Effect of Ti and C additions on the microstructure and magnetic properties of Nd6Pr1Fe80B13 melt-spun ribbons

被引：46
作者：
Nagahama, D.
Ohkubo, T.
Miyoshi, T.
Hirosawa, S.
Hono, K. [1 ]
机构：
[1] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3050047, Japan
[2] NIMS, Tsukuba, Ibaraki 3050047, Japan
[3] NEOMAX Co Ltd, R&D Div, Osaka 6180013, Japan
来源：
ACTA MATERIALIA | 2006年 / 54卷 / 18期
基金：
日本学术振兴会;
关键词：
hard magnets; nanocomposite; melt spinning; atom probe; Nd2Fe14B;
D O I：
10.1016/j.actamat.2006.06.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have investigated the microstructure of Nd6Pr1Fe80-xTixB13-yCy (x = 0, 4; y = 0, 1) melt-spun ribbons using transmission electron microscopy (TEM) nd three dimensional atom probe (3DAP) analysis to correlate their hard magnetic properties with the microstructure. Optimally quenched and annealed Nd6Pr1Fe76B12Ti4C1 ribbon, which was composed of Nd2Fe14B grains of about 16 nm mean diameter separated by Fe3B grain boundary phase, showed a maximum energy product of 112 kJ/m(3) with coercivity of 510 kA/m. The addition of 4 at.% Ti significantly modified the solidification path by suppressing the formation of Nd2Fe23B3 phase and promoting the formation of Nd2Fe14B phase. TEM observations showed that the additions of Ti and C refined the microstructure, and 3DAP analysis indicated that the formation of TiC at the Nd2Fe14B grain boundary is the reason for the refined grain size and enhanced remanence. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：4871 / 4879
页数：9
相关论文
共 22 条
[1]   Nanocrystalline FeNdB permanent magnets with enhanced remanence [J].
Bauer, J ;
Seeger, M ;
Zern, A ;
Kronmuller, H .
JOURNAL OF APPLIED PHYSICS, 1996, 80 (03) :1667-1673
[2]   Magnetic and microstructure studies of boron-enriched (Nd0.95La0.05)11Fe76.5-xCoxTi2B10.5(x=0-15) melt-spun ribbons [J].
Chang, WC ;
Wang, SH ;
Chang, SJ ;
Chen, Q .
IEEE TRANSACTIONS ON MAGNETICS, 2000, 36 (05) :3312-3314
[3]   The effects of refractory metals on the magnetic properties of α-Fe/R2Fe14B-type nanocomposites [J].
Chang, WC ;
Wang, SH ;
Chang, SJ ;
Tsai, MY ;
Ma, BM .
IEEE TRANSACTIONS ON MAGNETICS, 1999, 35 (05) :3265-3267
[4]   Nd8Fe73Co5Hf2B12 strip cast alloy [J].
Chiriac, H ;
Marinescu, M ;
Castaño, FJ .
JOURNAL OF APPLIED PHYSICS, 2000, 87 (09) :5338-5340
[5]   PREPARATION AND MAGNETIC-PROPERTIES OF R-FE-B PERMANENT-MAGNET MATERIALS CONTAINING FE3B AS THE MAIN PHASE [J].
COEHOORN, R ;
DEWAARD, C .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1990, 83 (1-3) :228-230
[6]   NOVEL PERMANENT MAGNETIC-MATERIALS MADE BY RAPID QUENCHING [J].
COEHOORN, R ;
DEMOOIJ, DB ;
DUCHATEAU, JPWB ;
BUSCHOW, KHJ .
JOURNAL DE PHYSIQUE, 1988, 49 (C-8) :669-670
[7]   MAGNETOCRYSTALLINE ANISOTROPY OF FE3B,FE2B AND FE1.4CO0.6B AS STUDIED BY LORENTZ ELECTRON-MICROSCOPY, SINGULAR POINT DETECTION AND MAGNETIZATION MEASUREMENTS [J].
COENE, W ;
HAKKENS, F ;
COEHOORN, R ;
DEMOOIJ, DB ;
DEWAARD, C ;
FIDLER, J ;
GROSSINGER, R .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1991, 96 (1-3) :189-196
[8]   A THEORETICAL-STUDY OF INTERACTION EFFECTS ON THE REMANENCE CURVES OF PARTICULATE DISPERSIONS [J].
FEARON, M ;
CHANTRELL, RW ;
WOHLFARTH, EP .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1990, 86 (2-3) :197-206
[9]   Magnetic properties of Nd-Fe-B-Cr nanocrystalline composite magnets [J].
Hinomura, T ;
Nasu, S ;
Kanekiyo, H ;
Uehara, M ;
Hirosawa, S .
MATERIALS TRANSACTIONS JIM, 1997, 38 (12) :1106-1115
[10]   Structure and magnetic properties of Nd2Fe14B/FexB-type nanocomposites prepared by strip casting [J].
Hirosawa, S ;
Kanekiyo, H ;
Miyoshi, T ;
Murakami, K ;
Shigemoto, Y ;
Nishiuch, T .
IEEE TRANSACTIONS ON MAGNETICS, 2004, 40 (04) :2883-2885
123