Mechanical alloying of Co–Cu powders

Abstract 

The aim of this work was to investigate two cobalt alloys, namely, the Co–20Cu and the Co–30Cr (atomic percentage), prepared by mechanical alloying, by using balls and Szegvari mills. The samples obtained were characterized by X-ray diffraction, differential scanning calorimetry, and chemical microanalysis. The main results for the Co–20Cu show a good agreement with previous work in terms of the corresponding lattice parameters values which are function of milling times, the milled mixtures show a nodular morphology. For the Co–30Cr, difference in X-ray patterns from the final samples were found as compared to other works. The particle size of the powders plays an important role in the alloys preparation.