An investigation of the oxide adhesion and growth characteristics on platinum modified aluminide coatings.
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Authors
Farrell, Margaret Shannon.
Subjects
Turbine Blade Coatings
Platinum Aluminides
Oxide Adhesion
IN - 738
Cyclic oxidation
Coating Degradation
Platinum Aluminides
Oxide Adhesion
IN - 738
Cyclic oxidation
Coating Degradation
Advisors
Boone, D.H.
Date of Issue
1986
Date
September 1986
Publisher
Language
en_US
Abstract
The operating environment for superalloy blades and vanes in gas turbine engines
has necessitated the development of alloy coatings to achieve satisfactory resistance of
the metal to oxidation and hot corrosion. Aluminide coatings were initially developed
to meet this need. Recently it was shown that platinum additions significantly improve
the oxidation resistance of these aluminide coatings. The effects of pre-aluminizing
surface smoothness and coating structure for both platinum modified and unmodified
aluminide coatings on IN-738 in a cyclic oxidation environment at 1100°C were
examined. Weight change measurements were used to determine the coating oxide scale
adherence characteristics and to quantify the cyclic oxidation behavior of the various
coating structures.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
60 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.