铜模吸铸法制备Fe-Nd-Al-B-Nb合金的结构和磁性能的研究  

Study on the Structure and Magnetic Properties of Fe-Nd-Al-B-Nb Alloys by Suction Casting

作　　者：蒙韬[1] 徐晖[1] 白琴[1] 谭晓华[1] 

机构地区：[1]上海大学,上海200072

出　　处：《稀有金属材料与工程》2008年第8期1384-1387,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50671059)

摘　　要：利用铜模吸铸法制备了厚度为1mm片状的[(Fe0.53Nd0.37Al0.1)96B4]100-xNbx(x=0,2,4,6,8)合金。采用示差扫描量热法(DSC),振动样品磁强计(VSM)和X射线衍射(XRD)仪研究了Nb对该合金非晶形成能力、热稳定性和磁性能的影响。结果表明,Nb元素的添加可以有效提高合金的非晶形成能力和热稳定性,且显著提高了合金的饱和磁化强度。一定量的Nb元素(≥4at%)将抑制合金中Nd2Fe14B硬磁相的析出,使合金的磁性能从硬磁性转变成软磁性。The [（Fe0.53Nd0.37Al0.1）96B4]100-xNbx （x=0～8） alloy plate of lmm in thickness were prepared by suction casting into the copper mold. The glass-forming ability, thermal stability and magnetic properties for the [（Fe0.53Nd0.37Al0.1）96B4]100-xNbx bulk alloys were investigated by X-ray diffraction （XRD）, differential scanning calorimetry （DSC） and vibrating sample magnetometer （VSM）. The results show that the addition of Nb could effectively enhance the glass-forming ability, thermal stability and saturation magnetization of the alloys. But the precipitation of hard magnetic phase Nd2Fe14B will be inhibited by the certain addition of Nb （≥4at%）, which leads to the transformation of magnetic properties from hard magnetic property to the soft magnetic property.

关 键 词：大块非晶合金 非晶形成能力 软磁性 硬磁性 

分 类 号：TG139.8[一般工业技术—材料科学与工程] TG115.27[金属学及工艺—合金]