玻璃包覆FeCuNbVSi1B和CoFeNiBSi磁性合金微丝制备工艺及微结构  

Synthesis and Microstructure of Glass-coated FeCuNbVSi1B and CoFeNiBSi Alloy Microwires

作　　者：邸永江[1] 陈登明[1] 王通国[1] 贾碧[1] 江建军[2] 何华辉[2] 

机构地区：[1]重庆科技学院冶金与材料工程学院,重庆401331 [2]华中科技大学电子科学与技术系,湖北武汉430074

出　　处：《磁性材料及器件》2009年第4期19-22,共4页Journal of Magnetic Materials and Devices

基　　金：湖北省杰出青年基金计划资助项目(2005ABB002)

摘　　要：利用熔融拉丝法制备了直径范围分别为6．3～28．0μm和14．0～35．2μm、具有不同微结构的玻璃包覆Fe735Cu100Nb1.0V2．0Si13．5B9.0和C069.1Fe5.2Ni1B14.8Si9.9非晶／纳米晶磁性合金。利用X射线衍射和扫描电子显微镜分析研究了合金成分、拉丝速度、保护气体、冷却速率等对制备的玻璃包覆合金微丝微结构的影响。结果表明，拉丝速度越快，制备的玻璃包覆合金微丝的直径越小。采用氩气保护及水冷制备出呈良好非晶态的玻璃包覆合金微丝，不用水冷则制备出玻璃包覆纳米晶合金微丝，不用保护气体则制备出的是有少量氧化的玻璃包覆纳米晶合金微丝。The glass-coated amorphous and nanocrystalline Fe73.5Cu1.0Nb1.0V2.0Si13.5B9.0 and Co69.1Fe5.2Ni1B14.8Si9.9 microwires with diameters 6.3-28.2μm and 14.0-35.2μm were synthesized by the Tayor-Ulitovsky method, respectively. The influence of drawing speed, protection atmosphere and cooling speed on the microstructure and morphology of the FeCuNbVSiB and CoNiFeSiB microwires were studied by X-ray diffractometry （XRD） and scanning electron microscope （SEM）. The results showed that the microwires diameter decreases with increasing drawing speed. The amorphous microwires were synthesized in Ar protection atmosphere and by water cooling, and the nanocrystalline microwires were synthesized by Ar protection and air cooling. Slightly oxided nanocrystalline microwires were synthesized by water cooling in air atmosphere.

关 键 词：玻璃包覆合金微丝 非晶态磁性材料 纳米晶 制备工艺 

分 类 号：TM27[一般工业技术—材料科学与工程] TB383[电气工程—电工理论与新技术]