Structural Property Effects for Platinum Modified Aluminide Coatings.

Abstract

Aluminide and platinum modified aluminide coatings have proven to be effective and economical means of protecting gas turbine components from oxidative and corrosive attack. In order to maintain coating integrity, the response of the coating-integrity, the response of the coating-substrate system to strains imposed by thermal expansion mismatch and external stresses must be known. Selected coating systems were examined on an IN 738 substrate to determine the ductile to brittle transition temperature (DBTT) and the residual strains caused by the presence of the coating. The coating morphology was examined by scanning electron microscopy and electron probe microanalysis, and correlations between coating microstructure and DBTT were established.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1986
Accession Number
ADA175323

Entities

People

  • Lawrence G. Newman

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Alloys
  • Chemical Vapor Deposition
  • Chemistry
  • Coatings
  • Electron Microscopy
  • Electron Probes
  • Engineering
  • Gas Turbines
  • Heat Resistant Alloys
  • Materials
  • Materials Engineering
  • Mechanical Engineering
  • Transition Temperature
  • Turbine Blades
  • Turbine Components
  • Turbines
  • United States

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Surface Engineering/Surface Coating Technology.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics