退火温度对Fe76Zr12B12合金的结构及磁性能的影响
Effects of Annealing Temperature on Microstructure and Magnetic Property of Fe76Zr12B12 Alloy
杨玉蓉1, 闫国民1, 刘 立1, 刘尧棣2
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作者单位：(1. 黑河学院 物理系, 黑龙江 黑河 164300; 2. 吉林师范大学 凝聚态物理研究所, 吉林 四平 136000)
中文关键字：退火温度； 非晶； 矫顽力； 比饱和磁化强度
英文关键字：annealing temperature; amorphous; coercivity; special saturation magnetization
中文摘要：采用单辊快淬方法制备Fe76Zr12B12金属非晶薄带，在480～800 ℃等温退火60 min，研究了退火温度对该合金的结构和磁性能的影响。结果表明：淬态Fe76Zr12B12非晶合金在退火处理后由完全的非晶态结构转变为非晶与纳米晶的混合结构。随退火温度的升高，α-Fe晶体相的体积分数增加，晶粒尺寸长大，晶粒间的非晶层厚度减小，导致矫顽力逐渐增大。实验发现，480 ℃退火后合金的矫顽力很小，在600 ℃时迅速增大，此后增大缓慢。比饱和磁化强度随退火温度的升高逐渐增大。
英文摘要：Amorphous Fe76Zr12B12 alloy ribbon was prepared by single-roller melt spinning method. After annealing at 480 ℃～800 ℃for 60 min, the effects of annealing temperature on microstructure and magnetic properties of the alloy were investigated. The results show that with the increase of annealing temperature, the volume fraction of α-Fe crystal phase and grain sizes increases, the thickness of amorphous layer between grains decreases, which leads to the increase of coercivity. It is found that coercivity increases rapidly at 600 ℃, but is small when annealed at 480 ℃. Special saturation magnetization increases gradually with the increase of annealing temperature.