Kim, Yoon B. Jang, D. H. Seok, H. K. Kim, K. Y. 2024-01-21T01:06:02Z 2024-01-21T01:06:02Z 2021-09-05 2007-03-25 0921-5093 https://pubs.kist.re.kr/handle/201004/134523 Toroid-shaped Fe-base amorphous powder cores were prepared from Fe-Si-B amorphous powder by gas atomization and subsequent cold pressing using organic and inorganic binders, respectively. The characteristics of gas-atomized Fe-Si-B amorphous powder and high-frequency magnetic properties of the cores were investigated. Fe-Si-B amorphous powder, exhibiting good soft magnetic properties with a saturation magnetization of 125 emu/g and a coercivity of 0.4 Oe, were successfully produced by gas atomization in the particle size range below 75 mu m. The Fe-Si-B amorphous powder cores using phenol resin as a binder exhibit stable permeability in the high-frequency range up to 10 MHz, showing excellent high-frequency characteristics and superior dc-bias properties with a "percent permeability" of more than 97% at H=50 Oe. Uniform insulation by phenol resin and good soft magnetic properties of gas-atomized Fe-Si-B amorphous powder lead to the excellent high-frequency characteristics of the cores. Permalloy powder used as a metallic binder enables the fabrication of Fe-Si-B amorphous powder cores by cold pressing. Permalloy powder increases the permeability of the cores, but deteriorates the high-frequency dependence of the permeability at high content. (c) 2006 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA METALLIC GLASSES Fabrication of Fe-Si-B based amorphous powder cores by cold pressing and their magnetic properties Article 10.1016/j.msea.2006.02.394 1 MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.449, pp.389 - 393 MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 449 389 393 scie scopus 000245477800088 2-s2.0-33847180815 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Science & Technology - Other Topics Materials Science Metallurgy & Metallurgical Engineering Article; Proceedings Paper METALLIC GLASSES Fe-based amorphous powder core gas atomization cold pressing binder high-frequency characteristics