Diffusion of Oxygen in Tungsten and some other Transition Metals

Abstract

Stringer and Rosenfield¹ have recently calculated some activation energies for diffusion of oxygen in transition metals, which were not otherwise available. One of these metals was tungsten. In a plot of activation energy versus melting point of the solvent, the authors attempted to show that tungsten and other metals dissolving less than about 1 per cent oxygen lay on a straight line through the origin; while those metals dissolving more than about 1 per cent oxygen fell on a straight line, which did not pass through the origin and which had a small negative slope. The line through the origin was supposed to be indicative of a normal lattice distortion mechanism and the other line an ionization mechanism.