ユン　キヨル   Kyyoul Yun   尹　己烈    所属   追手門学院大学  理工学部 電気電子工学科    職種   教授
言語種別	英語
発行・発表の年月	2023/06
形態種別	論文
査読	査読あり
招待論文	招待あり
標題	Magnetic properties of a high-density iron dust core without binders
執筆形態	代表編著
掲載誌名	Energy Reports
掲載区分	国外
出版社・発行元	Elsevier BV
巻・号・頁	9,pp.1-10
担当区分	筆頭著者,最終著者,責任著者
著者・共著者	Kyyoul Yun,Yuuta Arai,Takayuki Yoshida
概要	Iron dust cores produced from insulated iron particles via the powder metallurgy pressure-forming process are suitable for small motor cores, reactor cores, and inductors because of their high shape flexibility. However, the dust core's magnetic properties are inferior to those of conventional laminated cores because the insulation materials and silicon resins between iron particles to reduce eddy current losses degrade the magnetic properties of the core. Unfortunately, there is no researches of the iron dust cores without binders such as resin to improve the magnetic properties. Therefore, this paper investigates the magnetic properties of iron dust cores without binders. Assessments revealed that the dust core of gas-atomized iron powder with an average particle size of 49 mu m had the best magnetic properties. On further assessments, while the insulation layer's thickness was around 60 nm, the density of gas atomized iron powder core was over 7.6 g/cm(3). At 50 Hz and 1 kHz, DC hysteresis iron losses and eddy current loss of 49 mu m gas atomized iron dust cores without a binder showed lower values than those of the conventional powder core with a binder. (c) 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).