Study of oxidation and wear behaviors of (Nb,Cr)N thin films using Raman spectroscopy

Several (Nb,Cr)N coatings were deposited by an unbalanced magnetron sputtering system. Following the deposition, the tribological properties of these coatings were studied using a ball-on-disk setup with alumina balls. The wear debris was then characterized using Raman spectroscopy to identify oxide...

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Bibliographic Details
Published in:	Surface & coatings technology Vol. 177; pp. 299 - 305
Main Authors:	Hsieh, J.H., Li, C., Tan, A.L.K., Poh, C.K., Tan, N.J.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 30-01-2004
Subjects:	(Nb,Cr)N coatings Oxidation Raman spectroscopy Wear debris Oxidation Wear debris Raman spectroscopy (Nb,Cr)N coatings
Online Access:	Get full text
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Summary:	Several (Nb,Cr)N coatings were deposited by an unbalanced magnetron sputtering system. Following the deposition, the tribological properties of these coatings were studied using a ball-on-disk setup with alumina balls. The wear debris was then characterized using Raman spectroscopy to identify oxides generated during the wear process to gain a better understanding of tribochemical reactions. The results show that Cr 2O 3 and CrNbO 4 constitute the debris obtained from Cr-rich coatings, while Nb 2O 5· nH 2O is the major constituent of the debris formed on Nb-rich coatings. From the study of the debris, the difference in wear mechanism between Cr-rich and Nb-rich coatings is explained and confirmed.
Bibliography:	SourceType-Scholarly Journals-2 ObjectType-Feature-2 ObjectType-Conference Paper-1 content type line 23 SourceType-Conference Papers & Proceedings-1 ObjectType-Article-3
ISSN:	0257-8972 1879-3347
DOI:	10.1016/j.surfcoat.2003.09.008