Structural, chemical, optical and mechanical properties of Au doped Al - N sputtered coatings

SURFACE & COATINGS TECHNOLOGY

卷:255

Article; Proceedings Paper

Figueiredo, N. M.¹  Vaz, F.²  Cunha, L.²  Rodil, S. E.³  Cavaleiro, A.¹ 

[1] Univ Coimbra, Dept Mech Engn, SEG CEMUC, P-3000 Coimbra, Portugal

[2] Univ Minho, Ctr Phys, P-4719 Braga, Portugal

[3] Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico

关键词: AIN-Au;    Au clusters;    SPR;    Decorative;   

DOI  :  10.1016/j.surfcoat.2014.03.028

来源: Elsevier

【 摘 要 】

This paper is focused on the structure, chemical composition, optical and mechanical properties of coatings consisting in an Al - N 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 AIN matrix presented a crystalline wurtzite phase, stable up to 1000 C-circle. With annealing at 400 C-circle the precipitation of XRD detectable Au nanoparticles was possible, originating SPR light absorption. The Al - N + 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. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

Free