Low cost corrosion and oxidation resistant coatings for improved system reliability, Phase I

Metadata Updated: August 1, 2018

In order to improve high-temperature oxidation and corrosion resistance of critical superalloy components in turbine engines innovative processing methods must be devised to improve coating and materials properties at a higher reliability and lower costs. Whether or not thermal barrier coating are applied to the engine components, the resistance to oxidation and hot corrosion relies on metallic coatings protecting the superalloy substrate. These metallic coatings are commonly either diffusion aluminides or MCrAlY overlays (where M=Ni, Co, Fe, Ni+Co, etc). Compared with diffusion coatings, MCrAlY coatings are more flexible in terms of composition selection for achieving a more balanced combination of coating properties and having a lower ductile to brittle transition temperature, which makes them more resistant to cracking upon thermal cycling. Several techniques have been developed to deposit MCrAlY coatings including physical vapor deposition, electrolytic codeposition, electrophoresis, and autocatalytic electroless deposition, of which electrolytic codeposition appears to be a promising, low cost, non-line of sight approach.

Therefore, the overall objective of the Phase I and II programs is to create a scalable cost effective process to produce coatings that can enhance high temperature reliability and corrosion/oxidation and erosion resistance. This program will build off of Dr. Ying Zhang (Tennessee Technological University) electrolytic codeposition work and Faraday Technology's alloy coating development efforts to create a scalable process to electrolytic codeposit MCrAlY onto engine shaped components and to investigate other potential MCrAlX alloy elements that could further increase the coatings temperature resistance. If successful this program has the potential to greatly improve the oxidation and corrosion resistance of metallic coatings while also improving their reliability at higher operating temperatures and reducing their manufacturing costs.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date August 1, 2018

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Harvested from NASA Data.json

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Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date August 1, 2018
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_93608
Maintainer Email
Public Access Level public
Bureau Code 026:00
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Harvest Source Title NASA Data.json
Data First Published 2017-12-01T08:00:00.000Z
Homepage URL https://techport.nasa.gov/view/93608
Language en-US
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-01-10T00:00:00.000Z
Program Code 026:027
Publisher Hierarchy National Aeronautics and Space Administration > Space Technology Mission Directorate
Source Datajson Identifier True
Source Hash 1e2e1932a5c1206beb050b1874be3ae8cb7173a3
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