ULTRA-HIGH COERCIVITY ND-FE-B PERMANENT-MAGNET ALLOY WITH SMALL ADDITION OF GA

Authors
AHMAD I DAVIES HA BUCKLEY RA
Citation
I. Ahmad et al., ULTRA-HIGH COERCIVITY ND-FE-B PERMANENT-MAGNET ALLOY WITH SMALL ADDITION OF GA, Materials letters, 20(3-4), 1994, pp. 139-142
Citations number
6
Categorie Soggetti
Material Science","Physics, Applied
Journal title
Materials letters → ACNP
ISSN journal
0167577X
Volume
20
Issue
3-4
Year of publication
1994
Pages
139 - 142
Database
ISI
SICI code
0167-577X(1994)20:3-4<139:UCNPAW>2.0.ZU;2-I
Abstract
A Nd-rich ternary alloy Nd18Fe76B6, which exhibits very high coercivit y (22 kOe) in the form of as-cast melt-spun ribbon, has been modified by substitution of 1 at% of Ga for Fe. A substantial enhancement of co ercivity to > 45 kOe resulted, although the remanence and energy produ ct were reduced in comparison with the ternary alloy. The coercivity i ncrease may be related, in part, to grain refinement promoted by Ga bu t the level of increase was such that other factors probably predomina ted.