高温退火对浸渍包钴超微铁颗粒表面结构的影响  

Annealing Effect on the Structure of Cobalt Soaked Layer of Ultrafine Feparticles

作　　者：毛兴宇[1] 王艳敏 

机构地区：[1]集美大学基础部,福建厦门361021 [2]哈尔滨市消防支队技术科,黑龙江哈尔滨150040

出　　处：《应用科技》2001年第1期34-36,共3页Applied Science and Technology

摘　　要：浸渍包钴的超微铁颗粒 ,经高温退火以后 ,X射线衍射谱表明 ,其表面及内核的结构有了明显的变化 ,这是由于高温退火过程中钴的高游移性及磁致伸缩效应 ,导致钴离子向内核扩散 ,改变了内核及表层的晶格结构。After being annealed at high temperature, the structure of cobalt soaked ultrafine Fe particles changed obviously. Corresponding X_ray diffraction spectrum showed that the structure of α_Fe and cobalt ferrite had been distorted. This is because of the high mobility of Co 2+ and the magnetostriction of cobalt ferrite resulting in Co 2+ diffusion into inner layer and formation of Fe_Co alloy with α_Fe core.

关 键 词：表面结构 退火 热稳定性 超微铁颗粒 磁致伸缩效应 化学浸渍 浸渍包钴 钴铁氧体 

分 类 号：TM277[一般工业技术—材料科学与工程]