Fe_(76-x)Hf_xY_4B_(20)(x(x)=2,4,6%)合金的热稳定性和磁性能  

Thermal stability and magnetic property of Fe_(76-x)Hf_xY_4B_(20)(x(x)=2,4,6%)alloys

作　　者：董丽荣[1] 左彬[1] 于万秋[1] 曲丹丹[1] 张琦[1] 华中[1] DONG Lirong ZUO Bin YU Wanqiu QU Dandan ZHANG Qi HUA Zhong(Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, China)

机构地区：[1]吉林师范大学功能材料物理与化学教育部重点实验室,吉林四平136000

出　　处：《兵器材料科学与工程》2017年第2期38-41,共4页Ordnance Material Science and Engineering

基　　金：吉林省教育厅"十二五"科技研究项目(2015-228)

摘　　要：用单辊旋淬法制备Fe_(76-x)Hf_xY_4B_(20)(x(x)=2,4,6%)非晶合金,在不同温度下分别对合金进行等温退火处理,利用差热分析仪(DTA)、X射线衍射仪(XRD)、透射电子显微镜(TEM)、振动样品磁强计(VSM)研究合金的热稳定性、结构和磁性能。结果表明:Fe_(76-x)Hf_xY_4B_(20)(x(x)=2,4,6%)非晶合金的第一晶化峰值随着Hf含量的增多而增高,热稳定性得到增强;Fe_(76-x)Hf_xY_4B_(20)(x(x)=2,4,6%)合金退火后,先有α-Fe相析出,随退火温度升高,同时伴有Fe_2B和Fe_(23)B_6的析出,3种合金晶化过程相似;饱和磁化强度M_s值随退火温度升高呈稍有增大、减少、再增大的变化趋势,矫顽力H_c值基本上是随温度升高而增大。Fe76-xHfxY4B20（x（x）=2,4,6%）amorphous ribbons were prepared by the single roller melt-spinning and were isothermally annealed at different temperature. Thermal properties,microstructures and magnetic properties of the samples were investigated by differential thermal analysis（DTA）,X-ray diffraction（XRD）,transmission electron microscopy（TEM）and vibrating sample magnetometer（VSM）,respectively. The results show that first crystallization peak value of Fe76-xHfxY4B20（x（x）=2,4,6%）amorphous alloy increases with the increase of Hf content,and the thermal stabilities of the alloy are enhanced.The α-Fe phase is precipitated from the amorphous matrix in their initial stage of crystallization process and then Fe2 B and Fe23B6 are precipitated with the increase of annealing temperature. The crystallization processes of Fe76-xHfxY4B20（x（x）=2,4,6%）amorphous alloy are similar. The Msof the alloys all increases firstly and then decreases,and increases finally with the increase of annealing temperature,and the Hcof the alloys all increases.

关 键 词：非晶合金 等温退火 热稳定性 磁性能 矫顽力 

分 类 号：TB331[一般工业技术—材料科学与工程]