Effect of Milling in Hydrogen and Vacuum Treatment on the Phase Composition of the SmCo5 Alloy

I.I.Bulik,
 
A.M.Trostyanchin,
 
P.Ya.Lyutyi
 

Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2013, #07/08
http://www.materials.kiev.ua/article/860

Abstract

It is shown that the phase composition of the industrial ferromagnetic КС37 alloy depends on the conditions of milling in hydrogen and subsequent heat treatment in vacuum. Treatment parameters (hydrogen pressure during saturation and milling of the alloy, mill rotation frequency, milling time, vacuum degassing temperature) that allow a wide variation in the phase composition of the alloy and in the quantitative ratio of the phases have been established. Depending on the above-mentioned conditions, several variants of phase compo¬sition involving SmCo5, Sm2Co17, Sm2Co7 and Sm5Co19 can be obtained.


HYDROGEN, MAGNETIC MATERIAL, MECHANOCHEMICAL MILLING, PHASE TRANSFORMATION, SAMARIUM-COBALT ALLOY, X-RAY DIFFRACTION