Fe_(77)Co_4Zr_9B_(10)合金的热稳定性、微观结构和磁性能研究  

Thermal Stability,Microstructure and Magnetic Property of Fe_(77)Co_4Zr_9B_(10) Alloy

作　　者：王晓林[1] 刘洁[2] 宋健[2] 董丽荣[2] 

机构地区：[1]吉林广播电视大学,吉林四平136000 [2]吉林师范大学物理学院,吉林四平136000

出　　处：《热加工工艺》2015年第6期74-76,共3页Hot Working Technology

摘　　要：采用单辊快淬法制备Fe77Co4Zr9B10非晶合金,在不同温度下对该合金进行热处理。利用差热分析仪(DTA)、X射线衍射仪(XRD)、原子力显微镜(AFM)以及振动样品磁强计(VSM)等手段对Fe77Co4Zr9B10合金薄带的晶化行为、微观结构和磁性能进行研究。结果表明:Fe77Co4Zr9B10非晶合金的晶化峰值温度Tp的晶化激活能Ep为525.19 k J/mol。Fe77Co4Zr9B10非晶合金在晶化初期,观察到α-Fe和α-Mn型晶化物析出;943 K退火,α-Mn型晶化物消失。Fe77Co4Zr9B10合金在晶化初期,α-Mn型晶化物的析出导致矫顽力(Hc)恶化;在943K退火后,Hc的下降与α-Mn型晶化物的消失和α-Fe相体积分数的增加有关。Fe77Co4Zr9B10amorphous alloy was prepared by melt-spinning and annealed at different temperatures.The crystallization behavior,microstructure and magnetic property of the alloy were investigated by differential thermal analysis（DTA）,X-ray diffraction（XRD）,atomic force microscopy（AFM） and vibrating sample magnetometer（VSM）.The results show that the crystallization activation energies Epof Fe77Co4Zr9B10 alloy is 525.19 k J/mol.At the initial stage of annealing,α-Fe andα-Mn type phases were observed.After annealing at 943 K,α-Mn type phase dissolves.The deteriorations in the Hcof Fe77Co4Zr9B10 alloys were observed,which is due to the precipitation of α-Mn type phase.After annealing at 943 K,the observed magnetic soften is attributed to α-Mn type dissolving and the increase of α-Fe volume fraction.

关 键 词：快淬 晶化 α-Mn型相 

分 类 号：TG139.8[一般工业技术—材料科学与工程]