【作者】 程为智； 赵恒和； 董心权； 何开元； 吴跃中；

【Author】 CHENG Li-zhi;ZHAO Heng-he;DONG Xin-quan;HE Kai-yuan;WU Yue-zhong Department of Materials Science and Engineering Northeastern University, Shenyang, 110004, China; Engineering Department SHENYANG HUAYUAN KAIMA Vehicle Co. LTD. Shenyang, 110023, China

【机构】 东北大学材料科学与工程系； 沈阳华源凯马车辆有限公司技术部；

【摘要】 报道了用旋转水淬法制备直径130μm±2μmFe₇₈Si₉B₁₃冰晶合金丝,其样品DSC 测量表明,淬态样品在加热过程分别出现三个放热峰,峰温分别为788K、810K、852K。淬态样品分别经523K、573K、673K、793K,30min的热处理后,其磁阻抗值△V/V=[V（0）-V(70×10³/4 πAm^-1)]/V(70×10³/4 πAm^-1),随加热温度的升高,开始增大,当达673K时,样品△V/V达100%,随后加热温度升到793K时,△V/V值低于淬态样品。淬态样品分别通入200mA、400mA、600mA,30min 直流电加热处理后,△V/V随外加直流磁场的变化与加热炉热处理样品相似。淬态样品通入600mA×30min 电流加热处理后,△V/V高达120%。更多还原

【Abstract】 The magneto-impedance effect （MI） of the amorphous Fe₇₈Si₉B₁₃ wires, subjected to annealing in a furnaceor the DC current through the wires thermal treatment, has been studied. The MI ratio of the experimental samples atthe driving current frequency f=1 MHz, I=9.6mA is defined as ΔV/V=[V（0）-V(70×10³/4πAm^-1)]/V(70×10³/4πmA^-1).With the increase of annealing temperature from 523K to 793K the ΔV/V value of the samples increases at first, thenreaches 100% at 673K for 30min and finally decreases, but the crystallization occurs at the same time. The DC currentannealing is carried out using the DC current through the sample wires of 200、400、600mA, respectively, for 30min.The ΔV/V value of the sample current-thermally treated at 600mA for 30min reaches 120%.更多还原