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      https://www.ias.ac.in/article/fulltext/boms/021/01/0099-0103

    • Keywords

       

      System Pt-Rh-O; phase diagram; thermodynamic properties; Pt-Rh alloys; oxidation; stability field

    • Abstract

       

      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.

    • Author Affiliations

       

      K T Jacob1 Shashank Priya1 Yoshio Waseda1 2

      1. Department of Metallurgy, Indian Institute of Science, Bangalore - 560 012, India
      2. Research Centre for Metallurgical Process Engineering, Institute for Advanced Materials Processing, Tohoku University, Sendai - 980-77, Japan
    • Dates

       
  • Bulletin of Materials Science | News

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