Structural and mechanical properties of Cr–Zr–N coatings with different Zr content. (2nd January 2020)

• Record Type: Journal Article
• Authors: Aissani, Linda; Fellah, Mamoun; Nouveau, Corinne; Abdul Samad, Mohammed; Montagne, Alex; Iost, Alain
• Is Part Of: Surface engineering. Volume 36:Number 1(2020)
• Page Start: 69
• Page End: 77
• Publication Date: 2020-01-02
• Subjects: CrN -- ZrN -- Cr–Zr–N -- wear -- friction -- nanoindentation; Surfaces (Technology) -- Periodicals; Coatings -- Periodicals; 620.4405
• DOI: 10.1080/02670844.2017.1338378
• Languages: English
• ISSNs: 0267-0844

Abstract

ABSTRACT: Cr–Zr–N films have been synthesised using R.F reactive magnetron sputtering system on Si (100) wafer and XC100 steel substrate without heating. The structural, mechanical and friction coefficient evolution as a function of the Zr content were investigated by XRD, (EDS, WDS), WPS, XPS, SEM, AFM, nanoindentation, Scratch adhesion and pin-on-disc sliding wear tests. The results show, that, with increasing Zr content, the film structure changed with the coexistence of (Cr–N, Zr–N) crystallographic orientation mixture. The films formed a (Cr, Zr) N solid solution where Zr atoms substitute Cr atoms. CrN lattice parameter increased from 4.17 to 4.32 Å with the crystallite size refinement. The mechanical parameters ( H, σ, E, H / E and H 3 / E 2 ) were significantly improved in comparison to binary films, especially at 29 at.-% Zr. The friction and wear behaviour of the Cr–Zr (29 at.-% Zr)–N coating also showed a significant improvement.