摘要
以苯为碳源、二茂铁为催化剂在竖式炉中用流动法连续制备外径为40~100 nm、长度为50~1 000μm的碳纳米管;碳纳米管经过预处理后,采用化学镀工艺在表面均匀镀覆纳米钴-磷微粒并进行了热处理,用TEM、XRD、磁强计等方法对纳米钴-磷/碳纳米管进行了表征。结果表明:钴-磷微粒的粒径为15~40 nm,形成的是磷在钴晶粒中的置换固溶体,但晶体结构不完整;未经热处理的钴-磷/碳纳米管呈现很大的矫顽力,达到1.332×106A.m-1,经过400℃热处理后,有Co2P的新物相析出,其磁性能表现为矫顽力减小、磁化率增大。
Carbon nanotubes were prepared by catalytic decomposition of benzene using floating transition method with ferrocene as catalyst. The carbon nanotubes were straight with diameter 40-100 nm and length 50-1 000 μm.Co-P nanoparticles were deposited on the carbon nanotubes by electroless process after pretreatment.The Co-P/carbon nanotubes were characterized by TEM,XRD and magnetometer.The results show that the structure of particles was sosoloid of phosphorus dissolved in microcrystalline cobalt matrix with th...
出处
《机械工程材料》
CAS
CSCD
北大核心
2008年第4期62-65,共4页
Materials For Mechanical Engineering
基金
北京市科技新星计划资助项目(H020821280120)
关键词
碳纳米管
化学镀
钴合金
磁性能
carbon nanotube
electroless plating
cobalt alloy
magnetic property
