摘要
以NaBH4为还原剂,油酸为分散剂,采用液相还原法制备出了纳米Fe-Co-Ni合金,利用XRD、SEM和VSM对样品进行了表征。研究结果表明,在氮气保护下,500℃焙烧,样品由无定形态转化为晶态;颗粒呈球形,平均粒径为55nm;Fe-Co-Ni合金的抗氧化能力较强,在常温下不易被氧化;饱和磁化强度为88.9emu.g-1,矫顽力趋近于零,呈现超顺磁性。
Fe-Co-Ni nanopowders were prepared by Ioquid-phase reduction with NaBH4 as the reducing agent and oleic acid as the dispersant, the sample was characterized by XRD, DSC, SEM and VSM. The results show that the sample is converted from armphous alloy to crystal state after fired at 500℃ under nitrogen. The nanoparticles are spherical and chainlike and the average particle size is 55 nm. The samples have a strong anti-oxidization. The saturation magnetization and coercives force is 88.9 emu · g^- 1 and zero respectively. The samples exhibit superaramagnetization at room temperature.
出处
《铸造技术》
CAS
北大核心
2008年第2期203-204,共2页
Foundry Technology
基金
江苏省无机及其复合新材料重点实验室资助
江苏省生态环境材料重点实验室资助
关键词
纳米粉末
铁钴镍合金
制备与表征
Nanometer powder
Fe-Co-Ni alloy
Preparation and characterization
