The Evaluation of High Temperature Materials Systems With an Arc-Plasma-Jet

Abstract

A small arc-plasma-jet was suitably modified and utilized for the evaluation and screening of high temperature materials at heat flux levels ranging from 10 to 500 Btu/sq. ft-sec. A 'standard' evaluation procedure was employed to characterize a number of systems representing ablating, insulating, and heat sink type materials. Results of these tests are presented in terms of weight loss, density change, depth and volume of erosion, and front and back surface temperatures. A metallographic analysis of coating failures in the XLR-99 thrust chamber of the X-15 research aircraft and the subsequent development of a thermal shock test with the plasma-jet for sprayed ceramic coatings are discussed. The results of an extensive evaluation of protective coatings and the field test verification of these results are presented. Preliminary tests leading to the development of a dynamic oxidation test are discussed and the results of arc-plasma-jet tests of five silicide coatings on Mo-1/2% Ti are presented.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1964
Accession Number
AD0604418

Entities

People

  • Howard E. Smith
  • John C. Wurst

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Ceramic Materials
  • Chemical Synthesis
  • Chemistry
  • Composite Materials
  • High Temperature
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Resins
  • Standards
  • Surface Temperature
  • Test And Evaluation

Readers

  • Aerospace Test and Evaluation
  • Thermal Physics or Thermal Science.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics