In order to study high-frequency soft magnetic properties of Finemet amorphous alloy,the microstructural change and nanocrystallization under different heat treatment conditions were investigated by XRD and TEM. The c...In order to study high-frequency soft magnetic properties of Finemet amorphous alloy,the microstructural change and nanocrystallization under different heat treatment conditions were investigated by XRD and TEM. The crystallite size of α-Fe was calculated from the XRD pattern using the Scherrer formula,while the high frequency magnetic properties were measured at room temperature by TPS-200SA exchange tester. The results of XRD and TEM indicate that the nanocrystallization occurs at 500 ℃. When the annealing temperature increases to 560 ℃,the amorphous alloy becomes totally nanocrystallized and the crystallites distribute homogeneously,thus an excellent combination of soft magnetic properties is obtained.展开更多
基金Projects(0552nm028 04DZ05616) supported by Shanghai Science and Technology Committee, China
文摘In order to study high-frequency soft magnetic properties of Finemet amorphous alloy,the microstructural change and nanocrystallization under different heat treatment conditions were investigated by XRD and TEM. The crystallite size of α-Fe was calculated from the XRD pattern using the Scherrer formula,while the high frequency magnetic properties were measured at room temperature by TPS-200SA exchange tester. The results of XRD and TEM indicate that the nanocrystallization occurs at 500 ℃. When the annealing temperature increases to 560 ℃,the amorphous alloy becomes totally nanocrystallized and the crystallites distribute homogeneously,thus an excellent combination of soft magnetic properties is obtained.
