Solid State Amorphizing Reaction of Al₃₀Ta₇₀ Alloy Powders by the Rod Milling Technique

Abstract

A rod-milling technique has been investigated for producing Al₃₀Ta₇₀ amorphous alloy powders. To follow the amorphization reaction, the rod-milled powders were characterized by X-ray diffraction, differential thermal analysis, optical microscopy, scanning electron microscopy, electron probe microanalysis and chemical analysis. The results obtained by rod-milling were compared with those from a conventional ball-milling technique. The rod-milled Al₃₀Ta₇₀ amorphous alloy powders have high amorphization rate, high thermal stability and a low contamination content.