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主管单位 中华人民共和国
工业和信息化部
主办单位 中国材料研究学会
哈尔滨工业大学
主编 苑世剑 国际刊号ISSN 1005-0299 国内刊号CN 23-1345/TB

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引用本文:董威威,高刚毅,王书光,刘玲.保护气氛对Fe80Si9B11非晶带材表面特征及磁性能的影响[J].材料科学与工艺,2020,28(6):36-42.DOI:10.11951/j.issn.1005-0299.20190183.
DONG Weiwei,GAO Gangyi,WANG Shuguang,LIU Ling.Influence of protection atmosphere on surface features and magnetic properties of melt-spun Fe80Si9B11 amorphous alloy[J].Materials Science and Technology,2020,28(6):36-42.DOI:10.11951/j.issn.1005-0299.20190183.
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保护气氛对Fe80Si9B11非晶带材表面特征及磁性能的影响
董威威1,2,3,高刚毅1,王书光3,刘玲1
(1.荆楚理工学院 通用航空学院,湖北 荆门 448000;2.浙江大学 材料科学与工程学院,杭州 310027; 3.浙江兆晶电气科技有限公司,浙江 宁波 315300)
摘要:
非晶合金带材的表面特征对磁性能有着重要的影响。为研究CO保护气氛对Fe80Si9B11非晶带材表面鱼鳞纹的形成及非晶合金带材磁性能的影响规律,本文采用平面流铸法制备了Fe80Si9B11非晶合金带材,利用金相显微镜、X射线衍射仪和磁性能测试仪研究了熔潭保护气体CO流量对非晶合金带材表面特征、微观结构及磁性能的影响。研究表明,不同CO流量条件下制备的合金带材均为非晶态,且CO流量对带材厚度几乎无影响;随CO流量增大,熔潭周围气体密度和气压降低,熔潭稳定性增强,裹入熔潭的气体变少,带材贴辊面气泡尺寸变小且数量减少,带材表面的鱼鳞纹间距增大。当CO流量为0时,带材表面比较粗糙,观察不到鱼鳞纹;当CO流量为0.25和0.5 m3/h时,带材表面鱼鳞纹间距分别为1.5、2.3 mm。随CO流量增大,由于气泡对畴壁的钉扎和鱼鳞纹细化磁畴的协同作用,使带材矫顽力和铁损降低,振幅磁导率增大;磁损耗分离结果表明,随CO流量增大,磁滞损耗降低,涡流损耗增大,且铁损降低主要由磁滞损耗降低引起的。
关键词:  Fe80Si9B11非晶带材  平面流铸法  CO流量  气泡  鱼鳞纹  磁性能
DOI:10.11951/j.issn.1005-0299.20190183
分类号:TG139
文献标识码:A
基金项目:湖北省教育厅中青年人才项目(Q20184302).
Influence of protection atmosphere on surface features and magnetic properties of melt-spun Fe80Si9B11 amorphous alloy
DONG Weiwei1,2,3, GAO Gangyi1, WANG Shuguang3, LIU Ling1
(1.General Aviation School, Jingchu University of Technology, Jingmen 44800,China; 2.School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027,China; 3.Zhejiang Zhaojing Electrical Science & Technology Co.[KG-1mm], Ltd.[KG-1mm], Ningbo 315300,China)
Abstract:
Surface features have an important influence on the magnetic properties of amorphous ribbons.In this paper, in order to study the effect of CO atmosphere on the formation of scaly figures on the surface and the magnetic properties of amorphous ribbons,Fe80Si9B11 amorphous ribbons were fabricated with planar flow casting (PFC).The effect of CO flow on the surface features, microstructures, and magnetic properties of amorphous ribbons were studied by optical microscopy,X-ray diffraction(XRD), and magnetic performance testing instrument. The results show that ribbons prepared with different CO flow are amorphous, and the CO flow exert a little role on the thickness of ribbons.With increasing CO flow, the air density, and pressure around the molten pool decrease, the stability of molten pool enhances, and less gas will be wrapped in molten pool, causing a decrease in the air bubble size and number, and an increase in the scaly spacing on the ribbon surface.The ribbon prepared without CO flow shows no scaly feature, and the ribbon surface is rough. When the CO flow is 0.25 and 0.5 m3/h, the scaly spacing on the ribbon surface is 1.5 and 2.3 mm, respectively.With increasing CO flow, the coercivity and iron loss of the ribbons decrease, and the amplitude permeability increases due to the pinning effect of air bubbles on domain wall and refined magnetic domain by scaly feature. The result of iron loss separation shows that with increasing CO flow, the hysteresis loss decreases while the eddy current loss increases. The decrease of iron loss can be mainly attributed to the decrease in the hysteresis loss.
Key words:  Fe80Si9B11 amorphous ribbon  PFC  CO flow  air bubble  scaly  magnetic properties

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