粉末挤出成型纳米晶磁粉芯的脱脂与热处理研究  

Degreasing and Heat Treatment of Nano-crystalline Magnetic Powder Core Moulded by Press Extrusion

作　　者：胡雪松[1] 杜琰[2] 朱正吼[3] 

机构地区：[1]江西工业贸易职业技术学院机电系,江西南昌330031 [2]江西中医学院计算机系,江西南昌330004 [3]南昌大学材料科学与工程学院,江西南昌330031

出　　处：《热加工工艺》2011年第10期101-103,205,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(60961001);江西省科技支撑(kj200813)

摘　　要：采用粉末挤出成型法制备了Fe73.5Cu1Nb3Si13.5B9纳米晶磁粉芯,讨论了脱脂及热处理对磁粉芯磁性能的影响。结果表明:"硬脂酸-聚丙烯-石蜡"粘接剂的粘接效果好、成型方便;在热处理时间相同时,保温时间越长,温度越高,纳米晶粉颗粒运动越充分,颗粒间的间隙减小得越小,磁导率上升得越多;磁粉芯经脱脂、热处理后纳米晶粉颗粒的间隙减小,使得磁粉芯涡流损耗上升和磁粉芯中心频率下移。The effects of degreasing and heat treatment on the properties of Fe73.5Cu1Nb3Si13.5B9 nano-crystalline magnetic powder core which was moulded by press extrusion,were studied.The results show that ＂stearic acid-polypropylene-paraffin＂ adhesive formula has good bonding effects and easy formation.Under the same heat treatment time,the higher the temperature,the more fully the nano-crystalline particles move,the less the gap among particles reduce,which result in the higher μe.Degreasing and heat treatment can reduce the gap among nano-crystalline core particles,increase the vortex flowing loss and move down the frequency of core＇s center.

关 键 词：挤出成型 磁粉芯 热处理 

分 类 号：TM271.2[一般工业技术—材料科学与工程]