Three-dimensional displacement mapping of diffused Pt thermal barrier coatings via synchrotron X-ray computed tomography and digital volume correlation

Danial Khoshkhou, Mahmoud Mostafavi, Christina Reinhard, MP Taylor, David S Rickerby, IM Edmonds, H.E. Evans, James Marrow, Brian Connolly

Research output: Contribution to journalArticle (Academic Journal)peer-review

11 Citations (Scopus)
302 Downloads (Pure)

Abstract

A progressive study of the three-dimensional deformation field within a γ/γ′ thermal barrier coating following cyclic oxidation at 1200 °C is presented, observed using synchrotron X-ray micro-computed tomography and analysed by digital volume correlation. Oxide thickening and bond coat creep displacements are quantified as a function of exposure time at temperature. Linear gradients of these displacements are measured both in-plane and normal to the oxide layer. The first thermal cycle shows the most displacement changes; destructive sectioning confirms the DVC-calculated displacement magnitudes.
Original languageEnglish
Pages (from-to)100-103
Number of pages4
JournalScripta Materialia
Volume115
Early online date25 Jan 2016
DOIs
Publication statusPublished - 1 Apr 2016

Keywords

  • Thermal barrier coating
  • Three-dimensional tomography
  • Synchrotron radiation
  • Cyclic oxidation
  • Digital volume correlation

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