Accession Number:

ADA129493

Title:

Erosive Effects of Various Pure and Combustion Generated Gases on Metals

Descriptive Note:

Final rept. 1 Jan-30 Nov 1980

Corporate Author:

PRINCETON UNIV NJ DEPT OF MECHANICAL AND AEROSPACE ENGINEERING

Personal Author(s):

Report Date:

1982-02-01

Pagination or Media Count:

29.0

Abstract:

The erosive effect of nitrogen-oxygen mixtures on 4340 steel nozzles has been studied using gas pressure transients produced by a ballistic compressor. Attention has been directed at threshold phenomena on both uncoated and coated specimens. Samples have been studied using scanning electron microscopy, Auger spectroscopy, mass loss and light microscopic methods. In all cases mass loss was associated with a melting of the nozzle material and material removal by ablation. An attempt has been made to produce some resistive thin film gauges to study the time-temperature history of a simulated eroding surface. Preliminary experimental data is presented.

Subject Categories:

  • Metallurgy and Metallography
  • Rocket Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE