Microstructure of nanocrystalline Fe-Nb-Pr-B alloys produced by crystallization of amorphous phase

被引：14

作者：

Kojima, A ^{[1
]}

Ogiwara, F ^{[1
]}

Makino, A ^{[1
]}

Inoue, A ^{[1
]}

Masumoto, T ^{[1
]}

机构：

[1] TOHOKU UNIV,INST MAT RES,AOBA KU,SENDAI,MIYAGI 980,JAPAN

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1997年 / 226卷

关键词：

nanocrystalline mixed structure; crystallization; amorphous phase; iron-praseodyium-boron alloy; hard magnetic properties; high remanence;

D O I：

10.1016/S0921-5093(96)10677-8

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The crystallization behavior and magnetic properties of the melt-spun amorphous Fe88Pr7B5, Fe88Nb2Pr5B5 and Fe86Nb2Pr7B5 alloys were investigated. These alloys have a nanocrystalline structure consisting of bcc-Fe, Fe14Pr2B and remaining amorphous phases and exhibit rather good hard magnetic properties, H-i(c) of 210-270 kA m(-1), I-r of 0.93-1.23 T, after annealing for 180 s at 923-1023 K. The Fe88Nb2Pr5B5 alloy exhibits the highest (BN)(max) of 110 kJ m(-3) among the three alloys and has the fine nanocrystalline mixed structure with grain sizes of 10-20 nm. The fine grain size is presumably due to the high thermal stability of the remaining amorphous phase with enriched Nb concentrations. (C) 1997 Elsevier Science S.A.

引用

页码：520 / 525

页数：6

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