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Title: Structural, chemical, optical and mechanical properties of Au doped Al-N sputtered coatings
Authors: Figueiredo, N. M. 
Vaz, F. 
Cunha, L. 
Rodil, S. E. 
Cavaleiro, A. 
Keywords: AlN-Au; Au clusters; SPR; Decorative
Issue Date: 25-Sep-2014
Publisher: Elsevier
Citation: FIGUEIREDO, N. M. [et. al] - Structural, chemical, optical and mechanical properties of Au doped Al-N sputtered coatings. "Surface and Coatings Technology". ISSN 0257-8972. Vol. 255 (2014) p. 130–139
Abstract: This paper is focused on the structure, chemical composition, optical and mechanical properties of coatings consisting in an Alsingle bondN matrix incorporating different Au contents (up to 2.5 at.%). The Au was incorporated in the matrix atomically or in the form of very small nanoparticles (< 1 nm). With the increase in the Au content both the refractive index and the coefficient of extinction were increased. The AlN matrix presented a crystalline wurtzite phase, stable up to 1000 °C. With annealing at 400 °C the precipitation of XRD detectable Au nanoparticles was possible, originating SPR light absorption. The Alsingle bondN + Au coatings exhibited hardness values between 15 and 24 GPa, with no significant changes after the annealing treatments at low temperatures. These coatings are of interest to the decorative applications.
ISSN: 0257-8972
DOI: 10.1016/j.surfcoat.2014.03.028
Rights: openAccess
Appears in Collections:I&D CEMUC - Artigos em Revistas Internacionais
FCTUC Eng.Mecânica - Artigos em Revistas Internacionais

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