Corrosion resistance of Ti–6Al–4V with nanostructured TiO 2 coatings

Chen, Qian; McEwen, Gerald D.; Zaveri, Nikita; Ramji, Karpagavalli; Zhou, Anhong

doi:10.1016/b978-0-12-812291-4.00009-1

Cited by 3 publications

(5 citation statements)

References 39 publications

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“…In addition, when the motion starts for tribocorrosion testing, a drop is often expected in OCP since the mechanical movements would remove the protective layer on the surface [25,26,37]. Ti6Al4V is known for its superior corrosion resistance which is mainly because of the passive oxide film (in nanometre scale) on the surface [9,38], and thus its resistance drops dramatically when the passive layer is removed, which can be seen from our results in Figure 3. However, CDC shows a smaller potential drop than Ti6Al4V when the motion started.…”

Section: Discussionmentioning

confidence: 99%

In vitro tribocorrosion evaluation of carbide-derived carbon (CDC) for hip implants

Sun,

Kinnerk,

Mirshed

et al. 2023

Advances in Applied Ceramics: Structural, Functional and Biocer

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Carbide-derived carbon (CDC) was previously proposed as a surface modification method for hip implant applications since it showed excellent tribocorrosion performance under opencircuit potential (OCP) conditions. Nonetheless, a systematic evaluation of the CDC's tribocorrosion properties was still missing. Therefore, our objective is to test CDC's tribocorrosion performance under various electrochemical conditions and to identify the synergism between wear and corrosion. Based on the findings, the variations in OCP for CDC (0.626 mV) are smaller than Ti6Al4V (1.91 mV), and CDC showed lower induced current than T6Al4V for all potentials, suggesting CDC is more stable than Ti6Al4V under tribocorrosive conditions. Eventually, the weight loss of Ti6Al4V (50.662 ± 5.19 μg) was found to be significantly higher than that of CDC (4.965 ± 5.19 μg), which agrees with the electrochemical results. In summary, CDC showed better tribocorrosion performance than Ti6Al4V and was determined as an Antagonism regime.

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Section: Discussionmentioning

confidence: 99%

In vitro tribocorrosion evaluation of carbide-derived carbon (CDC) for hip implants

Sun,

Kinnerk,

Mirshed

et al. 2023

Advances in Applied Ceramics: Structural, Functional and Biocer

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“…The weight loss (W) was calculated from Equation 3 (Hamil et al, 2020), Table (2 Also, open-circuit potential (OCP) is the other typical technique to study the corrosion. Figure (5) shows the variation of OCP with immersion time for TiN coated Ti-6Al-4V alloy in 3.5 NaCl% solution at 25 o C. The initial OCP for uncoated Ti-6Al-4V was -0.772 V, the potential gradually increased to be -0.512 and 0.067 V for the samples TiN coated before and after thermal annealing.…”

Section: Corrosion Measurementsmentioning

confidence: 99%

“…Tafel analysis is a well-established electrochemical technique, and the current is recorded when the open-circuit potential is imposed on a metal sample. The corrosion rate calculated from combined Equation 1 and 2 (Chen et al, 2012;Hamil et al, 2020), polarization resistance (R p ) has an inverse relationship with corrosion current.…”

