Formation of Amorphous Alloys by the Mechanical Alloying for Cu-L and Ni-L Systems (L; IV Group Element)

Abstract

Crystalline powders of Ni or Cu and L(IV group element) in the composition ratio Ni(Cu) : L = 1 : 2 were mechanically alloyed by a laboratory ball mill in an inert atmosphere. The progress of the mechanical alloying was identified by X-ray diffraction. The milling time for Ni-L system was longer than that for Cu-L system until a amorphous state could be attained. Moreover, crystallization behavior was measured by differential thermal analysis for the mechanically alloyed materials. The crystallization temperature rised on going from Ti to Hf.