作者:Li Tao、Minglong Zhong、Sajjad Ur Rehman、Weicheng Xie、Renhui Liu、Qiulan Tan、Zhenchen Zhong
DOI:10.1016/j.physb.2020.412610
日期:2021.1
Co7Hf ribbons have been prepared by melt spinning technique. The effects of wheel speeds on the Structures and magnetic properties were investigated. At wheel speed of 35 m/s, the Co7Hf ribbons show the best intrinsic coercivity, remanence and maximum energy density, 2.0 kOe, 53 emu/g and 4.7 MGOe, respectively. XRD and TEM results show that Co7Hf ribbons are mainly composed of Co7Hf phase and Co phase
已经通过熔融纺丝技术制备了Co 7 Hf带。研究了轮速对结构和磁性能的影响。在35 m / s的轮速下,Co 7 Hf碳带表现出最佳的固有矫顽力,剩磁和最大能量密度,分别为2.0 kOe,53 emu / g和4.7 MGOe。XRD和TEM结果表明,Co 7 Hf带主要由Co 7 Hf相和Co相组成。DSC和TEM结果表明,高轮速下出现非晶相。晶粒细化和非晶相的形成是改变磁性的主要原因。同时,Co 7具有出色的高温稳定性观察到带。在27–500°C的范围内,Co 7 Hf色带的剩磁温度系数(α)和矫顽力(β)分别为-0.11%/°C,-0.19%/°C。