Tell a friend
Print
Ebach-Stahl, Andrea and Fröhlich, Maik (2016) Oxidation study of Pt–Al based coatings on γ-TiAl at 950 °C. Surface and Coatings Technology (287), pp. 20-24. Elsevier. doi: 10.1016/j.surfcoat.2015.12.043. ISSN 0257-8972.
![[img]](https://elib.dlr.de/style/images/fileicons/application_pdf.png) |
PDF
4MB |
Official URL: http://dx.doi.org/10.1016/j.surfcoat.2015.12.043
Abstract
In the present study, Pt-based aluminide coatings were deposited on γ-TiAl (Ti–45Al–8Nb–08C; at.%) by magnetron sputtering and tested under high temperature conditions. The Pt-content in the layer was varied (31, 47 and 100 at.%) to find an optimized oxidation resistant coating. The Pt-53Al coating showed the best oxidation resistance at 950 °C due to the formation of a continuous thin alumina layer on top compared to the fast oxidizing pure Pt and aluminum rich Pt–69Al coatings. Depending on the testing time different Pt–Ti–Al phases were formed below the grown oxide layer which is caused by the outward diffusion of Ti and the inward diffusion of Pt at the interface between coating and base material, respectively. Beside mass gain measurements microstructural examinations were performed via scanning electron microscopy (SEM), energy-dispersive X-Ray spectroscopy (EDS) as well as X-Ray diffractometry (XRD) to study the evolution of phase formation.
| Item URL in elib: | https://elib.dlr.de/104129/ | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Document Type: | Article | ||||||||||||
| Title: | Oxidation study of Pt–Al based coatings on γ-TiAl at 950 °C | ||||||||||||
| Authors: |
| ||||||||||||
| Date: | 6 January 2016 | ||||||||||||
| Journal or Publication Title: | Surface and Coatings Technology | ||||||||||||
| Refereed publication: | Yes | ||||||||||||
| Open Access: | Yes | ||||||||||||
| Gold Open Access: | No | ||||||||||||
| In SCOPUS: | Yes | ||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||
| DOI: | 10.1016/j.surfcoat.2015.12.043 | ||||||||||||
| Page Range: | pp. 20-24 | ||||||||||||
| Publisher: | Elsevier | ||||||||||||
| ISSN: | 0257-8972 | ||||||||||||
| Status: | Published | ||||||||||||
| Keywords: | PtAl, γ-TiAl, Oxidation Coating, Magnetron sputtering | ||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
| HGF - Program: | Aeronautics | ||||||||||||
| HGF - Program Themes: | propulsion systems | ||||||||||||
| DLR - Research area: | Aeronautics | ||||||||||||
| DLR - Program: | L ER - Engine Research | ||||||||||||
| DLR - Research theme (Project): | L - Turbine Technologies (old) | ||||||||||||
| Location: | Köln-Porz | ||||||||||||
| Institutes and Institutions: | Institute of Materials Research > High Temperature and Functional Coatings | ||||||||||||
| Deposited By: | Ebach-Stahl, Andrea | ||||||||||||
| Deposited On: | 02 Mar 2018 12:30 | ||||||||||||
| Last Modified: | 03 Nov 2023 08:08 |
Repository Staff Only: item control page
