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Titolo:
PHASE-TRANSFORMATION AND MAGNETIC-PROPERTIES OF MECHANICALLY ALLOYED NDFE12-XMOXNY
Autore:
TANG SL; JIN XM; WANG BW; JIN ZQ; ZHANG SY; DU YW;
Indirizzi:
NANJING UNIV,NATL LAB SOLID STATE MICROSTRUCT NANJING 210093 PEOPLES R CHINA NANJING UNIV,DEPT PHYS NANJING 210093 PEOPLES R CHINA CHINESE ACAD SCI,INST MET RES SHENYANG 110015 PEOPLES R CHINA XIANGTAN UNIV,DEPT ENGN MECH HUNAN 411105 PEOPLES R CHINA
Titolo Testata:
Journal of alloys and compounds
fascicolo: 2, volume: 279, anno: 1998,
pagine: 229 - 232
SICI:
0925-8388(1998)279:2<229:PAMOMA>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Keywords:
RARE EARTH IRON COMPOUND; THMN12-TYPE COMPOUND; MECHANICAL ALLOYING; HARD MAGNETIC PROPERTIES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
8
Recensione:
Indirizzi per estratti:
Citazione:
S.L. Tang et al., "PHASE-TRANSFORMATION AND MAGNETIC-PROPERTIES OF MECHANICALLY ALLOYED NDFE12-XMOXNY", Journal of alloys and compounds, 279(2), 1998, pp. 229-232

Abstract

The structure and permanent magnetic properties of isotropic powders of NdFe12-xMox (1 less than or equal to x less than or equal to 2) andtheir nitrides were investigated by using mechanical alloying. It wasfound that heat treatment of as-milled powders at 850 similar to 900 degrees C resulted in the formation of the Nd(Fe,Mo)(12) phase. The metastable Nd(Fe,Mo)(7) phase and a large amount of alpha-Fe were present at 800 degrees C. After nitrogenation, the volume expansion of NdFe12-xMox phases was about 3.5% and the Curie temperature of the samples was enhanced by 157 similar to 207 degrees C. In NdFe12-xMoxNy compounds the values of T-c fall in the range of 272 similar to 75 degrees C. It has been found that the intrinsic coercivities strongly increased with increasing Mo content. The maximum coercivity, H-i(c)=7.8 kOe, was achieved at 850 degrees C for the sample with x=2. The difference between the coercivities of the mechanically alloyed Nd(Fe,Mo)(12)N-y powders with different Mo content was attributed to their different crystallization behavior. (C) 1998 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 20:12:42