DocumentCode
965532
Title
Microstructure and magnetic properties of Fe-Cr-Co alloys
Author
Okada, Masuo ; Thomas, Gareth ; Homma, Motofumi ; Kaneko, Hideo
Author_Institution
University of California, Berkeley
Volume
14
Issue
4
fYear
1978
fDate
7/1/1978 12:00:00 AM
Firstpage
245
Lastpage
252
Abstract
The microstructures of an Fe-31wt%Cr-23wt%Co ductile permanent magnet alloy after isothermal aging, thermomagnetic treatment, and step aging have been characterized by transmission electron microscopy and by measurement of the Curie temperature. Isothermal aging itself produces the undesirable microstructure. Aging at 600°C develops the magnetic chromium-rich phase. Aging at 600°C produces a nonmagnetic chromium-rich phase dispersed within the iron-rich phase. The effect of thermomagnetic treatment on the microstructure of the alloy is discussed in comparison with that of Alnico alloys. Step aging produces the deskable microstructure, viz., the elongated ferromagnetic phase imbedded in the paramagnetic phase.
Keywords
Magnetic thermal factors; Permanent magnet materials; Aging; Chromatic dispersion; Isothermal processes; Magnetic force microscopy; Magnetic properties; Microstructure; Paramagnetic materials; Permanent magnets; Temperature; Transmission electron microscopy;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1978.1059752
Filename
1059752
Link To Document