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Plasma magnetron sputtering using combinatorial approach to deposit complex alloys thin films

Andrea Jagodar
Amael Caillard
Marjorie Cavarroc
Anne-Lise Thomann

Résumé

In the current context of the SARS-COV-2 pandemic, there is an urgent need to find “multi-material” solutions to prevent the formation of biofilms and to promote the bactericidal and virucidal properties [1] of surfaces (metallic or plastic) in regular contact with users. Current solutions make it possible to limit the formation of a biofilm (by anti-adhesive or contact killing strategies) or to form films, with proven anti-bacterial properties (release killing). Their anti-viral properties, when they exist, do not cover the novel corona virus (SARS-CoV-2). This work aims to synthesize thin films of complex alloys (poorly ordered metallic multimaterials, HEA : High entropy alloys[2]) by plasma magnetron sputtering deposition using a combinatorial approach [3] in order to deposit films of a large range of composition in one run of experiments. Actually, in this kind of alloys, morphology, phase formation and crystalline structure, that determine the final properties, are strongly dependent on the chemical composition. Thin films are deposited on two types of substrates in order to study the differences in adhesion. The selected alloy families are CuTiZn and CuZrZn since Cu, Zn and Ti and their associated oxides [4] are used as bactericidal agents. Zr and Ti are also present in order to add good mechanical properties to the coating such as abrasion resistance, required especially during cleaning cycles. The thin films are then analysed by scanning electron microscopy and X-ray diffraction. The abrasion resistance, anti-viral and anti-bacterial activities will be also studied. [1] D. Castro, P. Jaeger, A.C. Baptista and J.P. Oliveira « An Overview of High-Entropy Alloys as Biomaterials » Metals 2021, 11(4), 648. https://doi.org/10.3390/met11040648 [2] Y. Zhang, T.T. Zuo, Z. Tang, M.C. Gao, K.A. Dahmen, P.K. Liaw and Z.P. Lu « Microstructures and Properties of High-entropy Alloys » Progress in Materials Science 2013, 61, 1-93. https://doi.org/10.1016/j.pmatsci.2013.10.001 [3] P. Keuter , S.K.Aghda, D. Music , P. Kümmerl and J.M. Schneider « Synthesis of Intermetallic (Mg1−x,Alx)2Ca by Combinatorial Sputtering » Materials (2019) [4] J. Sawai, «Quantitative evaluation of antibacterial activities of metallic oxide powders (ZnO, MgO and CaO) by coductimetric assay» J. Microbiol. Methods 2003, 54(2), 177-182. https://doi.org/10.1016/S0167-7012(03)00037-X [5] T. Ishida, « Bacteriolysis by Zinc Ions-Induced PGN Autolysins, Virucide by ZAP, ZBD, ZnONPs, and Prevaling Zinc Ions-Mediated HCoVs Matter» International JOurnal of Research Studies in Medical and Health Sciences 2020, 5(3), PP1-15.

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Plasmas
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Dates et versions

hal-04243689 , version 1 (16-10-2023)

Identifiants

  • HAL Id : hal-04243689 , version 1

Citer

Boivin Dimitri, Andrea Jagodar, Amael Caillard, Pascal Brault, Marjorie Cavarroc, et al.. Plasma magnetron sputtering using combinatorial approach to deposit complex alloys thin films. PLATHINIUM, Sep 2023, Antibes, France. ⟨hal-04243689⟩
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