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Oxidation performance of nano-scale multilayer coatings on ?-TiAl

Record type: Article

There is a major drive to introduce ?-TiAl into gas turbine engines in order to reduce weight. However, this will require the development of coatings that protect against oxidation at high temperature, but do not adversely affect the mechanical properties. This work reports the high temperature degradation mechanisms of a nanoscale CrAlYN/CrN multilayer coating deposited on ?-TiAl(8Nb) by a combined high power impulse magnetron sputtering / unbalanced magnetron sputtering. Detailed TEM/STEM of FIB prepared specimens from isothermal static oxidation tests at 850°C for up to 1030 hours is presented. The evolution of the complex oxide structure and the implications for future coating development is discussed.

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Citation

Ross, I.M., Rainforth, W.M., Zhou, Z., Walker, J.C., Reinhard, C., Ehiasarian, A.P., Hovsepian, P.E. and Braun, R. (2008) Oxidation performance of nano-scale multilayer coatings on ?-TiAl Journal of Physics: Conference Series, 126, (1), 012022-[4pp]. (doi:10.1088/1742-6596/126/1/012022).

More information

e-pub ahead of print date: 25 September 2008
Published date: 2008
Organisations: nCATS Group

Identifiers

Local EPrints ID: 157743
URI: http://eprints.soton.ac.uk/id/eprint/157743
ISSN: 1742-6588
PURE UUID: 0ebc8f9a-c00c-4d64-8677-f40289f150e1

Catalogue record

Date deposited: 05 Dec 2011 11:39
Last modified: 18 Jul 2017 12:40

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Contributors

Author: I.M. Ross
Author: W.M. Rainforth
Author: Z. Zhou
Author: J.C. Walker
Author: C. Reinhard
Author: A.P. Ehiasarian
Author: P.E. Hovsepian
Author: R. Braun

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