Laser nitriding of titanium surfaces for biomedical applications

Zeng, Congyuan; Wen, Hao; Ettefagh, Ali Hemmasian; Zhang, Bin; Gao, Juan; Haghshenas, Ali; Raush, Jonathan; Guo, Shengmin

doi:10.1016/j.surfcoat.2020.125397

Cited by 32 publications

(9 citation statements)

References 44 publications

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“…In the traditional high-temperature nitriding process, a brighter color compound layer will be observed in the cross-sectional morphology of the nitriding sample, and continuous nitrides will be distributed near the surface [30]. This article describes a new nitriding process for the recrystallization of TA2 alloy low-temperature nitriding composite matrix.…”

Section: Morphology Of Ta2 Alloy Samples Under Different Degrees Of Cold Deformationmentioning

confidence: 99%

Effect of Deformation on the Microstructure of Cold-Rolled TA2 Alloy after Low-Temperature Nitriding

et al. 2021

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In order to improve the low hardness and poor wear resistance of TA2, this paper proposes a composite process of cold-rolling and low-temperature plasma nitriding with recrystallization. This composite modification process can effectively achieve the dual goals of modifying the matrix structure and surface of TA2 alloy simultaneously. The cold-rolling experimental results indicate that when the deformation rate increases, the small-sized grains in the sample increase significantly, and the grain orientation changes from TD (transverse direction) to RD (rolling direction) and then to TD. The nitriding experimental results indicate that the {0001} basal surface texture deflected from the TD direction to the RD direction, {10-10} cylindrical texture components gradually increased, and the special orientation phenomenon of cylindrical and conical texture disappeared, it can be seen that an increase in the deformation rate promotes recrystallization. The XRD test results indicate that after low-temperature nitriding, metastable nitriding phase TiN0.26 is formed on the surface of TA2. The SEM morphology of the cross-section shows that a relatively special nitrided zone is formed, and mechanical performance test results indicate the wear resistance and hardness of the alloy increased.

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Section: Morphology Of Ta2 Alloy Samples Under Different Degrees Of Cold Deformationmentioning

confidence: 99%

Effect of Deformation on the Microstructure of Cold-Rolled TA2 Alloy after Low-Temperature Nitriding

et al. 2021

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“…This shockwave‐involved process is different from the reported preparation methods of TiN triggered only by a simple photothermal process. [ 20 ] As shown in Figure 1a, the nanostructure formation process occurs on the surface of the Ti foil with the presence of pulsed laser irradiation. Ablation typically takes place on a timescale of picosecond (onset) to a fraction of nanosecond (complete), where an extreme environment of high temperature and high pressure can be instantaneously formed.…”

Section: Resultsmentioning

confidence: 99%

Laser‐Induced Transient Self‐Organization of TiN _x Nano‐Filament Percolated Networks for High Performance Surface‐Mountable Filter Capacitors

et al. 2023

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“…TiN-coated Ti6Al4V alloy also demonstrated biocompatibility [14] and reduction of ion release rate [15] compared to uncoated alloy. Nonetheless, studies of cell proliferation and differentiation on TiN-coated materials are contradictory: several papers report no difference in proliferation compared to controls [16,17], while other studies demonstrate an increase in proliferation [18]. Moreover, concerns were raised about PVD-coated Ti6Al4V with TiN because it suffered from coating failure due to either defects in the film [19] or higher difference in elastic modulus of Ti6Al4V substrate and TiN film [14].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical, Tribological and Biocompatible Performance of Electron Beam Modified and Coated Ti6Al4V Alloy

Nikolova

Ormanova

Nikolova

et al. 2021

IJMS

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Vacuum cathodic arc TiN coatings with overlaying TiO2 film were deposited on polished and surface roughened by electron beam modification (EBM) Ti6Al4V alloy. The substrate microtopography consisted of long grooves formed by the liner scan of the electron beam with appropriate frequencies (500 (AR500) and 850 (AR850) Hz). EBM transformed the α + β Ti6Al4V mixed structure into a single α’-martensite phase. Тhe gradient TiN/TiO2 films deposited on mechanically polished (AR) and EBM (AR500 and AR850) alloys share the same surface chemistry and composition (almost stoichiometric TiN, anatase and rutile in different ratios) but exhibit different topographies (Sa equal to approximately 0.62, 1.73, and 1.08 μm, respectively) over areas of 50 × 50 μm. Although the nanohardness of the coatings on AR500 and AR850 alloy (approximately 10.45 and 9.02 GPa, respectively) was lower than that measured on the film deposited on AR alloy (about 13.05 GPa), the hybrid surface treatment offered improvement in critical adhesive loads, coefficient of friction, and wear-resistance of the surface. In phosphate buffer saline, all coated samples showed low corrosion potentials and passivation current densities, confirming their good corrosion protection. The coated EBM samples cultured with human osteoblast-like MG63 cells demonstrated increased cell attachment, viability, and bone mineralization activity especially for the AR500-coated alloy, compared to uncoated polished alloy. The results underline the synergetic effect between the sub-micron structure and composition of TiN/TiO2 coating and microarchitecture obtained by EBM.

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Laser nitriding of titanium surfaces for biomedical applications

Cited by 32 publications

References 44 publications

Effect of Deformation on the Microstructure of Cold-Rolled TA2 Alloy after Low-Temperature Nitriding

Effect of Deformation on the Microstructure of Cold-Rolled TA2 Alloy after Low-Temperature Nitriding

Laser‐Induced Transient Self‐Organization of TiN _x Nano‐Filament Percolated Networks for High Performance Surface‐Mountable Filter Capacitors

Electrochemical, Tribological and Biocompatible Performance of Electron Beam Modified and Coated Ti6Al4V Alloy

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Laser nitriding of titanium surfaces for biomedical applications

Cited by 32 publications

References 44 publications

Effect of Deformation on the Microstructure of Cold-Rolled TA2 Alloy after Low-Temperature Nitriding

Effect of Deformation on the Microstructure of Cold-Rolled TA2 Alloy after Low-Temperature Nitriding

Laser‐Induced Transient Self‐Organization of TiN x Nano‐Filament Percolated Networks for High Performance Surface‐Mountable Filter Capacitors

Electrochemical, Tribological and Biocompatible Performance of Electron Beam Modified and Coated Ti6Al4V Alloy

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Laser‐Induced Transient Self‐Organization of TiN _x Nano‐Filament Percolated Networks for High Performance Surface‐Mountable Filter Capacitors