Unified model for blister growth in coating degradation using weight function and diffusion concepts

This paper discusses new conceptual and mathematical models for blistering propagation especially useful for coating life assessment. It proposes new equations governing blister development that combines fracture mechanics and diffusion based concepts. The fracture mechanics concept is used to treat...

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Bibliographic Details
Published in:Materials and corrosion 2013-09, Vol.64 (9), p.794-800
Main Author: Prawoto, Y.
Format: Article
Language:English
Subjects:
Applied sciences
Blistering
Coating
coating degradation
Corrosion
Corrosion environments
Crack propagation
Diffusion
Exact sciences and technology
fracture
Fracture mechanics
interfaces
Life assessment
Mathematical analysis
Mathematical models
Metals. Metallurgy
micromechanics
Production techniques
Surface treatment
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Summary:This paper discusses new conceptual and mathematical models for blistering propagation especially useful for coating life assessment. It proposes new equations governing blister development that combines fracture mechanics and diffusion based concepts. The fracture mechanics concept is used to treat blister growth as crack propagation, while the diffusion concept is used to treat the ionic transport that eventually causes corrosion and blistering to occur. The new equations are expected to be useful in coating development as well as coating life assessment. Furthermore, with little modification, the equations are also beneficial for other surface engineering methods.
ISSN:0947-5117
1521-4176
DOI:10.1002/maco.201106404