Fe71-xNb9B20Wx磁性非晶合金玻璃形成能力及热稳定性研究  

Glass Forming Ability and Thermal Stability of Fe71-xNb9B20Wx Magnetic Amorphous Alloys

作　　者：张毛 朱满[1] 姚丽娟[1] 坚增运[1] ZHANG Mao;ZHU Man;YAO Lijuan;JIAN Zengyun(School of Materials and Chemical Engineering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]西安工业大学材料与化工学院

出　　处：《西安工业大学学报》2019年第5期559-564,共6页Journal of Xi’an Technological University

基　　金：国家自然科学基金（51301125;51671151）;陕西省教育厅重点实验室科研计划项目（17JS055）

摘　　要：为了研究W元素部分替代Fe元素对Fe基非晶合金热稳定性和软磁性能的影响规律,文中采用单辊旋淬法制备了Fe71-xNb9B20Wx(x=1,3,5)非晶合金带材,利用X射线衍射仪(XRD)、差示扫描量热仪(DSC)及振动样品磁强计(VSM)等手段测试Fe71-xNb9B20Wx非晶合金的热学性能和软磁性能。研究结果表明:Fe基非晶的晶化过程与W含量密切相关,随着W含量的增加,合金由两次晶化过程转变为一次晶化过程。添加W元素能够有效提高Fe基非晶合金的玻璃形成能力,改善合金的热稳定性。Fe66Nb9B20W5非晶合金具有优异的热稳定性和较高的非晶形成能力,过冷液相区宽度Tx和晶化起始温度Tx1分别高达58 K和928 K。合金的饱和磁感应强度Ms和矫顽力Hc分别为42~90 emu·g^-1和0.61~6.59 Oe,其中Ms随着W含量的增加而降低。A series of new amorphous alloy Fe71-xNb9B20Wx(x=1,3,5) were successfully prepared by melt-spinning methods in order to study the influence of partial replacement of Fe with W element on thermal stability and soft magnetic properties of Fe-based amorphous alloys.The thermal and soft magnetic properties of Fe71-xNb9B20Wx amorphous alloys were tested by means of X-ray diffraction(XRD),differential scanning calorimetry(DSC) and vibrating sample magnetometer(VSM).The results indicate that the crystallization process of Fe-based amorphous alloys is closely related to W content.The alloys change from two-stage crystallization evevts to single crystallization event with increasing W content.The addition of W element can effectively improve the glass forming ability and thermal stability of Fe-based amorphous alloys.Fe66Nb9B20W5 amorphous alloy with ΔTx=58 K and Tx1=928 K has excellent thermal stability and high amorphous forming ability.These alloys exhibit excellent soft magnetic properties with high saturation magnetization(Ms) of 42~90 emu·g^-1 and low coercivity(Hc) of 0.61~6.59 Oe.With increasing W content,the saturation magnetization(Ms) decreases gradually.

关 键 词：FE基非晶合金 热稳定性 非晶形成能力 软磁性能 

分 类 号：TG146.4[一般工业技术—材料科学与工程]