Calorimetric study of solid state reactions

Abstract

We examine the effects of atomic mobility on solid state amorphization reactions by comparing reactions in Ni/ZrxTi1-xcomposites as the Zr concentration, x, is varied. X-ray diffraction and differential scanning calorimetry are utilized to study the growth of amorphous phases. Differences in solid state reactions in these systems can be attributed to the size difference in the Zr and Ti atoms, and resulting variations in atomic mobilities. At low temperatures (300 K < T < 650 K) in the Ni-ZrxTi1-x system we observe a direct dependence of the rate of solid state reaction on Zr concentration. © 1993, Walter de Gruyter GmbH.