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Influence of Ru, Mo and IR on the behavior of Ni-based MCrAlY coatings in high temperature oxidation
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.
Siemens Industrial Turbomachinery AB Finspång, Sweden.
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, The Institute of Technology.
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2014 (English)In: Proceedings of the ASME Turbo Expo, American Society of Mechanical Engineers (ASME) , 2014, Vol. 6Conference paper, Published paper (Refereed)
Abstract [en]

To improve the oxidation/corrosion resistance of MCrAlY coatings (M for Ni and/or Co), elements like Y, Si and Ta have been added into the coatings in past decades. In this study the oxidation performance of a Ni-based MCrAlY coating with small proportion of Ru, Mo and/or Ir were investigated after high-temperature exposure. The oxidation tests were carried out at 900C 1000C or 1100C The microstructure study showed that the addition of Ru, Mo and/or Ir had significant influence on the oxidation behavior at the coating surface and the microstructural evolution in the material. The microstructural evolution was quantitatively evaluated by measuring the phase degradation of β-NiAl in the coating and γ′-Ni3Al in the substrate of superalloy. Since no oxides of Ru, Mo and Ir were found on the coating surface, it was believed that the effects by those elements were mainly due to their dissolution in the metallic phases in the coatings.

Place, publisher, year, edition, pages
American Society of Mechanical Engineers (ASME) , 2014. Vol. 6
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:liu:diva-116438DOI: 10.1115/GT2014-26391ISI: 000362239800070Scopus ID: 2-s2.0-84922828640ISBN: 9780791845752 (print)OAI: oai:DiVA.org:liu-116438DiVA: diva2:798738
Conference
ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, GT 2014
Note

Funding Agencies|Energimyndigheten

Available from: 2015-03-27 Created: 2015-03-26 Last updated: 2015-11-03

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Yuan, KangPeng, RuJohansson, Sten

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf