期刊
TRIBOLOGY INTERNATIONAL
卷 44, 期 3, 页码 297-308出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2010.10.031
关键词
Dry sliding; PVD coating; Ti-6Al-4V
资金
- Emilia Romagna High-Tech Regional Network
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. (C) 2010 Elsevier Ltd. All rights reserved.
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