Numerical modelling of diffusion coupled with cyclic oxidation. Application to alumina-forming coatings used for industrial gas turbine blades
Overview & Synopsis
A model using a finite elements code is developed to simulate degradation due to combined cyclic oxidation and interdiffusion in materials used in high temperature components of gas turbines. Coating recession due to cyclic oxidation (oxide growth and spalling) is also modelled using a statistical approach. Interdiffusion between coating and superallloy is modelled to predict total Al depletion in the coating. The phase transformations in the alumina-forming coating and the effects of the precipitates at the coating / superalloy interface are investigated. The results of simulations are compared with experimental data. Effects of diffusion parameters and of cyclic oxidation kinetics are discussed.
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Document Information
| Document Title | Numerical modelling of diffusion coupled with cyclic oxidation. Application to alumina-forming coatings used for industrial gas turbine blades |
|---|---|
| Author / Organization | Dominique Poquillon, Nadia Vialas, Daniel Monceau |
| Subject & Discipline | Multidisciplinary Academic Open Research |
| Categories | Science & Mathematics |
| Publication Year | 2008 |
| License / Rights | Open Access / Creative Commons |
| Resource Verification | Listed PDF (Verification Pending) |
| Original Host Website |
HAL Open Science
(hal.science)
|
| File Format | application/pdf (Portable Document Format) |
| Language | EN |
| Catalog ID | DOC-102185 |
| Original Source Link | Visit Source Page on hal.science » |