This work focuses on the tribological behaviour of PVD coated Ti-6Al-4V. Commercially available single layer CrN, CrN/NbN superlattice and multilayer WC/C coatings were taken into consideration. The dry sliding behaviour of the coated systems was studied by a flat-on-cylinder tribometer (load range 30–60 N). A critical load, corresponding to the end of coating life, was identified for each coated system. The highest critical loads were observed for CrN- and WC/C-coated Ti-6Al-4V. However, only WC/C also led to a significant decrease of the coefficient of friction. The good performance of WC/C-coated Ti-6Al-4V was ascribed to both the high H/E ratio of the coating and to the best match of elastic modulus with the substrate.

A comparative study of the tribological behaviour of PVD coatings on the Ti-6Al-4V alloy / C.Martini; L.Ceschini. - In: TRIBOLOGY INTERNATIONAL. - ISSN 0301-679X. - STAMPA. - 44:(2011), pp. 297-308. [10.1016/j.triboint.2010.10.031]

A comparative study of the tribological behaviour of PVD coatings on the Ti-6Al-4V alloy

MARTINI, CARLA;CESCHINI, LORELLA
2011

Abstract

This work focuses on the tribological behaviour of PVD coated Ti-6Al-4V. Commercially available single layer CrN, CrN/NbN superlattice and multilayer WC/C coatings were taken into consideration. The dry sliding behaviour of the coated systems was studied by a flat-on-cylinder tribometer (load range 30–60 N). A critical load, corresponding to the end of coating life, was identified for each coated system. The highest critical loads were observed for CrN- and WC/C-coated Ti-6Al-4V. However, only WC/C also led to a significant decrease of the coefficient of friction. The good performance of WC/C-coated Ti-6Al-4V was ascribed to both the high H/E ratio of the coating and to the best match of elastic modulus with the substrate.
2011
A comparative study of the tribological behaviour of PVD coatings on the Ti-6Al-4V alloy / C.Martini; L.Ceschini. - In: TRIBOLOGY INTERNATIONAL. - ISSN 0301-679X. - STAMPA. - 44:(2011), pp. 297-308. [10.1016/j.triboint.2010.10.031]
C.Martini; L.Ceschini
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/96783
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