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Cyclic oxidation behaviour of the titanium alloys Ti-6242 and Ti-17 with Ti–Al–Cr–Y coatings at 600 and 700 °C in air

Ebach-Stahl, Andrea and Eilers, Claudia and Laska, Nadine and Braun, Reinhold (2013) Cyclic oxidation behaviour of the titanium alloys Ti-6242 and Ti-17 with Ti–Al–Cr–Y coatings at 600 and 700 °C in air. Surface and Coatings Technology, 223, pp. 24-31. Elsevier. DOI: 10.1016/j.surfcoat.2013.02.021 ISSN 0257-8972

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Abstract

Oxidation protective intermetallic Ti–Al–Cr–Y coatings of 10 μm thickness were deposited on specimens of the near-α alloy Ti-6242 and the (α + β) alloy Ti-17 using magnetron sputtering. The oxidation behaviour of the coated samples was studied at 600 °C and 700 °C under cyclic oxidation conditions in air. The coatings exhibited very good adhesion to the substrate materials and provided effective oxidation protection to the titanium alloys at both temperatures. A thin alumina scale formed on top of the coatings which showed a multi-phase microstructure consisting of the Ti(Cr,Al)2 Laves phase and, dependent on exposure temperature and time, the γ-TiAl, r-TiAl2 and/or AlCr2 phases.

Item URL in elib:https://elib.dlr.de/82139/
Document Type:Article
Title:Cyclic oxidation behaviour of the titanium alloys Ti-6242 and Ti-17 with Ti–Al–Cr–Y coatings at 600 and 700 °C in air
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ebach-Stahl, Andreaandrea.ebach (at) dlr.deUNSPECIFIED
Eilers, Claudiaclaudia.eilers89 (at) googlemail.comUNSPECIFIED
Laska, Nadinenadine.laska (at) dlr.deUNSPECIFIED
Braun, Reinholdreinhold.braun (at) dlr.deUNSPECIFIED
Date:6 April 2013
Journal or Publication Title:Surface and Coatings Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:223
DOI :10.1016/j.surfcoat.2013.02.021
Page Range:pp. 24-31
Publisher:Elsevier
ISSN:0257-8972
Status:Published
Keywords:Intermetallic coatings, Ti–Al–Cr–Y, Titanium alloys, Oxidation resistance, Magnetron sputtering
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: Ebach-Stahl, Andrea
Deposited On:27 May 2013 08:46
Last Modified:10 Apr 2019 11:55

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