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Rhenium/Oxygen Interactions at Elevated Temperatures

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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.

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Authors and Affiliations

  1. NASA Glenn Research Center, Cleveland, Ohio, 44135

    N. S. Jacobson

  2. Chemistry Department, East Central University, Ada, Oklahoma, 74820

    D. L. Myers

  3. Ohio Aerospace Institute/NASA Glenn Research Center, Cleveland, Ohio, 44135

    D. Zhu

  4. Dynacs/NASA Glenn Research Center, Cleveland, Ohio, 44135

    D. L. Humphrey

Authors
  1. N. S. Jacobson
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  2. D. L. Myers
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  3. D. Zhu
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  4. D. L. Humphrey
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Jacobson, N.S., Myers, D.L., Zhu, D. et al. Rhenium/Oxygen Interactions at Elevated Temperatures. Oxidation of Metals 55, 471–480 (2001). https://doi.org/10.1023/A:1010355714642

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