Harvey_On spallation of EB-PVD thermal barrier coatings on turbine blades (1).pdf (189.66 kB)
0/0

On spallation of EB-PVD thermal barrier coatings on turbine blades

Download (189.66 kB)
conference contribution
posted on 28.06.2018 by Christopher Harvey, Simon Wang, Bo Yuan, Rachel Thomson, Gary Critchlow
Room temperature blistering and spallation failures reduce the life time of thermal barrier coatings (TBC). Based on the theory of pockets of energy concentration, a mechanical model for the multilayer circular blister is presented, considering the variable material properties through the coating thickness. Con-ditions are revealed analytically for nucleation, propagation and the spallation of TBC blisters. The predictions from the mechanical model on radii for TBC blister unstable growth and spallation are in good agreement with experimental results. Furthermore, this model is beneficial to determine the interface fracture tough-ness and the residual stress in the coating system.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

ICTAEM 2018: International Conference on Theoretical, Applied and Experimental Mechanics Proceedings of The 2nd International Symposium on Advanced Materials and Engineering Applications

Pages

1 - 5

Citation

HARVEY, C.M. ...et al., 2018. On spallation of EB-PVD thermal barrier coatings on turbine blades. IN: Proceedings of The 2nd International Symposium on Advanced Materials and Engineering Applications [International Conference on Theoretical, Applied and Experimental Mechanics 2018], Paphos, Cyprus, June 17-20th, pp. 1-5.

Publisher

Hebei University of Engineering and Loughborough University

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

12/03/2018

Publication date

2018

Notes

This is a conference paper.

Publisher version

Language

en

Location

Paphos, Cyprus

Exports