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Mo元素对(Fe0.5Co0.5)68-xNb6B26Mox(x=0,0.5,1,2)非晶薄带玻璃形成能力和软磁性能的影响
Effect of Mo on the Formability and Soft Magnetic Properties of (Fe0.5Co0.5)68-xNb6B26Mox(x=0,0.5,1,2) Thin Amorphous Ribbons
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- DOI:
- 作者:
- 姚丽娟 李坤 陶鹏 朱满 坚增运
YAO Lijuan;LI Kun;TAO Peng;ZHU Man;JIAN Zengyun
- 作者单位:
- 西安工业大学材料与化工学院
School of Materials Science and Chemical Engineering,Xi'an Technological University,Xi'an 710021,China
- 关键词:
- 单辊甩带法 非晶合金 玻璃形成能力 热稳定性 软磁性能
melt-spinning amorphous alloys amorphous formability thermal stability soft magnetic properties
- 摘要:
- 采用单辊甩带法制备了(Fe0.5Co0.5)68-xNb6B26Mox(x=0,0.5,1,2)非晶合金带材,利用X射线衍射仪(XRD)、差示扫描量热仪(DSC)和振动样品磁强计(VSM)等手段,研究了该非晶合金的结构特征、热学和磁学性能。结果表明,不同Mo含量的合金在升温过程中均存在明显的玻璃化转变阶段和一个晶化过程。添加Mo元素有利于提高合金的热稳定性和玻璃形成能力。随着Mo含量由x=0增加至x=2,合金的晶化起始温度Tx由884K增加至940K,而过冷液相区宽度ΔTx则由91K增加至104K。(Fe0.5Co0.5)66Nb6B26Mo2非晶合金具有高热稳定性和优异的玻璃形成能力,其ΔTx=940K、ΔTx=104K。该合金带材为典型的软磁合金,矫顽力较低。随Mo含量的增加,Ms由81 emu·g-1降低到59 emu·g-1,这主要是由于添加Mo元素产生反铁磁耦合作用导致合金磁矩减小所导致的。
The (Fe0.5Co0.5)68-xNb6B26Mox(x=0,0.5,1,2) amorphous alloy ribbons was prepared by melt-spinning method.The microstructural characteristics,thermal and magnetic properties of the amorphous alloy were investigated by means of X-ray diffractometer(XRD),differential scanning calorimeter(DSC)and vibrating sample magnetometer(VSM).The results show that the alloy with different Mo content has obvious vitrification transition stage and a crystallization process during the heating process.The addition of Mo element can improve the thermal stability and amorphous formability of the alloy.With the increase of Mo content x from 0 to 2,the initial crystallization temperature Tx increases from 884 K to 940 K,while the width ΔTx increases from 91 K to 104 K.The amorphous ribbons exhibit a typical soft magnetic alloy with low coercivity.With the increase of Mo content,Ms decreases from 81 emu·g-1 to 59 emu·g-1,which is mainly due to the decrease of magnetic moment caused by the antiferromagnetic coupling effect of Mo addition.