Oxidation performance of nano-scale multilayer coatings on γ-TiAl
Oxidation performance of nano-scale multilayer coatings on γ-TiAl
There is a major drive to introduce γ-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 γ-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.
1-4
Ross, I.M.
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Rainforth, W.M.
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Zhou, Z.
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Walker, J.C.
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Reinhard, C.
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Ehiasarian, A.P.
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Hovsepian, P.E.
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Braun, R.
1ccd2501-556d-44e6-a421-d7bd42769253
2008
Ross, I.M.
8cc6d91c-d3e6-4384-91dc-6558bd9449e1
Rainforth, W.M.
b9c1d1e5-ba6b-4856-8b62-03e38688358b
Zhou, Z.
ec4c2669-5686-45de-bf3f-acf80d0ed849
Walker, J.C.
b300eafd-5b0a-4cf5-86d2-735813b04c6f
Reinhard, C.
9d4e1fea-9578-4411-b2d0-a70d78934a9a
Ehiasarian, A.P.
e516cffb-3efc-4808-a7ba-09de32ce5fb6
Hovsepian, P.E.
26dc9a32-7129-442c-b4f1-9310a9e597e7
Braun, R.
1ccd2501-556d-44e6-a421-d7bd42769253
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 γ-TiAl.
Journal of Physics: Conference Series, 126 (1), , [012022].
(doi:10.1088/1742-6596/126/1/012022).
Abstract
There is a major drive to introduce γ-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 γ-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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e-pub ahead of print date: 25 September 2008
Published date: 2008
Organisations:
nCATS Group
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Local EPrints ID: 157743
URI: http://eprints.soton.ac.uk/id/eprint/157743
ISSN: 1742-6588
PURE UUID: 0ebc8f9a-c00c-4d64-8677-f40289f150e1
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Date deposited: 05 Dec 2011 11:39
Last modified: 14 Mar 2024 01:48
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Author:
I.M. Ross
Author:
W.M. Rainforth
Author:
Z. Zhou
Author:
C. Reinhard
Author:
A.P. Ehiasarian
Author:
P.E. Hovsepian
Author:
R. Braun
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