Three-dimensional displacement mapping of diffused Pt thermal barrier coatings via synchrotron X-ray computed tomography and digital volume correlation. (1st April 2016)

• Record Type: Journal Article
• Authors: Khoshkhou, D.; Mostafavi, M.; Reinhard, C.; Taylor, M.P.; Rickerby, D.S.; Edmonds, I.M.; Evans, H.E.; Marrow, T.J.; Connolly, B.J.
• Is Part Of: Scripta materialia. Volume 115(2016)
• Page Start: 100
• Page End: 103
• Publication Date: 2016-04-01
• Subjects: Thermal barrier coating -- Three-dimensional tomography -- Synchrotron radiation -- Cyclic oxidation -- Digital volume correlation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.10.033
• Languages: English
• ISSNs: 1359-6462

Abstract

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. Graphical abstract: