Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4292
Title: Elastic properties of (Ti,Al,Si)N nanocomposite films
Authors: Carvalho, S. 
Vaz, F. 
Rebouta, L. 
Schneider, D. 
Cavaleiro, A. 
Alves, E. 
Keywords: Superhard coatings; Young's modulus; Ti-Al-Si-N; Elastic modulus
Issue Date: 2001
Citation: Surface and Coatings Technology. 142-144:(2001) 110-116
Abstract: (Ti,Al,Si)N films have been prepared by d.c. and rf reactive magnetron sputtering, with Si contents in the range 2-11 at.% and Al contents between 4 and 19 at.%. Samples prepared in rotation mode (three magnetrons) presented densities between 4.0 and 4.6 g/cm3, while samples prepared in static mode (magnetron with Ti target with small pieces of Si and Al) displayed densities mainly in the range 3.0-3.9 g/cm3. For comparison purposes, the evaluation of Young's modulus was performed by both depth-sensing indentation and surface acoustic wave (SAW) techniques. Indentation results revealed systematically higher values than those obtained by SAW. These discrepancies might be related with the relatively low density of the films. Hardness values of approximately 60 GPa were obtained with samples with a composition of approximately 28.5 at.% titanium, 12 at.% aluminium, 9.5 at.% silicon and 50 at.% nitrogen. XRD patterns showed the presence of two different crystalline phases, as in the case of (Ti,Si)N films. One is assigned to TiN phase (lattice parameter of approx. 0.429 nm) and the second, the so-called solid solution which is developed in situations of low surface mobility, revealed a lattice parameter (0.419 nm) slightly lower than that of bulk TiN.
URI: http://hdl.handle.net/10316/4292
DOI: 10.1016/S0257-8972(01)01242-7
Rights: openAccess
Appears in Collections:FCTUC Eng.Mecânica - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
file4a4fafbe9d5741f5b34b3573ec3fbcb2.pdf162.53 kBAdobe PDFView/Open
Show full item record

WEB OF SCIENCETM
Citations

46
checked on Sep 2, 2021

Page view(s)

358
checked on Sep 10, 2021

Download(s) 20

862
checked on Sep 10, 2021

Google ScholarTM

Check

Altmetric

Altmetric


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