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Titolo:
MAGNETIC HARDENING OF MECHANICALLY ALLOYED NDFE12-XVX 1-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-2) AND THEIR NITRIDES
Autore:
TANG SL; WU CH; JIN XM; WANG BW; LI GS; DING BZ; CHUANG YC;
Indirizzi:
XIANGTAN UNIV,DEPT MECH ENGN XIANGTAN 411105 PEOPLES R CHINA CHINESE ACAD SCI,INST MET RES SHENYANG 110015 PEOPLES R CHINA CHINESE ACAD SCI,INT CTR MAT PHYS SHENYANG 110015 PEOPLES R CHINA
Titolo Testata:
Journal of magnetism and magnetic materials
fascicolo: 2, volume: 189, anno: 1998,
pagine: 202 - 206
SICI:
0304-8853(1998)189:2<202:MHOMAN>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Keywords:
MECHANICAL ALLOYING; THMN12-TYPE STRUCTURE COMPOUND; PERMANENT MAGNETIC PROPERTY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
S.L. Tang et al., "MAGNETIC HARDENING OF MECHANICALLY ALLOYED NDFE12-XVX 1-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-2) AND THEIR NITRIDES", Journal of magnetism and magnetic materials, 189(2), 1998, pp. 202-206

Abstract

The structure and permanent magnetic properties of isotropic powders of NdFe12-xVxNdelta compounds mere investigated by using mechanical alloying. It was found that heat treatment of as-milled powders at 700-900 degrees C resulted in the formation of Nd(Fe,V)(12) phase except for the sample with x = 1, for which the crystallization was not complete and a large amount of alpha-Fe(V) was present at temperatures lower than 750 degrees C. After nitrogenation, the volume expansion was about 5% and the Curie temperature enhancements were 140 to 160 degrees C. In NdFe12-xVxNdelta the values of T-c fall in the range 469-485 degrees C. It has been found that the intrinsic coercivities strongly increased with increasing V content. The maximum coercivity of H-i(c) = 10.96 kOe is achieved at 750 degrees C with x = 2.00. The difference between the coercivities of the mechanical alloyed Nd(Fe,V)(12)N-delta powders with different V content is attributed to their different crystallization behavior and phase stability during nitrogenation. (C) 1998 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 20:50:19