Constitutional studies of molybdenum-palladium alloys using ultra-rapidly solidified samples

Phase relationships in the system Mo-Pd in the temperature range 880–1100°C were re-investigated using ultra-rapidly solidified samples. The finely divided microstructures produced using this technique were found to achieve equilibrium on annealing much more rapidly than conventionally prepared materials. Optical microscopy, X-ray diffraction methods and scanning and analytical electron microscopy were used for phase characterization. The solubility limits of the molybdenum-rich and palladium-rich terminal solid solutions were established. No intermediate phases were found at the temperatures investigated.