Accession Number:

ADA383327

Title:

An Evaluation of Coated Molybdenum and Columbium Alloys in High-Temperature Supersonic Airstreams

Descriptive Note:

Technical note

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CENTER

Personal Author(s):

Report Date:

1968-11-01

Pagination or Media Count:

32.0

Abstract:

An experimental study was made to investigate the oxidation behavior of four commercially coated refractory metal systems in supersonic airstreams Durak B and Vought IX coated TZM and Cr-Ti-Si-and Cr-MoSi2 coated Cb-752. Cyclic coating life and temperature data were obtained on 0.375-inch-diameter 0.953 cm blunt-nose models at surface temperatures from 2600 deg to 3000 deg F 1700 deg to 1920 deg K and at air stagnation pressures behind the shock wave of 0.03, 0.10, and 5.5 atmospheres. The oxidation behavior of uncoated molybdenum- and columbium-alloy models of the same size and shape was also studied in the same test environments.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE