HIGH TEMPERATURE OXIDATION RESISTANT COATINGS FOR TANTALUM BASE ALLOYS

Abstract

Aluminide and beryllide coatings were investigated for pure tantalum, a commercial Ta-10 W alloy, and a ternary alloy under development. Coatings were applied by dipping, packing, cold spraying, and vapor deposition. Oxidation resistance was evaluated by furnace testing, resistance heating, and flame testing. Internal hardening and diffusion effects were also studied. A Sn-Al coating was developed, which has excellent oxidation resistance for 10 hours to at least 3000 F. Evaluation was successfully extended to arc-plasma tests which also showed the feasibility of protecting Mo and W. A similar but minor effort investigation was performed with a Nb alloy which could be protected to 2500 F for at least 10 hours.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1961
Accession Number
AD0270008

Entities

People

  • Dean D. Lawthers
  • L. Sama

Organizations

  • Sylvania Electric Products

Tags

Communities of Interest

  • Advanced Electronics
  • Human Systems

DTIC Thesaurus Topics

  • Air Force
  • Alloys
  • Aluminum Coatings
  • Body Weight
  • Chemistry
  • Coatings
  • Films
  • Hardening
  • Hardness
  • High Temperature
  • Materials
  • Mechanical Properties
  • Metals
  • Optical Pyrometers
  • Oxidation Resistance
  • Refractory Metals
  • Tantalum Alloys

Fields of Study

  • Materials science

Readers

  • Surface Engineering/Surface Coating Technology.