• Shashank Priya

      Articles written in Bulletin of Materials Science

    • Alloy-oxide equilibria in the system Pt-Rh-O

      K T Jacob Shashank Priya Yoshio Waseda

      More Details Abstract Fulltext PDF

      The composition of Pt-Rh alloys that co-exist with Rh2O3 in air have been identified by experiment at 1273 K. The isothermal sections of the phase diagram for the ternary system Pt-Rh-O at 973 K and 1273 K have been computed based on experimentally determined phase relations and recent thermodynamic measurements on Pt1−XRhX alloys and Rh2O3. The composition dependence of the oxygen partial pressure for the oxidation of Pt1−XRhX alloys at different temperatures, and temperature for the oxidation of the alloys in air are computed. The diagrams provide quantitative information for optimization of the composition of Pt1−XRhX alloys for high temperature application in oxidizing atmospheres.

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