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

DOI: 10.1016/j.scriptamat.2015.10.033 DOI Help

Authors: D. Khoshkhou (University of Birmingham) , M. Mostafavi (University of Bristol) , C. Reinhard (Diamond Light Source) , M. P. Taylor (University of Birmingham) , D. S. Rickerby (Rolls-Royce plc) , I. M. Edmonds (Rolls-Royce plc) , H. E. Evans (University of Birmingham) , T. J. Marrow (University of Oxford) , B. Connolly (University of Birmingham)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Scripta Materialia , VOL 115 , PAGES 100 - 103

State: Published (Approved)
Published: April 2016
Diamond Proposal Number(s): 8331

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.

Journal Keywords: Cyclic oxidation; Digital volume correlation; Synchrotron radiation; Thermal barrier coating; Three-dimensional tomography

Subject Areas: Materials, Engineering, Energy


Instruments: I12-JEEP: Joint Engineering, Environmental and Processing