高压物理学报2016，Vol.30Issue(3)：207-212,6.DOI:10.11858/gywlxb.2016.03.005
碳包覆铁纳米颗粒的气相爆轰合成
Gaseous Detonation Synthesis of Carbon-Encapsulated Iron Nanoparticles
摘要
Abstract
Carbon-encapsulated iron nanoparticles were formed using a gaseous detonation method in a mixture of hydrogen and oxygen in which the powder and gaseous forms of ferrocene were used as the raw materials.X-ray diffraction and transmission electron microscopy analysis shows that using either of the two different states of ferrocene yields carbon-encapsulated iron nanoparticles.The encapsulated particles were composed of iron or iron-carbon compounds as the core,and the outer shell was mainly composed of graphitic carbon.The sizes of most spherical nanoparticles varied between 5 and 30 nm.When using gaseous ferrocene in the detonation,the particle size distribution was narrower,the thickness of the shell layer was more uniform,and the particles had a higher sphericity.Using the iron-carbon alloy phase diagram,an analysis of the mechanism for gaseous detonation synthesis of carbon-encapsulated iron nanoparticles was carried out.The magnetic hysteresis loops of carbon-encapsulated iron nanoparticles were analyzed,which exhibit the dual natures of hard magnetic and paramagnetic.关键词
纳米颗粒/气相爆轰/碳包铁/XRD/TEMKey words
nanoparticles/gaseous detonation/carbon-encapsulated Iron/X-ray diffraction/TEM分类
数理科学引用本文复制引用
闫鸿浩,赵铁军,李晓杰,王小红..碳包覆铁纳米颗粒的气相爆轰合成[J].高压物理学报,2016,30(3):207-212,6.基金项目
National Science Foundation of China (10872044,10602013,10972051,10902023) （10872044,10602013,10972051,10902023）
Natural Science Foundation of Liaoning Province of China (20082161) （20082161）
