Effect of Al additives and annealing time on microstructure and corrosion resistance of Nd-Fe-B alloys

Authors
Filip, O El-Aziz, AM Hermann, R Mummert, K Schultz, L
Citation
O. Filip et al., Effect of Al additives and annealing time on microstructure and corrosion resistance of Nd-Fe-B alloys, MATER LETT, 51(3), 2001, pp. 213-218
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS LETTERS
ISSN journal
0167577X → ACNP
Volume
51
Issue
3
Year of publication
2001
Pages
213 - 218
Database
ISI
SICI code
0167-577X(200111)51:3<213:EOAAAA>2.0.ZU;2-G
Abstract
The corrosion behavior and the microstructure of thermally treated stoichio metric Nd-Fe-B alloys with 1-3 at.% Al additions have been investigated. Th e additions improve the corrosion resistance in acid environment as well as in humid air at 150 degreesC whereas the smallest amount of Al resulted in the lowest corrosion rate. Large annealing times were found to increase th e corrosion resistance in acid environment additionally, whereas it deterio rates the corrosion resistance in humid air. (C) 2001 Elsevier Science B.V. All rights reserved.