Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/27397
Title: Influence of Ag content on mechanical and tribological behavior of DLC coatings
Authors: Manninen, N. K. 
Ribeiro, F. 
Escudeiro, A. 
Polcar, T. 
Carvalho, S. 
Cavaleiro, A. 
Keywords: Ag–DLC; Structure; Mechanical properties; Tribology; Wear mechanisms
Issue Date: 15-Oct-2013
Publisher: Elsevier
Citation: MANNINEN, N. K. [et. al] - Influence of Ag content on mechanical and tribological behavior of DLC coatings. "Surface and Coatings Technology". ISSN 0257-8972. Vol. 232 (2013) p. 440-446
Serial title, monograph or event: Surface and Coatings Technology
Volume: 232
Abstract: Ag–DLC coatings with Ag contents ranging from 1.3 at.% to 13.1 at.% were deposited by DC magnetron sputtering. The coatings were characterized with respect to their structure (by means of XRD and Raman spectroscopy), mechanical and tribological properties (by scratch test, nanoindentation, residual stress measurements and pin-on-disk test). The incorporation of 13.1 at.% Ag resulted in the formation of Ag grains of 2–3 nm which promoted the increase of graphite like bonds organized in rings. Regarding the mechanical properties, no variations were found for films with Ag contents lower than 13 at.%; a reduction of both hardness and compressive residual stress was then observed for higher values. Pin-on-disk tests were performed at two different contact pressures (690 MPa and 1180 MPa) in dry sliding conditions against a zirconia counterpart. For the lower contact pressure the variations in the wear rate are well correlated with the coating structure and mechanical properties, while for the higher contact pressure the presence of Ag is relevant and Ag–DLC coatings are showing higher wear rate than DLC one. SEM analysis revealed the formation of Ag aggregates on the wear track and adhesion of silver to the counterpart.
URI: http://hdl.handle.net/10316/27397
ISSN: 0257-8972
DOI: 10.1016/j.surfcoat.2013.05.048
Rights: openAccess
Appears in Collections:I&D CEMUC - Artigos em Revistas Internacionais
FCTUC Eng.Mecânica - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
Influence of Ag Content on Mechanical and Tribological behavior of DLC Coatings.pdf3.62 MBAdobe PDFView/Open
Show full item record

SCOPUSTM   
Citations

41
checked on Jun 25, 2019

WEB OF SCIENCETM
Citations

41
checked on Jun 25, 2019

Page view(s)

103
checked on Oct 16, 2019

Download(s)

156
checked on Oct 16, 2019

Google ScholarTM

Check

Altmetric

Dimensions


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.