【作者】 晁月盛； 张荣华； 尹丽娟；

【Author】 CHAO Yue-sheng,ZHANG Rong-hua,YIN Li-juan (College of Science,Northeastern University, Shenyang 110004,China)

【机构】 东北大学理学院；

【摘要】 元素铁、钴、铪、铜(纯度为99.99%)及工业硼铁经充分混合,以真空感应炉炼制母合金(Fe1-xCox)86Hf7B6Cu1(x=0.3、0.5、0.55);用单辊急冷法(辊面线速度约为42m/s,喷铸压差0.05MPa,氩气保护)制备宽约2mm、厚30μm的非晶态薄带,即Fe60Co26Hf7B6Cu1、Fe43Co43Hf7B6Cu1和Fe39Co47Hf7B6Cu13种非晶态合金;不同加热速率下的DTA分析及相同磁脉冲处理条件下的晶化情况研究表明,这3种非晶态合金的结构稳定性高低依次为Fe43Co43Hf7B6Cu1>Fe60Co26Hf7B6Cu1>Fe39Co47Hf7B6Cu1。更多还原

【Abstract】 Fe(99.99%),Co(99.99%),Hf(99.99%),Cu(99.99%) and commercial ferroboron were mixed and melted in a vacuum arc melting furnace to make (Fe1-xCox)86Hf7B6Cu1 alloy ingot with x=0.3,0.5,0.55. Amorphous ribbon of 2mm width and 30-40m in thickness was prepared using the single-roller melt-spinning technique in an argon atmosphere. The surface linear velocity of the copper wheel was about 42m/s. The structural stability and crystallization behaviour of the amorphous specimens before and after magneto-pulsing were investigated using DTA,XRD and Mssbauer technique.The results show that the thermal stability of the 3 type of amorphous alloys may be arranged as Fe43Co43Hf7B6Cu1>Fe60Co26Hf7B6Cu1>Fe39Co47Hf7B6Cu1 in the order of their activity.更多还原