Atmospheric and Milling-Device Effects on the Activation Energy for Crystallization of a Partially Amorphized Ni-Mo Alloy

The Ni-Mo sustem processed through mechanical alloying (MA) technique has ben widely investigated. For the composition Mo-47 at % Ni partially amorphous phase was obtained after 36 h miling time. Fe contanination was detected in then samples milled in a stainless Steel container. Longer milling times have an important effect in the crystallization temperatura. The peak temperatura was shifted to lower temperaturas as increases the milling time. Millimng device. Milling container. Fe and oxygen have an important effect in the rate of amorphization and in the activation energy (Q) values for samples milled under air atmosphere are lower yhan those observed in samples milled in argón atmosphere