EVALUATION OF COATED REFRACTORY METAL FOILS.

Abstract

An extensive evaluation program was carried out to determine the capabilities of various commer cial coating vendors to coat effectively niobium and molybdenum alloy foils (0.006 in.). Two niobium based alloys (D36-Nb-10Ti-5Zr; B66-Nb-5Mo-5V-1Zr) and one molybdenum based alloy (TZM-Mo-0.5Ti-0.08Zr--0.02C) were included. Nine coating vendors participated in the program. Tests performed in the program were receiving inspection (metallography, weight change, gross effects, and microhardness), mechanical properties at room temperature, bend ductility, ductile-brittle transition temperature, cyclic oxidation resistance in a furnace with and without prestraining and in a plasmatorch flame at 5 and 760 Torr, diffusion rates, creep, and fatigue life. The results of these tests show that foils can be coated to provide oxidation resistance for periods of time up to 75 hours at 2500 F without gross loss in mechanical properties. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1963
Accession Number
AD0427764

Entities

People

  • A. R. Stetson
  • V. S. Moore

Tags

DTIC Thesaurus Topics

  • Alloys
  • Ductile Brittle Transition
  • Ductility
  • Fatigue Life
  • Mechanical Properties
  • Metals
  • Microhardness
  • Molybdenum
  • Molybdenum Alloys
  • Oxidation
  • Oxidation Resistance
  • Refractory Metals
  • Resistance
  • Test And Evaluation
  • Transition Temperature
  • Transitions

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Technical Research and Report Writing.
  • Thin Film Deposition Science.