热处理对(Fe_(0.52)Co_(0.30)Ni_(0.18))_(73)Cr_(17)Zr_(10)非晶合金的组织结构及磁性能的影响  

Effects of Heat Treatment on Microstructure and Magnetic Properties of (Fe_(0.52)Co_(0.30)Ni_(0.18))_(73)Cr_(17)Zr_(10) Amorphous Alloy

作　　者：谢春晓[1] 钟守炎[1] 杨元政[2] 罗剑英[1] 廖梓龙[1] 

机构地区：[1]东莞理工学院机械工程学院,广东东莞523808 [2]广东工业大学材料与能源学院,广州510006

出　　处：《材料工程》2016年第8期46-50,共5页Journal of Materials Engineering

基　　金：国家自然科学基金资助项目(50971046);高等学校博士学科点专项科研基金资助项目(20124420110007);广东省联合培养研究生示范基地人才培养项目资助(2013JDXM27);广东省普通高校青年创新人才类项目资助(2015KQNCX158);广东省省部产学研项目资助(2013B090600047)

摘　　要：采用单辊急冷法制备(Fe_(0.52)Co_(0.30)Ni_(0.18))_(73)Cr_(17)Zr_(10)非晶薄带,并对该合金进行等温退火。采用XRD,AFM,VSM研究退火温度对(Fe_(0.52)Co_(0.30)Ni_(0.18))_(73)Cr_(17)Zr_(10)非晶合金的组织结构和磁性能的影响。结果表明:非晶合金晶化过程为Am→α-Fe(Co)+Am′→α-Fe(Co)+Cr_2Ni_3+Fe_3Ni_2+Cr_2Zr+未知相。当退火温度Ti<玻璃转变温度Tg时,由于结构弛豫、内应力的释放,合金的饱和磁化强度Ms有所提高;当晶化起始温度Tx<Ti<第一晶化峰值温度Tp1时,由于铁磁性α-Fe(Co)相的析出,Ms显著提升;当Ti>Tp1时,由于晶粒长大和第二相的析出,Ms急剧恶化,565℃退火能够获得最好磁性能(Ms=106.8A·m^2·kg^(-1))。490℃和565℃退火后薄带表面的AFM观察表明,AFM图片所呈现的颗粒尺寸要比用Scherrer法测得的α-Fe(Co)纳米晶尺寸大得多,这是典型的包裹晶粒现象。（Fe0.52Co0.30Ni0.18）73Cr17Zr10 amorphous ribbons were prepared by melt-spun method and annealed at different temperatures.X-ray diffraction,atomic force microscopy and vibrating sample magnetometer were adopted to study the effect of annealing temperature on the microstructure and magnetic properties of this alloy.The results show that the crystallization process of this alloy is amorphous→ α-Fe（Co）＋ amorphous′ →α-Fe（Co）＋ Cr_2Ni_3 ＋ Fe_3Ni_2 ＋ Cr_2Zr ＋ unidentified phase.When annealing temperature Tiis lower than Tg,the Msincreases slightly as a result of relaxation of the internal stress of the as-quenched amorphous alloy.When Tiis in between Txand Tp1,the Mssignificantly increases due to the partial crystallization of amorphous precursors to create a homogeneous distribution ofα-Fe（Co）nanocrystals within a residual amorphous matrix.When Tiis higher than Tp1,the Msdrops rapidly,which may be caused by the grain growth and the formation of paramagnetic phase.This alloy after annealed at 565℃ has the best magnetic property（Ms=106.8A·m2·kg-1）.The results of AFM observation show that in the annealed amorphous ribbons the grain size measured from AFM graphs is much larger than that of theα-Fe（Co）nanocrystal size caculated by Scherrer method,which is a typical phenomenon of coated grain.

关 键 词：FE基非晶合金 热处理 组织结构 磁性能 

分 类 号：TG139.8[一般工业技术—材料科学与工程]