Fröhlich, Maik and Leyens, Christoph (2008) Investigations on the oxidation behaviour of MAX-phase based Ti<sub>2</sub>AlC coatings on γ-TiAl. 11th International Conference on Plasma Surface Engineering (PSE), 2008-09-15 - 2009-09-19, Garmisch-Partenkirchen.
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Abstract
In the field of aerospace and automotive industry the development of light materials with resistance against high mechanical stresses is a main focus especially for economic and ecological reasons. With much lower density and excellent mechanical properties γ-TiAl alloys are promising candidates to replace the heavy steels and Ni-based super alloys. Protective coatings are necessary to exploit the full potential of gamma titanium aluminides at temperatures higher than 750°C with regard to a much lower oxidation rate. In this study the oxidation resistant and MAX-phase based material Ti<sub>2</sub>AlC was investigated as coating material on γ-TiAl deposited by magnetron sputtering. The phase formation was enhanced after the deposition process by heat treatment under high vacuum conditions. This phase should intend the formation of a slow growing and protective Al<sub>2</sub>O<sub>3</sub> scale when exposed to air at 950°C. The results of that test will be presented in relation to a non-pre-treated coating highlighting microstructure features by means of SEM and EDS analysis after exposure with regard to oxidation kinetics and lifetimes of the coating systems.
Item URL in elib: | https://elib.dlr.de/56384/ | ||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||
Title: | Investigations on the oxidation behaviour of MAX-phase based Ti<sub>2</sub>AlC coatings on γ-TiAl | ||||||||||||
Authors: |
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Date: | 2008 | ||||||||||||
Open Access: | No | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | No | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | TiAl, MAX-Phase, Oxidationsschutzschichten | ||||||||||||
Event Title: | 11th International Conference on Plasma Surface Engineering (PSE) | ||||||||||||
Event Location: | Garmisch-Partenkirchen | ||||||||||||
Event Type: | international Conference | ||||||||||||
Event Start Date: | 15 September 2008 | ||||||||||||
Event End Date: | 19 September 2009 | ||||||||||||
Organizer: | European Joint Committee on Plasma and Ion Surface Engineering | ||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
HGF - Program: | Aeronautics | ||||||||||||
HGF - Program Themes: | Propulsion Systems (old) | ||||||||||||
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: | Fröhlich, Maik | ||||||||||||
Deposited On: | 28 Nov 2008 | ||||||||||||
Last Modified: | 24 Apr 2024 19:20 |
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