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.
Original language | English (US) |
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Pages (from-to) | 99-103 |
Number of pages | 5 |
Journal | Bulletin of Materials Science |
Volume | 21 |
Issue number | 1 |
DOIs | |
State | Published - 1998 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Mechanics of Materials