Hydrogen decrepitation as a method of powder preparation of a 2:17-type, Sm(Co, Cu, Fe, Zr)8.92 magnetic alloy

Authors :: Kianvash, Abbas
Harris, I. R.
Source :: Journal of Materials Science; February 1985, Vol. 20 Issue: 2 p682-688, 7p
Publication Year :: 1985
Abstract: The present work has shown that hydrogen decrepitation of a 2:17-type Sm (Co<subscript>0.673</subscript> Cu<subscript>0.080</subscript>Fe<subscript>0.222</subscript>Zr<subscript>0.025</subscript>)<subscript>8.92</subscript> alloy is a very rapid and convenient means of producing powdered material for the production of polymer-bonded permanent magnets. The magnets made from the hydrogen decrepitated powder (average particle size ~100µm) exhibited improved demagnetization loop shapes, higher intrinsic coercivities and improved elevated temperature stability when compared with the magnets produced from the standard milled powder material (average particle size ~40µm). These differences in properties have been related to the differences in the character of the powders produced by the two methods of decrepitation.

Full Text Access

Tools