等离子体活化法制备纳米磁性液体  

The Developing of Nano-Magnetic Fluid Using Plasma

作　　者：李学慧[1] 齐锐[1] 薛志勇[1] 张秀玲[1] 刘中凡[1] 安宏[1] 

机构地区：[1]大连大学,辽宁大连116622

出　　处：《稀有金属材料与工程》2004年第8期858-860,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金资助(50077002);辽宁省自然科学基金(2003-2153)

摘　　要：采用等离子体手段,在自行研制的等离子体反应装置上,对常压下气-液两相混合介质进行活化和电离制备纳米磁性液体。结果表明:通过控制脉冲等离子体的放电参数,优化五羰基铁的热解温度,可使纳米磁性液体反应流程缩短至2 h左右;制备的纳米磁性液体流动性好,磁饱和强度达6.510-2T左右(未浓缩)。实验证明,等离子体手段能够实现向反应系统提供气-液分子重新组合所需要的活化能,是加快合成纳米磁性液体的1种有效的新方法。The magnetic fluid was investigated in a gas-liquid reactor made by using plasma activation and ionization reactants at atmospheric pressure. The reaction time was shorted to 2 hours by controlling discharge parameter of plasma and optimizing the thermal decomposition temperature of Fe(CO)(5). The magnetic fluid has good fluidity with saturated magnetic intensity of 6.5 x 10(-2)T(non-concentrated). The experiments show that plasma can supply needed activation energy for gas-fluid reactants molecules to recombine and to form magnetic fluid, and it is effective method for synthesis of magnetic fluid.

关 键 词：等离子体 活化 磁性液体 

分 类 号：TB383[一般工业技术—材料科学与工程]