Date of Award
Master of Science
E. J. Myers, Captain, USAF
The Pt-Ta binary system was investigated at two isotherms;1000°C and 1500°C, and at eleven alloy compositions in the range of 50 to 100 atomic percent platinum. The alloys were examined by x-ray diffraction and metallography. Three intermetallic compounds, Pt2Ta, Pt3Ta, and Pt4Ta were found to exist in this composition range. The Pt4Ta intermetallic appeared only at the 1500°C isotherm. Platinum dissolved tantalum substitutionally to 90 atomic percent at 1500 °C and to approximately 80 atomic percent at 1000 °C.
DTIC Accession Number
Browning, Bob Dean, "Investigation of the Platinum-rich Portion of the Platinum-tantalum Phase Diagram" (1961). Theses and Dissertations. 5621.