Accession Number:

ADA164755

Title:

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

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1985-12-01

Pagination or Media Count:

77.0

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.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE