A DETAILED MORPHOLOGICAL-STUDY ON THE MAGNETIC FINE PARTICLES PRODUCED BY HYDROGEN ABSORPTION DESORPTION PROCESS

In this paper, we report a detailed morphological study and analysis p erformed on finely powdered magnetic alloy based on rare earth-transit ion metals, produced by hydrogen absorption-desorption cycles. We have analyzed the morphology of these particles by computing all the requi red morphological descriptors. The size of these particles ranges from 5 to 40 mu m. The values of the morphological descriptors lie very cl ose to those corresponding to adipic acid powders produced by comminut ion which are reported in the literature. The main advantage of the hy drogen absorption-desorption process over the conventional powder prod uction route (ball milling) is that the particles do not undergo oxida tion.