The Oxygen Potential on the Scale Surface on Alloy at High Temperature Oxidationv

Abstract

The driving force of the oxide scale growth on alloy is the difference in the oxygen potentials between at the alloy/scale and the scale/atmosphere interfaces. When the mass transport in the oxide scale controls the growth of the oxide scale, we usually regard the oxygen potential at the scale/atmosphere interface as that of atmosphere. On the other hands, when the gas supply or the reaction controls the growth, the oxygen potential at the scale/atmosphere interface is different from that of atmosphere. This paper introduces the direct measurement for the oxygenpotential on the scale surface.