OXIDATION OF NICKEL AND COBALT-BASE SUPERALLOYS

Abstract

This report presents information dealing with the oxidation of nickel- and cobalt-base superalloys. All of the superalloys will oxidize at high temperatures when oxygen is present in the enveloping atmosphere. The rate of oxidation depends upon alloy composition, temperature, oxygen concentration, oxides formed, diffusion rates of the metals in both base metal and oxide, diffusion rate of oxygen in the oxide, solubility of oxygen in the matrix, and a host of other variables. The effects of oxidation can be beneficial or they can be harmful. The first section of this report deals with the fundamentals of the oxidation of Ni-Cr and Co-Cr alloys. Subsequent sections discuss general surface oxidation, intergranular oxidation, other subsurface oxidation, and the effect of stress on the rate of oxidation. Numerous specific alloys are mentioned in the report; as an aid to the reader, the appendix contains an alloy index of the alloys mentioned in the report along with the compositions of the alloys, and the pages on which mention of the alloys is made.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1965
Accession Number
AD0614707

Entities

People

  • C. H. Lund
  • H. J. Wagner

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Body Weight
  • Chemical Synthesis
  • Chemistry
  • Chromium
  • Chromium Alloys
  • Ferrium
  • Governments
  • Material Degradation Processes
  • Materials
  • Materials Engineering
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Physical Metallurgy
  • Refractory Metals
  • Solid Solutions

Fields of Study

  • Materials science

Readers

  • Business Analytics
  • Powder metallurgy of Titanium alloys.
  • Surface Engineering/Surface Coating Technology.