanoparticles was discussed. The results show that the samples contain α - Fe and graphite and no iron oxide appears. The size of the carbon - coated iron nanoparticles is typically in the range 5 ～ 50 mnt Due to the protection of the carbon layers, the oxidation resistance of the carbon - coated iron nanoparticles is increased.

关 键 词： 直流碳弧法 碳包铁纳米粒子 纳米粒子 退火处理

领　　域： [一般工业技术] [理学] [理学]