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Title: Comparison of the cyclic oxidation behavior of beta-NiAl, beta-NiPtAl and gamma-gamma prime NiPtAl coatings on various superalloys

Abstract

Abstract The influence of exposure temperature on the cyclic oxidation behavior of simple and platinum aluminide coatings on various superalloy substrates was investigated. Coatings of -NiAl, -NiPtAl and - ' NiPtAl were tested and compared in dry oxygen at 1050 - 1150 aC. There was a clear influence of substrate sulfur content on the oxidation behavior of -NiAl coatings at all three temperatures. The impact of substrate impurities, especially S content, was significantly reduced for -NiPtAl coatings at all three temperatures. Simple { ' NiPtAl coatings showed excellent oxidation behavior up to 1100 aC on some alloys, but were more sensitive to substrate composition, especially Hf content, than were -NiPtAl coatings.

Authors:
 [1];  [1];  [2];  [1]
  1. ORNL
  2. Tennessee Technological University
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); High Temperature Materials Laboratory
Sponsoring Org.:
FE USDOE - Office of Fossil Energy (FE)
OSTI Identifier:
952210
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Surface and Coatings Technology; Journal Volume: 202; Journal Issue: 4-7
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; COATINGS; HEAT RESISTING ALLOYS; IMPURITIES; OXIDATION; OXYGEN; PLATINUM; SUBSTRATES; SULFUR CONTENT; coatings; oxidation; high temperature; bond coats; superalloys

Citation Formats

Haynes, James A, Pint, Bruce A, Zhang, Ying, and Wright, Ian G. Comparison of the cyclic oxidation behavior of beta-NiAl, beta-NiPtAl and gamma-gamma prime NiPtAl coatings on various superalloys. United States: N. p., 2007. Web. doi:10.1016/j.surfcoat.2007.06.039.
Haynes, James A, Pint, Bruce A, Zhang, Ying, & Wright, Ian G. Comparison of the cyclic oxidation behavior of beta-NiAl, beta-NiPtAl and gamma-gamma prime NiPtAl coatings on various superalloys. United States. doi:10.1016/j.surfcoat.2007.06.039.
Haynes, James A, Pint, Bruce A, Zhang, Ying, and Wright, Ian G. Mon . "Comparison of the cyclic oxidation behavior of beta-NiAl, beta-NiPtAl and gamma-gamma prime NiPtAl coatings on various superalloys". United States. doi:10.1016/j.surfcoat.2007.06.039.
@article{osti_952210,
title = {Comparison of the cyclic oxidation behavior of beta-NiAl, beta-NiPtAl and gamma-gamma prime NiPtAl coatings on various superalloys},
author = {Haynes, James A and Pint, Bruce A and Zhang, Ying and Wright, Ian G},
abstractNote = {Abstract The influence of exposure temperature on the cyclic oxidation behavior of simple and platinum aluminide coatings on various superalloy substrates was investigated. Coatings of -NiAl, -NiPtAl and - ' NiPtAl were tested and compared in dry oxygen at 1050 - 1150 aC. There was a clear influence of substrate sulfur content on the oxidation behavior of -NiAl coatings at all three temperatures. The impact of substrate impurities, especially S content, was significantly reduced for -NiPtAl coatings at all three temperatures. Simple { ' NiPtAl coatings showed excellent oxidation behavior up to 1100 aC on some alloys, but were more sensitive to substrate composition, especially Hf content, than were -NiPtAl coatings.},
doi = {10.1016/j.surfcoat.2007.06.039},
journal = {Surface and Coatings Technology},
number = 4-7,
volume = 202,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}