High-coercivity sintered Nd14.5Dy1.5Fe68Co5Al1.5Cr2B7.5 permanent magnet

被引：1

作者：

Szymura, S

Wyslocki, JJ

Bala, H

Rabinovich, YM

机构：

[1] Czestochowa Tech Univ, Inst Phys, PL-42200 Czestochowa, Poland

[2] Czestochowa Tech Univ, Dept Chem, PL-42200 Czestochowa, Poland

[3] Metallotherm Co Ltd, Moscow 105094, Russia

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1998年 / 52卷 / 02期

关键词：

Nd-Fe-B-type magnets; microstructure; magnetic properties; corrosion resistance;

D O I：

10.1016/S0254-0584(98)80015-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effect of 1.5 at.% Al and 2.0 at.% Cr additions on microstructure, magnetic properties, thermal stability and corrosion resistance of (Nd,Dy)-(Fe,Co)-B sintered magnet have been studied. It is shown that simultaneous substitution of these elements for Fe in (Nd,Dy)-(Fe,Co)-B magnet causes significant improvement in coercivity and thermal stability; maximum operating temperature up to 473 K may be possible. The corrosion resistance in acid solution and atmospheric environment is also significantly improved by blocking the selective oxidation of the Nd-rich phase owing to the formation of (Nd,Dy)-(Co,Al,Fe)and (Nd,Dy))-(Fe,Cr,Co) phases. (C) 1998 Elsevier Science S.A.

引用

页码：147 / 151

页数：5

共 48 条

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