Influence of the annealing treatment on the structure, morphology, and corrosion resistance of sputtered Zr‐Ti‐Si‐O coatings used for biomedical applications

Cotruț, Cosmin M.; Braic, Laurentiu; Vrânceanu, Diana Maria; Kiss, A.; Dinu, Mihaela; Bâlâceanu, M.; Braic, V.; Vlădescu, Alina

doi:10.1002/maco.201609200

Cited by 5 publications

(3 citation statements)

References 52 publications

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“…To begin with, nitride-based compounds, such as TiN, ZrN, CrN, and TiAlN, have been suggested as hard coatings for surface modification, surface barriers, or electrodes [25][26][27][28][29][30] ]. In order to combine superior mechanical properties, e.g., hardness and adhesion to the substrate, with enhanced corrosion resistance, new compounds, such as oxynitrides, of the transitional metals with low oxygen content have been developed [31][32][33][34][35] due to their superior chemical stability, notable optical, electronic, and mechanical properties [36][37][38], with superior mechanical properties compared to those reported for the oxides [39][40][41][42]. The interest in titanium oxynitride films is due to the pronounced dependence of the oxynitrides properties on the N/O ratio [33,34,[43][44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

et al. 2020

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The reactive cathodic arc deposition technique was used to produce Ti nitride and oxynitride coatings on 304 stainless steel substrates (SS). Both mono (SS/TiN, SS/TiNO) and bilayer coatings (SS/TiN/TiNO and SS/TiNO/TiN) were investigated in terms of elemental and phase composition, microstructure, grain size, morphology, and roughness. The corrosion behavior in a solution consisting of 0.10 M NaCl + 1.96 M H2O2 was evaluated, aiming for biomedical applications. The results showed that the coatings were compact, homogeneously deposited on the substrate, and displaying rough surfaces. The XRD analysis indicated that both mono and bilayer coatings showed only cubic phases with (111) and (222) preferred orientations. The highest crystallinity was shown by the SS/TiN coating, as indicated also by the largest grain size of 23.8 nm, which progressively decreased to 16.3 nm for the SS/TiNO monolayer. The oxynitride layers exhibited the best in vitro corrosion resistance either as a monolayer or as a top layer in the bilayer structure, making them a good candidate for implant applications.

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Section: Introductionmentioning

confidence: 99%

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

et al. 2020

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“…The tests were performed in 3.5%NaCl solution at 25 o C for 3h. The Potential vs. Elapsed Using open circuit potential (E oc ) as criterion the most positive values reveal better corrosion behavior [13], in this case P2, P7, P8 and P1 exhibited the best behavior as observed according to the variation presented in figure 4. Using the corrosion potential (E cor ) as criterion the more electro-positive values suggest better corrosion behavior [14], from figure 5 sample P7 would be most corrosion resistant, followed by P2, P1, P4 and P8.…”

Section: Resultsmentioning

confidence: 68%

Corrosion Behavior of Welded Repaires for Water Turbine Blades

Ciocoiu¹,

Coman²,

Trante³

et al. 2019

Rev. Chim.

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The immersed components of hydroelectric power plants are permanently in contact with the water stream and their wear occurs by corrosion, erosion and cavitation. This damage is usually repaired by welding: the procedure is fast and reduces plant downtime. Adopting proper weld procedures are crucial for blade performance and to establish a protocol the following experiment was devised: rectangular samples 600x200x15mm were obtained from a discarded blade used in a hydroelectric power plant and in the median region a 3mm deep groove was milled to simulate erosion damage. The damage was repaired by welding using MIG, WIG, MMAW and oxyacetylene techniques using 136L as filler on cold and preheated at 400�C base materials. Specimens from the welded ensembles were obtained and prepared accordingly for corrosion testing. Post corrosion testing studies using the light microscope and scanning electron microscope were performed in order to determine surface damage. At first glance results appear contradictory: the corrosion test results revealed best behavior for MIG weld repairs, on the cold sample, while the corrosion features measured on the exposed area revealed that oxyacetylene welding would be best. Complementary methods are required and currently employed to establish optimum welding procedure parameters for water turbine blade repairs.

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“…Aiming to obtain crystalline coatings, the substrate RF bias was set at −30 V, and the deposition temperature was maintained at (700 ± 4) • C, as previously reported [40]. As known, a high temperature during deposition or during coating annealing improves the coating crystallinity and surface morphology [41,42]. The RF power or the DC current fed on each magnetron are presented in Table 1 along with the labels assigned to the HA-based coatings.…”

Section: Coating and Specimensmentioning

confidence: 99%

SiC- and Ag-SiC-Doped Hydroxyapatite Coatings Grown Using Magnetron Sputtering on Ti Alloy for Biomedical Application

et al. 2022

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SiC- and Ag-SiC-doped hydroxyapatite (HA) coatings were deposited via magnetron sputtering aiming at increased corrosion protection of Ti-10Nb-10Zr-5Ta alloy in simulated body fluid environment and superior mechanical properties compared to plain hydroxyapatite. The coatings had a total thickness of about 350 nm. The X ray diffraction patterns indicate that HA coatings are polycrystalline with a hexagonal structure and the addition of SiC determined the coating amorphization. All coatings presented a lower roughness compared to the Ti alloy and were hydrophilic. Ag-SiC-HA coating presented the best corrosion resistance and tribological parameters. All coatings were biocompatible, as ascertained via indirect cytocompatibility studies conducted on Vero cells.

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Influence of the annealing treatment on the structure, morphology, and corrosion resistance of sputtered Zr‐Ti‐Si‐O coatings used for biomedical applications

Cited by 5 publications

References 52 publications

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

Corrosion Behavior of Welded Repaires for Water Turbine Blades

SiC- and Ag-SiC-Doped Hydroxyapatite Coatings Grown Using Magnetron Sputtering on Ti Alloy for Biomedical Application

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