Compatibility of Columbium and Tantalum Tubing Alloys with Refluxing Potassium

Abstract

This report summarized a proposed mechanism, based on experimental results, that describes the oxygen accelerated corrosive attack of columbium and columbium alloys by potassium under refluxing conditions, involving the formation and solution of complex oxides. This mechanism may be expected to be applicable, in principle, to the other refractory metal - alkali metal systems as well. Cases of gettered and ungettered alloys are considered. The various reaction products, their roles in the corrosion process, and their disposition are discussed.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1966
Accession Number
ADA399902

Entities

People

  • Charles A. Barrett
  • Coulson M. Scheuermann

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Alkali Metals
  • Aluminum Oxides
  • Ceramic Materials
  • Chemistry
  • Corrosion Resistance
  • Films
  • Grain Boundaries
  • Grain Growth
  • Grain Size
  • Materials
  • Materials Processing
  • Oxide Films
  • Oxides
  • Precipitation
  • Refractory Metal Alloys
  • Refractory Metals
  • Resistance

Readers

  • Surface Engineering/Surface Coating Technology.
  • Systems Analysis and Design
  • Thermal Physics or Thermal Science.