Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Glass-forming ability, crystallized structure and magnetic properties of Fe67Co9.5Nd3Dy0.5B20 glassy alloy with large supercooled liquid region
Autore:
Zhang, W; Matsusita, M; Li, CF; Kimura, H; Inoue, A;
Indirizzi:
Japan Sci & Technol Corp, Inoue Superliquid Glass Project, Exploratory ResAdv Technol, Sendai, Miyagi 9820807, Japan Japan Sci & Technol Corp SendaiMiyagi Japan 9820807 iyagi 9820807, Japan Tohoku Univ, Mat Res Inst, Sendai, Miyagi 9808577, Japan Tohoku Univ Sendai Miyagi Japan 9808577 st, Sendai, Miyagi 9808577, Japan
Titolo Testata:
MATERIALS TRANSACTIONS
fascicolo: 10, volume: 42, anno: 2001,
pagine: 2059 - 2063
SICI:
1345-9678(200110)42:10<2059:GACSAM>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
B AMORPHOUS-ALLOYS;
Keywords:
iron-cobalt-neodymium-dysprosium-boron alloy; supercooled liquid region; melt-spinning; thick sheet; glass forming ability; crystallized structure; remaining glassy phase; nanocomposite permanent magnet;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Zhang, W Japan Sci & Technol Corp, Inoue Superliquid Glass Project, Exploratory ResAdv Technol, Sendai, Miyagi 9820807, Japan Japan Sci & Technol Corp Sendai Miyagi Japan 9820807 0807, Japan
Citazione:
W. Zhang et al., "Glass-forming ability, crystallized structure and magnetic properties of Fe67Co9.5Nd3Dy0.5B20 glassy alloy with large supercooled liquid region", MATER TRANS, 42(10), 2001, pp. 2059-2063

Abstract

The glass-forming ability, thermal stability and magnetic properties have been investigated for a Fe67Co9.5Nd3Dy0.5B20 glassy alloy with a large supercooled liquid region of 48 K prepared by the melt-spinning technique. The glassy phase is formed in the wide sheet thickness range from 20 to 250 mum. The glass transition temperature (T-g), crystallization temperature (T-X), supercooled liquid region (DeltaT(X) = T-X - T-g) and heat of crystallization (DeltaH(c)) remain almost unchanged in the thickness range below 250 mum, and then the DeltaH(c) gradually decreases with further increasing sheet thickness. The crystallized nanocomposite structure consists of Fe3B, alpha -Fe, Nd2Fe14B and remaining glassy phase, and their average grain sizes are about 25 nm annealed at 903 K for 420 s. The remanence (B-r), coercivity (H-i(c)), and maximum energy product (B H)(max) are 1.26 T, 235 kA/m, and104 kJ/m(3), respectively, for the sheet of 250 mum in thickness annealed at 903 K for 420 s. The hard magnetic properties remain almost unchanged inthe thickness range below 250 mum, and decrease gradually in the sheets with thicknesses above 250 mum.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 11:17:51