Investigation of the Platinum-rich Portion of the Platinum-tantalum Phase Diagram

Author

Bob Dean Browning

Date of Award

8-1961

Document Type

Thesis

Degree Name

Master of Science

First Advisor

E. J. Myers, Captain, USAF

Abstract

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.

AFIT Designator

GAW-MECH 61-1

DTIC Accession Number

AD0269424

Comments

Designator as it appears on page: GAW/Mech. 61-1.

This digital version was scanned from the bound print original by the AFIT Academic Library staff.

Recommended Citation

Browning, Bob Dean, "Investigation of the Platinum-rich Portion of the Platinum-tantalum Phase Diagram" (1961). Theses and Dissertations. 5621.
https://scholar.afit.edu/etd/5621