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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。
The amorphous Fe76Zr12B12 ribbon was prepared by single roll rapid quenching method and was annealed at 480-800 ℃ for 60 min. The effects of annealing temperature on the structure and magnetic properties of the alloy were investigated. The results show that the amorphous state of the as-quenched Fe76Zr12B12 alloy changes from an entirely amorphous structure to a mixed structure of amorphous and nanocrystalline after annealing. With the increase of annealing temperature, the volume fraction of α-Fe crystal phase increases, the grain size grows, and the thickness of amorphous layer decreases, which leads to the increase of coercivity. The experimental results show that the coercive force of the alloy annealed at 480 ℃ is very small and increases rapidly at 600 ℃ and then slowly increases. The specific saturation magnetization gradually increases with the increase of annealing temperature.