Evaluation of physicochemical properties of surface modified Ti6Al4V and Ti6Al7Nb alloys used for orthopedic implants

Basiaga, Marcin; Kajzer, W.; Walke, W.; Kajzer, Anita; Kaczmarek, Marcin

doi:10.1016/j.msec.2016.07.042

Cited by 36 publications

(11 citation statements)

References 28 publications

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“…Meanwhile, the resistance of the inner and outer layer of the thermally oxidized sample were also higher than the untreated one, representing better protective film properties and a higher corrosion resistance. However, the resistance of TiO 2 formed by thermal oxidation is lower than other methods such as ALD and anodic oxidation [26,27].…”

Section: Untreatedmentioning

confidence: 99%

“…This is because the thermal oxidation process is accompanied by forming a thicker protective oxide film which acts as a barrier, separating the substrate and the corrosive medium or extending the time corrosive medium meets the substrate [24,25]. Compared to the E corr of TiO 2 layer deposited by atomic layer deposition and anodic oxidation [26,27], the larger value is observed after thermal oxidation. It could be due to different TiO 2 structure prepared by these methods.…”

Section: Tribocorrosion Testmentioning

confidence: 99%

“…The oxide films on titanium have been confirmed to offer enhanced tribological protection in both dry and lubricated conditions. They also provide additional corrosion protection as a physical or chemical barrier layer [23][24][25][26][27][28][29][30][31]. The tribocorrosion behavior of the thermally oxidized commercially pure titanium have been studied before [32,33].…”

Section: Introductionmentioning

confidence: 99%

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The Tribocorrosion and Corrosion Properties of Thermally Oxidized Ti6Al4V Alloy in 0.9 wt.% NaCl Physiological Saline

et al. 2018

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Thermal oxidation of Ti6Al4V was carried out at 700 °C for 5 h in air atmosphere. The characteristics of morphology and structure, micro-hardness, and tribocorrosion behavior in 0.9 wt.% NaCl solution of thermally oxidized Ti6Al4V alloys were investigated and compared with those of the untreated one. The scanning electron microscope (SEM) and glow discharge spectrometer (GDS) results reveal that the oxide layer is completely coated on the substrate, which is a bilayer structure consisted of oxide film and oxygen diffusion zone (ODZ). X-ray diffraction (XRD) and Raman measurements reveal the rutile phase as the dominant phase. The micro-hardness and surface roughness (Ra) increase about 1.63 and 4 times than those of the untreated one. Thermally oxidized sample obtains corrosion and tribocorrosion resistance property in 0.9 wt.% NaCl solution. The corrosion potential has a more than 500 mV anodic shift, the corrosion current density decreases about 80%. The total material loss volume is reduced by almost an order of magnitude under tribocorrosion behavior, which is due to the improvement of the micro-hardness of the oxide layer and ODZ that reduce the corrosion and the synergistic effect of corrosion and wear.

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Section: Untreatedmentioning

confidence: 99%

Section: Tribocorrosion Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Tribocorrosion and Corrosion Properties of Thermally Oxidized Ti6Al4V Alloy in 0.9 wt.% NaCl Physiological Saline

et al. 2018

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“…Due to the limited number of metal biomaterials commonly used for implants and their limitations, currently the basic direction of research is the modification of their surface [1], [25]. Its main goals are the improvement of biotolerance and functionalization aimed at improving the quality of the adhesion between the implant and the surrounding tissues [16], [24].…”

Section: Introductionmentioning

confidence: 99%

Biodegradable polymer coatings on Ti6Al7Nb alloy

Szewczenko¹,

Kajzer²,

Kajzer³

et al. 2019

Acta Bioeng Biomech

Self Cite

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The aim of the study was to determine the influence of long term exposure to Ringer's solution of biodegradable polymer coatings containing an active substance on the Ti6Al7Nb alloy substrate on the physical and chemical properties of the coatings and the degradation process of the metal substrate. The studies used poly(L-lactide-co-trimethylene carbonate) P(L/TMC), poly(L-lactide-co-trimethylene carbonate-glycolide) P(L/TMC/G) and poly(D,L-lactide-glycolide) (PLGA) coatings applied to the anodically oxidized Ti6Al7Nb alloy by means of dipping method (1, 2 and 3 dips). The polymer coatings contained ciprofloxacin. Roughness and wettability tests were carried out on the substrate and polymer coatings, the pitting corrosion resistance of the substrate and samples with polymer coating was determined, the number of metallic ions released to the solution from the coated and uncoated samples was determined as well as the adhesion of polymer coatings. The research was supplemented by microscopic observations. The results of the research indicate different influence of exposure to Ringer's solution on the physical and chemical properties of biodegradable polymer coatings containing ciprofloxacin and the course of the degradation process of the metal substrate.

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“…Polarization curves of CP‐Ti specimens were almost the same expect for a slight difference in potential values. All titanium‐based specimens yielded strong passivation, which is typical for titanium and its alloys, ranging almost 1,500 mV. In the case of the Ti6Al4V alloy, strong and apparent passivation was evident for both solutions but only in SBF, a breakdown was observed just below the 1 V mark.…”

Section: Resultsmentioning

confidence: 87%

Comparison of SBF and DMEM in terms of electrochemical properties of common metallic biomaterials

Bayrak

Asl

2019

Materials & Corrosion

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Corrosion behavior is an important parameter for metallic biomaterials used in the body environment. To mimic bodily fluids, simulated body fluid (SBF) has been used extensively. Even though many studies focus on corrosion inside SBF, SBF has a very time consuming and delicate preparation procedure and contains no essential and organic components for the cell environment, which may affect corrosion kinetics. We aimed to investigate whether corrosion behavior or kinetics change in different solutions, SBF and Dulbecco's modified Eagle medium (DMEM). For this purpose, five commonly used metallic biomaterials, AISI 316 stainless steel, CoCrMo alloy, CP‐Ti, Ti6Al4V, and Ti6Al7Nb were subjected to open circuit measurements, cyclic polarization, and electrochemical impedance spectroscopy. Quantitative analyses were performed and surface topography was investigated via scanning electron microscope and a roughness tester. We observed that the materials exhibited similar behaviors in SBF and DMEM but the corrosion kinetics were somewhat different and the results obtained from DMEM were time dependent.

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Evaluation of physicochemical properties of surface modified Ti6Al4V and Ti6Al7Nb alloys used for orthopedic implants

Cited by 36 publications

References 28 publications

The Tribocorrosion and Corrosion Properties of Thermally Oxidized Ti6Al4V Alloy in 0.9 wt.% NaCl Physiological Saline

The Tribocorrosion and Corrosion Properties of Thermally Oxidized Ti6Al4V Alloy in 0.9 wt.% NaCl Physiological Saline

Biodegradable polymer coatings on Ti6Al7Nb alloy

Comparison of SBF and DMEM in terms of electrochemical properties of common metallic biomaterials

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