Accession Number:

AD0269424

Title:

INVESTIGATION OF THE PLATINUM-RICH PORTION OF THE PLATINUM-TANTALUM PHASE DIAGRAM

Descriptive Note:

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1961-08-01

Pagination or Media Count:

71.0

Abstract:

The Pt-Ta binary system was investigated at two isotherms 1000 and 1500 C, and at 11 alloy compositions in the range of 50 to 100 at- Pt. The alloys were examined by x-ray diffraction and metallography. Three intermetallic compounds, Pt2Ta, Pt3Ta, and Pt4Ta were found to exist in this com osition range. The Pt4Ta intermetallicAPPEARED ONLY AT THE 1500 C isotherm. Pt dissolved Ta substitutionally to 90 at- at 1500 C and to approximately 80 at- at 1000 C. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE