Interfacial stresses and degradation of oxide scale and substrate interface at high temperature

M. A. Khaleel, E. V. Stephens, J. Stevenson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Interfacial analysis utilizing interfacial indentation methodology (where micro/nano indentation is performed at the oxide scale/substrate interface to create and propagate cracks at the interface) was completed for the 14,000 and 20,000 hours, 800°C surface modified specimens. The localized oxide thickness and crack lengths were measured after applying loads ranging from 0.2 to 1.8 N. Post-processing of the results to date indicate that the critical load for surface blasted (SB) surface modified specimens is greater than the equivalent surface grind (SG) surface modified specimens which is indicative of a ∼ 25% increase in interfacial strength in the SB specimens in comparisons to the SG specimens. However, more data is needed to further quantify the interfacial strength and to reduce any uncertainty due to the approach applied.

Original languageEnglish
Title of host publicationProceedings of the TMS Middle East - Mediterranean Materials Congress on Energy and Infrastructure Systems, MEMA 2015
PublisherJohn Wiley and Sons Inc.
Pages351-355
Number of pages5
ISBN (Print)9781119065272
Publication statusPublished - 2015
EventTMS Middle East - Mediterranean Materials Congress on Energy and Infrastructure Systems, MEMA 2015 - Doha, Qatar
Duration: 11 Jan 201514 Jan 2015

Other

OtherTMS Middle East - Mediterranean Materials Congress on Energy and Infrastructure Systems, MEMA 2015
CountryQatar
CityDoha
Period11/1/1514/1/15

Keywords

  • Durability
  • Interconnect
  • SOFC

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Mechanics of Materials
  • Building and Construction

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  • Cite this

    Khaleel, M. A., Stephens, E. V., & Stevenson, J. (2015). Interfacial stresses and degradation of oxide scale and substrate interface at high temperature. In Proceedings of the TMS Middle East - Mediterranean Materials Congress on Energy and Infrastructure Systems, MEMA 2015 (pp. 351-355). John Wiley and Sons Inc..