Title :
A metallographic study of sintered SmCo5compacts
Author :
Croat, J.J. ; Lee, R.W.
Author_Institution :
General Motors Research Laboratories, Warren, Mich.
fDate :
9/1/1974 12:00:00 AM
Abstract :
Metallographic and microprobe analyses have been carried out on bulk SmCo5alloy and several series of SmCo5compacts. The phases present in SmCo5magnets and the disposition of these phases as a function of composition and heat treatment are reported. The results show that rapid and extensive interaction occurs between the sintering aid and the SmCo5grains during the sintering process. Studies of the homogenization process in SmCo5indicate that the hypostoichiometric alloy, i.e., less than 33.8 wt% Sm, is formed by Co pairs occupying Sm sites as originally hypothesized by Buschow and Van der Goot.
Keywords :
Powdered magnetic materials; Samarium-cobalt magnets; Boron alloys; Cobalt alloys; Etching; Heat treatment; Laboratories; Magnetic analysis; Magnets; Micromotors; Samarium alloys; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1974.1058378
