Codeposition of Elements in Diffusion Coatings by the Halide-Activated Pack Cementation Method

Abstract

The codeposition of two or more elements in a halide-activated cementation pack is inherently difficult because of large differences in the thermodynamic stabilities for their volatile halides. However, through a computer-assisted analysis of the pack equilibria, combinations of suitable masteralloys and activator salts can be identified. Codeposition of Chromium plus aluminum or Cr plus Silicon by pack cementation has yielded diffusion coatings with excellent resistance to high-temperature oxidation/corrosion for a wide range of alloy substrates.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1991
Accession Number
ADA242860

Entities

People

  • Mark A. Harper
  • Robert A. Rapp
  • Robert Bianco

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Binary Alloys
  • Body Weight
  • Chemical Compounds
  • Chemical Synthesis
  • Chemical Vapor Deposition
  • Chemistry
  • Coatings
  • Engineering
  • Materials
  • Materials Engineering
  • Materials Science
  • Mixtures
  • Oxidation Resistance
  • Pack Cementation
  • Partial Pressure
  • Solid Solutions
  • Turbines

Readers

  • Surface Engineering/Surface Coating Technology.