Section: Corrosion Measurementsmentioning

confidence: 99%

MAGNETRON SPUTTERED NANOCRYSTALLINE TiN THIN FILMS AND CORROSION PROPERTIES

Hamil¹,

Khalaf²,

Al-Shakban³

2020

PTQ

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In this report, TiN nanocrystalline thin films were deposited on glass and Ti-6Al-4V substrates using a DC-magnetron sputtering technique. The TiN films were sputtered using a pure Ti target (99.9%) with 40W of power in Ar/N2 gas mixture atmosphere. The structure of the TiN films was characterized by X-Ray diffraction, as prepared films exhibited a (200) preferred orientation, while film annealed at 500 °C shows the (111), (200) and (311). Polycrystalline, cubic, (111)-orientated TiN films were produced by annealing temperature of 500 °C. The effect of deposited temperature on the microstructural morphologies of the thin films was studied by Field Emission Scanning Electron Microscope (FESEM). The particle size of the sputtered TiN films ranged from 50 to 70 nm and was strongly influenced by annealing temperatures, the morphology of the films deposited before and after annealing has a characteristic agglomeration of particles. Potentiodynamic polarization analysis of the TiN films confirms the inverse relationship between polarization resistance and corrosion current. The biocorrosion measurements for TiN films deposited on the Ti-6Al-4V substrate in 3.5% NaCl solution have also been obtained. Clear improvement in the corrosion resistance was observed rather than for untreated, especially for thermally annealed (500 oC) TiN/Ti-6Al-4V samples. The corrosion rate was 0.1458 mm/y for the uncoated sample, while 2.68510-4 mm/y for TiN/Ti-6Al-4V in samples after annealing. The average corrosion potential calculated was - 0.117 V. The results confirmed that coated alloys with 500 °C thermally treated exhibited a better electrochemical behavior compare with uncoated and non-thermally treated alloys possibly due to the better cohesion degree of the coatings.

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“…However, the research lacked the information of the corrosion rate, the surface topography, as well as the thickness of the layers. Qian Chen et al [11] fabricated TiO2 nanoparticles-coated Ti-6Al-4V implant by the spin-coating method using chemicals including TiO2 powder, Triton-X100, acetyl acetone… The corrosion behavior of TiO2/Ti-6Al-4V material in simulated biological NaCl solution was studied by electrochemical technique. The results indicated that the average corrosion potential estimated of the uncoated Ti-6Al-4V was −0.316 V, while that of the heat-treated TiO2/Ti-6Al-4V material at 550°C was −0.07 V. Moreover, the corrosion current of the uncoated Ti-6Al-4V electrode was 0.004 µA higher that of TiO2 nanoparticle-coated Ti-6Al-4V substrate, 0.002 µA.…”

Section: Introductionmentioning

confidence: 99%

“…(2) Corrosion behavior of materials before and after covering by TiO2 layer can be evaluated by accelerated polarization tests, performed by the electrochemical technique. Generally, to fabricate the stable TiO2 passive layers, the scientists used the methods such as anodic oxidation, [9] oxidizing and oxynitriding in low temperature plasma, [10] spincoating, [11,13] subzero anodic spark oxidation. [12] Generally, these methods were effective and the corrosion resistance of Ti metal/alloy coated by the TiO2 passive layers was evaluated well.…”

Section: Introductionmentioning

confidence: 99%

Improving corrosion resistance of pure titanium by simple and controlled oxidation for biomedical applications

Linh,

Tung,

Tuan

2023

Vietnam Journal of Chemistry

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In this study, the TiO2 passive layer was formed on a pure titanium substrate by simple oxidation in an aqueous solution of H2O2 35 wt.%. In order to determine the appropriate time for the oxidation of the pure titanium substrate, the corrosion rate of the metal in the solution of H2O2 was investigated. The electrochemical behaviour of the TiO2 passive layer on the Ti substrate was investigated in Hank's solution at 37.5°C. The results show that Tafel‐plot extrapolations from the potentiodynamic curves revealed a substantial improvement in the corrosion potentials for the TiO2 coatings. According to the theory calculation, to obtain the optimal surface roughness values, around 100 nm to 300 nm, the oxidation time in H2O2 35 wt.% solution is controlled in the range of 2‐5 hours. The results were explained by considering the effects of crystal morphology and roughness. The results indicated that the controlled oxidation‐prepared TiO2 coatings have attractive prospects for use in biomedical applications since better corrosion protection of pure Ti can be expected.

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Corrosion resistance of Ti–6Al–4V with nanostructured TiO 2 coatings

Cited by 3 publications

References 39 publications

In vitro tribocorrosion evaluation of carbide-derived carbon (CDC) for hip implants

In vitro tribocorrosion evaluation of carbide-derived carbon (CDC) for hip implants

MAGNETRON SPUTTERED NANOCRYSTALLINE TiN THIN FILMS AND CORROSION PROPERTIES

Improving corrosion resistance of pure titanium by simple and controlled oxidation for biomedical applications

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