Please use this identifier to cite or link to this item:
Title: Influence of Ag alloying on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/Ti(Ag)N films
Authors: Al-Rjoub, A. 
Cavaleiro, A. 
Fernandes, F. 
Keywords: TiSiN/Ti(Ag)N films; Structure; Thermal stability; Oxidation resistance
Issue Date: 2020
Project: SMARTLUB - ref. “POCI-01-0145-FEDER-031807” 
CONTROLLUB - UT Austin Portugal Program ref. “UTAP-EXPL/NTec/0107/2017” 
bilateral collaborative project between Portugal and India (Project number “441.00 INDIA”) 
project CZ.02.2.69/ 0.0/0.0/18_070/0010457 in Czech Republic. 
Serial title, monograph or event: Materials and Design
Volume: 192
Abstract: Self-lubricant films combine the intrinsic properties of high oxidation resistance coatings with lubricious elements deposited as monolayer and/or multilayered configuration, offering an opportunity to design green coating materials. The present paper reports the influence of Ag additions (range 0–3.2 at.%), considered as low friction material, on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/TiN(Ag) films deposited by sputtering. The surface morphology of the coatings progressively changed from a well-defined cauliflower structure to a tetrahedral and pyramid-like structure and the cross-section morphology became more compact with Ag incorporation. A decrease of coating's hardness and Young's modulus was observed with Ag additions, due to the incorporation of the soft silver on the structure. The coatings showed excellent thermal stability and revealed a good control to the Ag diffusion towards the surface in protective atmosphere. Ag additions did not affect the onset oxidation point of films. However, the oxidation resistance of the films was reduced with Ag inclusion, due to its additional transportation during the oxidation process, promoting additional paths for ions diffusion, giving rise to a less protective Ti-Si-O layer and contributing to the formation of big crystals of rutile on the top.
ISSN: 02641275
DOI: 10.1016/j.matdes.2020.108703
Rights: openAccess
Appears in Collections:I&D CEMMPRE - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
1-s2.0-S0264127520302379-main.pdf2.95 MBAdobe PDFView/Open
Show full item record


checked on Nov 17, 2022


checked on May 2, 2023

Page view(s)

checked on Sep 18, 2023


checked on Sep 18, 2023

Google ScholarTM




This item is licensed under a Creative Commons License Creative Commons