MEASUREMENTS ON PERMANENT MAGNETS MADE FROM MISCH METAL-COBALT ALLOY POWDERS

被引：10

作者：

STRNAT, KJ

HOFFER, GI

OLSON, JC

KUBACH, RW

机构：

[1] University of Dayton, Dayton, Ohio.

[2] U.S. Air Force Materials Laboratory (MAYE), Wright-Patterson Air Force Base, Dayton, Ohio.

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1968年 / MAG4卷 / 03期

关键词：

D O I：

10.1109/TMAG.1968.1066281

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Powders of a misch metal-cobalt alloy of type (MM)Co5 were prepared and consolidated in various ways to study the effects of particle size, plastic deformation during milling, and pressure applied during compacting on the permanent magnet properties. Vibration grinding yields particles with high coercive force (MHc = 4180 Oe) but which align very poorly in a field. Mortar-ground powders have high magnetic anisotropy combined with much lower, but strongly particle-size dependent Hc. Ballmilling, a method suitable for production in quantity, constitutes a satisfactory compromise. Pressing ballmilled powder in a field with 3400 kg/cm2 pressure and no binder gave optimum results. A magnet having MHc = 2010 Oe, BHc = 1620 Oe, Br = 4060 G, and (BH)max= 2.34 MG· Oe was obtained. Details of the static and recoil behavior for this magnet are reported. © 1968, IEEE. All rights reserved.

引用

页码：255 / &