潘训岑,李雪琪,李晓杰,王小红,闫鸿浩,王宇新.气相爆轰法合成超细碳包铁纳米颗粒[J].稀有金属材料与工程,2019,47(3):981~986.[Pan Xuncen,Li Xueqi,Li Xiaojie,Wang Xiaohong,Yan Honghao,Wang Yuxin.Research on Synthesis of ultrafine Carbon-encapsulated Iron by Gaseous Detonation Method[J].Rare Metal Materials and Engineering,2019,47(3):981~986.]
气相爆轰法合成超细碳包铁纳米颗粒
投稿时间:2017-07-18  修订日期:2017-09-19
中文关键词:  碳包覆纳米铁粒子  气相爆轰法  超细纳米颗粒  磁性材料
基金项目:国家自然科学基金资助(10872081, 11672067, 11672068)
中文摘要:
      以汽化五羰基铁为铁源,采用乙炔为可燃气氛,用气相爆轰法成功合成了超细碳包铁纳米颗粒。利用TEM和XRD对合成产物进行分析表明,爆轰产物是由碳壳层、α-Fe和γ-Fe组成的球状包覆型结构,产物分散性好,颗粒大小均匀、形态规则的球形超细纳米碳包铁颗粒,铁核的平均粒径为4.5nm;Raman光谱分析也证实该纳米粒子表面由为石墨和无定型碳构成包覆。进一步将该纳米碳包铁颗粒在低真空温度673K下进行热处理发现,铁核颗粒尺寸略有长大,XRD谱线上γ-Fe相消失,转化为α-Fe相,热处理后磁饱和强度提高一倍以上。
Research on Synthesis of ultrafine Carbon-encapsulated Iron by Gaseous Detonation Method
英文关键词:carbon-encapsulated iron nanoparticles  gaseous detonation method  ultrafine nanoparticles  magnetic materials
英文摘要:
      Pentacarbonyl iron is used as iron source; acetylene is used as carbon source. Ultrafine carbon-encapsulated iron(Fe@C) nanoparticles was successfully synthesized by gaseous detonation method. XRD research carried out for the characterization indicated that the main phase of the detonation product was carbon, α-Fe and γ-Fe; and TEM experiment indicated that the product was ultrafine spherical shape particles and the inner Fe core was coated by a carbon outer shell. The particles have equable size, regular sharp and no agglomeration. The average diameter of Fe core is 4.5nm; Raman spectrum analysis also confirmed that the surface of the nanoparticles was consisted of graphite and amorphous carbon. The carbon-encapsulated iron particles were treated by heat treatment at low vacuum temperature 673K, then we can find the size of iron core particles grows slightly; γ-Fe phase turn to α-Fe phase in XRD and the saturation magnetization is more than doubled after heat treatment
作者单位E-mail
潘训岑 大连理工大学工业装备结构分析国家重点实验室 584121064@qq.com 
李雪琪 大连理工大学工业装备结构分析国家重点实验室  
李晓杰 大连理工大学工业装备结构分析国家重点实验室 Lixq@mail.dlut.edu.cn 
王小红 大连理工大学工业装备结构分析国家重点实验室  
闫鸿浩 大连理工大学工业装备结构分析国家重点实验室  
王宇新 大连理工大学工业装备结构分析国家重点实验室  
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