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Rhenium/Oxygen Interactions at Elevated Temperatures

Journal article published in 2001 by N. S. Jacobson ORCID, D. L. Myers, D. Zhu, D. L. Humphrey
This paper is available in a repository.
This paper is available in a repository.

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Preprint: policy unknown
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Abstract

The oxidation of pure rhenium was examined from 600 to 1400°C in oxygen/argon mixtures. Linear weight-loss kinetics were observed. Gas pressures, flow rates, and temperatures were methodically varied to determine the rate-controlling steps. The reaction at 600 and 800°C appeared to be controlled by a chemical-reaction step at the surface; whereas the higher-temperature reactions appeared to be controlled by gas-phase diffusion of oxygen to the rhenium surface. Attack of the rhenium appeared along grain boundaries and crystallographic planes.