Effect of Chromium Addition to the Low Temperature Hot Corrosion Resistance of Platinum Modified Aluminide Coatings.

Abstract

Marine gas turbines face many adverse conditions such as reduced fuel quality and a salt environment which present the sulfur, chloride, and sulfates required to initiate and propagate hot corrosion. A particularly severe type of hot corrosion is low temperature hot corrosion (LTHC) encountered at the low temperatures (600-750 C) used for low power destroyer operations. Platinum-aluminides have demonstrated great success as protective coatings which delay the onset of high temperature hot corrosion attack (800-1000 C). Chromium is known to provide good LTHC resistance. The effect of chromium addition to platinum aluminide coatings was investigated using two different nickel base superalloys, IN-738 (16% Cr) and IN-100 (10% Cr). Keywords: Platinum Aluminide, Chromium Aluminide; Nickel base Superalloy; IN-738; In-100; Thesis.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1985
Accession Number
ADA164755

Entities

People

  • Mark W. Dust

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Alloys
  • Chemistry
  • Chromium
  • Coatings
  • Corrosion Resistance
  • Engineering
  • Gas Turbines
  • Heat Resistant Alloys
  • High Temperature
  • Materials
  • Mechanical Engineering
  • Platinum
  • Protective Coatings
  • Refractory Metals
  • Resistance
  • Turbines
  • United States

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Surface Engineering/Surface Coating Technology.