Tribological response of AA 2024-T3 aluminium alloy coated with a DLC duplex coating

Article dans une revue avec comité de lecture
Auteur
STAIA, Mariana
1252 Laboratoire de Mécanique de Lille - FRE 3723 [LML]
PUCHI-CABRERA, Eli-Saul
1252 Laboratoire de Mécanique de Lille - FRE 3723 [LML]
IOST, Alain
1252 Laboratoire de Mécanique de Lille - FRE 3723 [LML]
ZAIRI, Amel
1252 Laboratoire de Mécanique de Lille - FRE 3723 [LML]
BELAYER, S.
21932 Laboratoire des Procédés d'Elaboration des Rvêtements Fonctionnels [PERF]
VAN GORP, Adrien
1252 Laboratoire de Mécanique de Lille - FRE 3723 [LML]

URI
http://hdl.handle.net/10985/9657
DOI
10.1016/j.triboint.2014.12.007
Date
2015
Journal
Tribology International

Résumé

Considerable improvement in the tribological response was achieved during sliding wear tests against alumina ball, when AA 2024-T3-aluminium alloy substrate was coated with DLC/NiP duplex coating. Quantitative EPMA analysis carried out on the coated sample cross-section coupled with nanoindentation techniques allowed the identification of the coated system architecture as composed of 4 main layers, with distinct mechanical properties, on top of the aluminium substrate: DLC (a:C-H chromium dopped layer and graded layer of CrC), a newly formed graded layer of CNiPCr, product of the interdifusion during PVD processing, and the NiP coating. The change in the elastic modulus with penetration depth was described by means of an original approach that was developed for its specific application to multilayer coatings.

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