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论文类型： 期刊论文

发表时间： 2021-07-21

发表刊物： RARE METAL MATERIALS AND ENGINEERING

卷号： 39

页面范围： 429-433

ISSN号： 1002-185X

关键字： detonation synthesis; carbon encapsulated; iron-nickel nanoparticles; core-shell structure; magnetic behavior

摘要： Carbon-encapsulated ferronickel nanoparticles were synthesized using the composite explosive precursors doping with iron nitrate and nickel nitrate by detonation method. The XRD, TEM, EDX, XRF and VSM were used to characterize the morphology, components, phases and magnetism of nanocomposite particles. Results show that these nanoparticles has perfect core-shell structure and the grain size distribution are in a range of 10-60 nm. The composite particles whose coating shell were graphite carbon could be dispersed finely. The core of nanoparticles were composed of different mole ratio of iron and nickel to that of the above explosive precursors. The magnetic analysis indicate that the different composite nanoparticles have good superparamagetism at room temperature.