Enhanced model for axisymmetric stability analysis of propagating circular defect-driven coating delamination under combined compressive and diffusion-induced stresses
Authors: Nazir, M.H., Khan, Z.A., Zaidi, S.Z.J., Hussain, M.M. and Taiwo, O.O.
Journal: International Journal of Electrochemical Science
Volume: 19
Issue: 12
eISSN: 1452-3981
DOI: 10.1016/j.ijoes.2024.100876
Abstract:This paper examines the delamination of palladium (Pd) coatings bonded to a steel substrate under equi-biaxial compression coupled with diffusion-induced stress. The study focuses on circular delaminations. Large delaminations cause the coating to debond, forming blisters, which generate a driving force on the edge crack tip. A two-part theoretical model is developed: axisymmetric blister propagation in a stable circular pattern and non-axisymmetric perturbation of the blister leading to branching. Detailed experimental studies validate the theoretical predictions. The experiments show that non-axisymmetric crack tip instabilities during propagation result in worm-like patterns.
https://eprints.bournemouth.ac.uk/40584/
Source: Scopus
Enhanced model for axisymmetric stability analysis of propagating circular defect-driven coating delamination under combined compressive and diffusion-induced stresses
Authors: Nazir, M.H., Khan, Z.A., Zaidi, S.Z.J., Hussain, M.M. and Taiwo, O.O.
Journal: INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume: 19
Issue: 12
ISSN: 1452-3981
DOI: 10.1016/j.ijoes.2024.100876
https://eprints.bournemouth.ac.uk/40584/
Source: Web of Science (Lite)
Enhanced model for axisymmetric stability analysis of propagating circular defect-driven coating delamination under combined compressive and diffusion-induced stresses
Authors: Nazir, M.H., Khan, Z.A., Zaidi, S.Z.J., Hussain, M.M. and Taiwo, O.O.
Journal: International Journal of Electrochemical Science
Volume: 19
Issue: 12
ISSN: 1452-3981
Abstract:This paper examines the delamination of palladium (Pd) coatings bonded to a steel substrate under equi-biaxial compression coupled with diffusion-induced stress. The study focuses on circular delaminations. Large delaminations cause the coating to debond, forming blisters, which generate a driving force on the edge crack tip. A two-part theoretical model is developed: axisymmetric blister propagation in a stable circular pattern and non-axisymmetric perturbation of the blister leading to branching. Detailed experimental studies validate the theoretical predictions. The experiments show that non-axisymmetric crack tip instabilities during propagation result in worm-like patterns.
https://eprints.bournemouth.ac.uk/40584/
Source: BURO EPrints