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Ni–Ti(–Cu) shape memory alloy interlayers supporting low friction functional coatings

Ni–Ti(–Cu) shape memory alloy interlayers supporting low friction functional coatings
Ni–Ti(–Cu) shape memory alloy interlayers supporting low friction functional coatings
The effects of Ni–Ti(–Cu) interlayers on the mechanical and tribological behaviour of W–S–C/Ni–Ti(–Cu) and W:DLC/Ni–Ti(–Cu) bilayer coatings have been investigated. The mechanical properties of the bilayers, measured at different depths by nanoindentation, exhibited a clear dependence on the combination between different Ni–Ti(–Cu) interlayers and top layers. The tribological performance of the bilayers was evaluated by pin-on-disk under different load conditions. The use of Ni–Ti(–Cu) interlayers improved the adhesion of the top layers and the resistance against surface damage such as delamination and cracking. Transmission electron microscopy analyses performed in the wear tracks of W–S–C/Ni–Ti and W:DLC/Ni–Ti bilayers tested with high load revealed that the formation of stabilised martensite was limited when a much harder top functional layer was employed.
0301-679X
Callisti, M.
093b5320-2398-4d72-8b09-278d22a08937
Danek, M.
39e81afc-befe-486c-82f8-3b086e1569d5
Yasuda, K.
b2485747-716f-4be3-8fa6-738044597e6b
Evaristo, M.
ad10848a-2415-413e-b5f9-ed28d055ef60
Tichelaar, F. D.
b96cf2d4-b18c-48a5-87e2-236b9f48aa60
Cavaleiro, A.
114e42eb-7255-47ef-834d-0546d56d3171
Polcar, T.
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
Callisti, M.
093b5320-2398-4d72-8b09-278d22a08937
Danek, M.
39e81afc-befe-486c-82f8-3b086e1569d5
Yasuda, K.
b2485747-716f-4be3-8fa6-738044597e6b
Evaristo, M.
ad10848a-2415-413e-b5f9-ed28d055ef60
Tichelaar, F. D.
b96cf2d4-b18c-48a5-87e2-236b9f48aa60
Cavaleiro, A.
114e42eb-7255-47ef-834d-0546d56d3171
Polcar, T.
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2

Callisti, M., Danek, M., Yasuda, K., Evaristo, M., Tichelaar, F. D., Cavaleiro, A. and Polcar, T. (2015) Ni–Ti(–Cu) shape memory alloy interlayers supporting low friction functional coatings. Tribology International. (doi:10.1016/j.triboint.2015.03.018).

Record type: Article

Abstract

The effects of Ni–Ti(–Cu) interlayers on the mechanical and tribological behaviour of W–S–C/Ni–Ti(–Cu) and W:DLC/Ni–Ti(–Cu) bilayer coatings have been investigated. The mechanical properties of the bilayers, measured at different depths by nanoindentation, exhibited a clear dependence on the combination between different Ni–Ti(–Cu) interlayers and top layers. The tribological performance of the bilayers was evaluated by pin-on-disk under different load conditions. The use of Ni–Ti(–Cu) interlayers improved the adhesion of the top layers and the resistance against surface damage such as delamination and cracking. Transmission electron microscopy analyses performed in the wear tracks of W–S–C/Ni–Ti and W:DLC/Ni–Ti bilayers tested with high load revealed that the formation of stabilised martensite was limited when a much harder top functional layer was employed.

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More information

Published date: 24 April 2015
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 375738
URI: https://eprints.soton.ac.uk/id/eprint/375738
ISSN: 0301-679X
PURE UUID: 0e8f32c5-29e6-4bc7-8e8b-bc302783d948
ORCID for T. Polcar: ORCID iD orcid.org/0000-0002-0863-6287

Catalogue record

Date deposited: 13 Apr 2015 13:45
Last modified: 06 Jun 2018 12:30

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Contributors

Author: M. Callisti
Author: M. Danek
Author: K. Yasuda
Author: M. Evaristo
Author: F. D. Tichelaar
Author: A. Cavaleiro
Author: T. Polcar ORCID iD

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