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Titolo:
Structure, phase transformation and magnetic properties of SmyFe100-1.5yC0.5y alloys prepared by mechanical alloying and re-milling
Autore:
Geng, DY; Zhang, ZD; Cui, BZ; Guo, ZJ; Liu, W; Zhao, XG; Zhao, T; Liu, JW;
Indirizzi:
Acad Sinica, Inst Met Res, Int Ctr Mat Phys, Shenyang 110015, Peoples R China Acad Sinica Shenyang Peoples R China 110015 yang 110015, Peoples R China Tianjin Inst Technol, Tianjin 300191, Peoples R China Tianjin Inst Technol Tianjin Peoples R China 300191 191, Peoples R China
Titolo Testata:
JOURNAL OF ALLOYS AND COMPOUNDS
fascicolo: 1-2, volume: 291, anno: 1999,
pagine: 276 - 281
SICI:
0925-8388(19990927)291:1-2<276:SPTAMP>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERMANENT-MAGNETS; SM; FE; R2FE14C; ND;
Keywords:
samarium iron carbides; magnetic properties; mechanical alloying;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Geng, DY Acad Sinica, Inst Met Res, Int Ctr Mat Phys, Shenyang 110015, Peoples R China Acad Sinica Shenyang Peoples R China 110015 15, Peoples R China
Citazione:
D.Y. Geng et al., "Structure, phase transformation and magnetic properties of SmyFe100-1.5yC0.5y alloys prepared by mechanical alloying and re-milling", J ALLOY COM, 291(1-2), 1999, pp. 276-281

Abstract

The structure, phase transformation and magnetic properties of SmyFe100-1.5y C-0.5y (y=10, 12, 14, 16, 18, 20) alloys prepared by mechanical alloying(MA) have been studied systematically. The Sm2Fe17Cx (Sm2Fe14C) phase tends to form when y is increased (decreased). For the same composition, the Sm2Fe17Cx phase is formed more easily when the annealing temperature T-n is lower. No Sm2Fe14C phase is observed in the Sm20Fe70C10 alloy. In other alloys, annealed between 650 degrees C and 950 degrees C, the Sm2Fe14C and Sm2Fe17Cx phases coexist under a certain condition. Re-milling and re-annealingproved to be suitable for improving the magnetic properties of the MA alloys. After annealing at 800 degrees C for 35 min, re-milling for I h and then re-annealing at 600 degrees C for 35 min, the value (BH)(max), = 10.6 MGOe has been achieved for the MA Sm14Fe79C7 alloy. After annealing at 800 degrees C for 35 min, the MA Sm20Fe70C10 alloy was re-milled for 1 h and then re-annealed at 550 degrees C for 2 h, resulting in the value of H-i(e) =7.96 kOe. (C) 1999 Elsevier Science S.A. All rights reserved.

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Documento generato il 27/09/20 alle ore 06:49:18