Optimizing the Hot-Corrosion Resistance-of-Novel gamma-Ni+gamma-prime-Ni3A1-Based Alloys and Coatings

Abstract

High temperature degradation by hot corrosion (650-1000 C) and/or oxidation (>1000 C) can severely reduce the longevity of advanced gas turbine engine components. The protection of high-temperature components against hot corrosion or oxidation is typically conferred by the application of either a diffusion or overlay metallic coating that is able to form a continuous, adherent, and slow growing oxide scale. There are currently no coatings that provide adequate protection to both hot corrosion and oxidation. This study assesses and advances the performance of novel modified gamma-Ni.+ gamma-prime Ni3Al alloys and coatings. Significant progress was achieved in this study towards the targeted goal of establishing a metallic coating that is highly resistant to both hot corrosion and high temperature oxidation.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2006
Accession Number
ADA456780

Entities

People

  • Brian T Gleeson

Organizations

  • Iowa State University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Body Weight
  • Chemical Reactions
  • Chemical Vapor Deposition
  • Chemistry
  • Coatings
  • Corrosion Resistance
  • Electroplating
  • Engine Components
  • Gas Turbines
  • High Temperature
  • Materials
  • Materials Engineering
  • Materials Science
  • Oxidation
  • Oxidation Resistance
  • Turbine Components
  • Turbines

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.
  • Surface Engineering/Surface Coating Technology.
  • Systems Analysis and Design