Effect of oxygen addition on microstructure and mechanical properties of quaternary TNTZ superelastic thin films obtained by magnetron sputtering

Achache, Sofiane; Alhussein, Akram; Guelorget, Bruno; Salut, Roland; François, Manuel; Sanchette, Frédéric

doi:10.1016/j.matchemphys.2018.06.066

Cited by 8 publications

(3 citation statements)

References 30 publications

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“…Many copper-based coatings such as TiO 2 -Cu, Cu, Ti, Nb, and their oxides were developed and investigated, mainly for their antibacterial properties. In our previous studies [13][14][15], we reported the mechanical properties of a superelastic Ti-based GMTF showing increased bacterial inactivation under light concomitant to a biocompatible property in darkness [16,17]. We also showed the effect of copper content on the structure, morphology, and mechanical properties of GMTF [18].…”

Section: Introductionmentioning

confidence: 72%

Architectured Cu–TNTZ Bilayered Coatings Showing Bacterial Inactivation under Indoor Light and Controllable Copper Release: Effect of the Microstructure on Copper Diffusion

et al. 2020

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A Ti–23Nb–0.7Ta–2Zr–1.2O alloy (at %), called “gum metal”, was deposited by direct-current magnetron sputtering (DCMS) on an under layer of copper. By varying the working pressure during the deposition, columnar TNTZ (Ti–Nb–Ta–Zr) nanoarchitectures were obtained. At low working pressures, the upper layer was dense with a coarse surface (Ra = 12 nm) with a maximum height of 163 nm; however, the other samples prepared at high working pressures showed columnar architectures with voids and an average roughness of 4 nm. The prepared coatings were characterized using atomic force microscopy (AFM) for surface topography, energy dispersive X-ray spectroscopy (EDX) for atomic mapping, scanning electron microscopy (SEM) for cross-section imaging, contact angle measurements for hydrophilic/hydrophobic balance of the prepared surfaces, and X-ray diffraction (XRD) for the crystallographic structures of the prepared coatings. The morphology and the density of the prepared coatings were seen to influence the hydrophilic properties of the surface. The antibacterial activity of the prepared coatings was tested in the dark and under low-intensity indoor light. Bacterial inactivation was seen to happen in the dark from samples presenting columnar nanoarchitectures. This was attributed to the diffusion of copper ions from the under layer. To verify the copper release from the prepared samples, an inductively coupled plasma mass spectrometer (ICP-MS) was used. Additionally, the atomic depth profiling of the elements was carried out by X-ray photoelectron spectroscopy (XPS) for the as-prepared samples and for the samples used for bacterial inactivation. The low amount of copper in the bulk of the TNTZ upper layer justifies its diffusion to the surface. Recycling of the antibacterial activity was also investigated and revealed a stable activity over cycles.

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Section: Introductionmentioning

confidence: 72%

Architectured Cu–TNTZ Bilayered Coatings Showing Bacterial Inactivation under Indoor Light and Controllable Copper Release: Effect of the Microstructure on Copper Diffusion

et al. 2020

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“…Various technologies have been used to design and to synthesize this kind of multi-element materials such as laser cladding [20][21][22], magnetron sputtering [23][24][25][26][27][28][29] and others [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Structural and mechanical properties of AlTiTaZr( N) medium entropy films (MEF) obtained by DC magnetron sputtering in dynamic mode

Garah

Achache

Michau

et al. 2020

Surface and Coatings Technology

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“…Ti, Nb, and Zr are non-toxic elements and thus do not cause any adverse reaction in the human body [ 12 ]. The addition of Zr to the β-type Ti-Nb alloy is beneficial for increasing the superelasticity, enhancing corrosion resistance, the maximum recovered strain, and the critical stress for slip deformation compared with Ta, and thus shows promising potential for biomedical applications [ 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Phase Stability and Properties of Ti-Nb-Zr Thin Films and Their Dependence on Zr Addition

Yang

Baatarsukh²,

Bae³

et al. 2018

Materials

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Ternary Ti-Nb-Zr alloys were prepared by a magnetron sputtering method with porous structures observed in some of them. In bulk, in order to control the porous structure, a space holder (NH4HCO3) is used in the sintering method. However, in the present work, we show that the porous structure is also dependent on alloy composition. The results from Young’s modulus tests confirm that these alloys obey d-electrons alloy theory. However, the Young’s modulus of ternary thin films (≈80–95 GPa) is lower than that for binary alloys (≈108–123 GPa). The depth recovery ratio of ternary Ti-Nb-Zr thin films is also higher than that for binary β-Ti-(25.9–34.2)Nb thin film alloys.

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Effect of oxygen addition on microstructure and mechanical properties of quaternary TNTZ superelastic thin films obtained by magnetron sputtering

Cited by 8 publications

References 30 publications

Architectured Cu–TNTZ Bilayered Coatings Showing Bacterial Inactivation under Indoor Light and Controllable Copper Release: Effect of the Microstructure on Copper Diffusion

Architectured Cu–TNTZ Bilayered Coatings Showing Bacterial Inactivation under Indoor Light and Controllable Copper Release: Effect of the Microstructure on Copper Diffusion

Structural and mechanical properties of AlTiTaZr( N) medium entropy films (MEF) obtained by DC magnetron sputtering in dynamic mode

Phase Stability and Properties of Ti-Nb-Zr Thin Films and Their Dependence on Zr Addition

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