Compositional evolution and magnetic properties of nanocrystalline Fe81.5Cu0.5Mo

2020-03-30 08:47:49

The Si amorphous annealing

责任者: Liu, T;Gao, YF;Xu, ZX;Zhao, ZT;Ma, RZ 单位: CENT IRON & STEEL RES INST, AMORPHOUS & RAPID QUENCHING CTR, BEIJING 100081, PEOPLES R CHINA. 来源出处: JOURNAL OF APPLIED PHYSICS, v 80, OCT 1 1996, p 3972- 3976 摘要: The amorphous alloy Fe81.5P12C3Cu0.5Mo0.5Si2.5 has been prepared and the crystallized alloy exhibits an ultrafine structure with a grain size of about 20 nm and excellent soft magnetic properties. The coercivity and the core loss as low as 5.7 A/m, 0.26 W/kp, respectively, and the maximum permeability as high as 10.2x10(4) at an optimal annealing temperature of about 360 degrees C were obtained. By means of x-ray diffraction, transmission electron microscope, and Mossbauer spectroscopy measurements, microstructures of the allay were investigated as a function of the annealing temperature. The primary crystallization produces ultrafine grains of alpha-Fe(Si) solid solution with a grain size of about 20 nm precipitated in the residual amorphous matrix. The Si in the cu Phase was estimated near to be completely disorder ranged and the Si concentration was determined to be about 2%-5%. The Fe3P phase appears in the residual amorphous phase upon annealing ar 420 degrees C. (C) 1996 American Institute of Physics. 关键词: backbone dynamics; glutathione binding; human macrophage migration inhibitory factor; structure inhibitory factor; structure; ULTRAFINE GRAIN-STRUCTURE; FE73.5CU1NB3SI13.5B9 ALLOY; MOSSBAUER-SPECTROSCOPY; AMORPHOUS PHASE; CRYSTALLIZATION MOSSBAUER-SPECTROSCOPY; AMORPHOUS PHASE; CRYSTALLIZATION