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Life Prediction of High-Temperature MCr AIY Coatings Based on Microstructural Observations
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, The Institute of Technology.
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, The Institute of Technology.
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, The Institute of Technology.
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, The Institute of Technology.
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2014 (English)In: THERMEC 2013, Trans Tech Publications Inc., 2014, Vol. 922, 143-148 p.Conference paper, Published paper (Refereed)
Abstract [en]

Thermal barrier coatings are commonly used in gas turbines for protection against high tem-perature and oxidation. Life prediction of oxidation protective coatingsmay be done bymicrostructure-based techniques such as -depletion based life criteria. In this study, a thermal barrier coating sys-tem, with an overlay NiCoCrAlY coating as bond coat, was oxidised up to 10000 h at 900 C. Themicrostructure was studied and related to Al depletion. It was found that a -depletion based lifecriterion could not be used for the studied coating composition and temperature as it would be tooconservative. A 0-depletion based model was instead suggested and supported by interdiffusion sim-ulation.

Place, publisher, year, edition, pages
Trans Tech Publications Inc., 2014. Vol. 922, 143-148 p.
Series
Advanced Materials, ISSN 1662-8985
Keyword [en]
MCrAIY, TBC, thermal barrier coating, life prediction, microstructure, Al depletion
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-106151DOI: 10.4028/www.scientific.net/AMR.922.143Scopus ID: 2-s2.0-84901480665OAI: oai:DiVA.org:liu-106151DiVA: diva2:714399
Conference
THERMEC 2013 International Conference on Processing & Manufacturing of Advanced Materials, December 2-6, 2013 Las Vegas, USA
Available from: 2014-04-28 Created: 2014-04-28 Last updated: 2016-05-26Bibliographically approved

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Eriksson, RobertYuan, KangJohansson, StenPeng, Ru

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  • apa
  • harvard1
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  • Other style
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Language
  • de-DE
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