Journal article
Effect of annealing on the microstructure of sintered Nd-Fe-B magnets
Abstract
A transmission electron microscopy study of sintered Nd-Fe-B magnets after annealing above 650 °C shows the formation of a thin intergranular Nd-rich layer extending to pockets of polycrystalline fcc Nd crystals. The grain boundary phase acts as a pinning site for the magnetic domain walls and is necessary for good magnetic hardening. On the other hand, the Nd1+εFe4B4 phase is an unavoidable product of the sintering process but need not be …
Authors
Mishra RK; Chen JK; Thomas G
Journal
Journal of Applied Physics, Vol. 59, No. 6, pp. 2244–2246
Publisher
AIP Publishing
Publication Date
March 15, 1986
DOI
10.1063/1.336366
ISSN
0021-8979