Ordered Alloys of Gold-Palladium System. I. Electron Diffraction Study of Evaporated Au3Pd Films

Evaporated single crystal films of gold-palladium alloys were studied by electron diffraction, compositions of the alloys widely ranging from 10 to 60 atomic per cent palladium. An ordered phase with the Cu 3 Au type structure was found to exist in the region of composition around 25 atomic per cent palladium. The order-disorder transformation seems to occur at about 850°C in the films of this composition range.