The corrosion/wear mechanisms of Ti–6Al–4V alloy for different scratching rates

Komotori, Jun; Hisamori, Noriyuki; Ohmori, Yosuke

doi:10.1016/j.wear.2006.11.025

Cited by 61 publications

(31 citation statements)

References 33 publications

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“…There is general agreement that the wear processes, which take place in the femoral bone‐stem interface of the Ti‐6Al‐4V hip implants accelerate their corrosion in the body . On the other hand, the investigation on the synergistic effect of wear and corrosion mechanisms involved in the implant degradation showed that the α + β ‐type Ti‐6Al‐4V and Ti‐6Al‐7Nb alloys possess the best combination of corrosion and wear resistance, although the β ‐type alloys display excellent corrosion resistance .…”

Section: Introductionmentioning

confidence: 99%

Electrochemical behaviour of Ti‐6Al‐4V alloy with different microstructures in a simulated bio‐environment

Cvijović‐Alagić

Cvijović

Bajat

et al. 2016

Materials & Corrosion

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The electrochemical behaviour of the Ti-6Al-4V ELI alloy with different microstructures was investigated in Ringer's solution at 25 8C. It was found that the properties of both inner barrier and outer porous layers of the passive film were dependent on the microstructural morphology and distribution of the alloying elements resulting in various amounts of their oxides incorporated in the TiO 2 matrix. A more resistant and capacitive barrier layer formed on the alloy with fully lamellar, martensitic and globular microstructures in different thickness assured its high corrosion protection. The improved corrosion resistance of the alloy with equiaxed microstructure was provided by the existence of the larger amounts of the Al 2 O 3 and V 2 O 5 oxides, contributing to higher resistance of the outer porous layer. The Al 2 O 3 amount is smaller than that of the V 2 O 5 oxide due to its higher dissolution, especially in the case of the alloy with fully lamellar microstructure, resulting in the formation of a more porous outer layer.

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Section: Introductionmentioning

confidence: 99%

Electrochemical behaviour of Ti‐6Al‐4V alloy with different microstructures in a simulated bio‐environment

Cvijović‐Alagić

Cvijović

Bajat

et al. 2016

Materials & Corrosion

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“…This passive film, which spontaneously covers the metal surface, is about 1-4 nm thick [11][12][13][14] and it is composed mainly of TiO 2 oxide [15][16][17][18][19]. Different techniques can increase the thickness of oxide films such as some nitric acid passivation protocols [20].…”

Section: Introductionmentioning

confidence: 99%

Wear behaviour of nitric acid passivated cp Ti and Ti6Al4V

Masmoudi

Assoul

Wéry

et al. 2009

Journal of Alloys and Compounds

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“…Electrochemical corrosion was performed using a potentiostat (Gamry PC4, Software: LV500, C3 Prozess- und Analysentechnik GmbH, Haar, Germany) with a three-electrode assembly combined with two sense electrodes [20]. Each specimen was used as the working electrode and the counter and reference electrodes were a graphite rod and silver/silver chloride (Ag/AgCl), respectively (Figure 1b).…”

Section: Methodsmentioning

confidence: 99%

Fretting Corrosion Behavior of Experimental Ti-20Cr Compared to Titanium

Sawada

Schille²,

Almadani

et al. 2017

Materials

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Experimental cast titanium alloys containing 20 mass% chromium (Ti-20Cr) show preferable mechanical properties and a good corrosion resistance. This study evaluated the fretting corrosion behavior of Ti-20Cr. Ti-20Cr (n = 4) and commercially pure titanium (CP-Ti, n = 6) disk specimens were used. The fretting corrosion test was performed by electrochemical corrosion at 0.3 V in 0.9% saline solution and mechanical damage using 10 scratching cycles with three different scratching speeds (10–40 mm/s) at 10 N. After testing, the activation peak, repassivation time and surface morphology of each specimen were analyzed. The differences between the results were tested by parametric tests (α = 0.05). The average activation peaks were significantly higher in CP-Ti than in Ti-20Cr (p < 0.01), except at 20 mm/s. In the series of scratching speeds, faster scratching speeds showed higher activation peaks. The maximum activation peaks were also higher in CP-Ti. Slight differences in the repassivation time were observed between the materials at every scratching speed; faster scratching speeds showed shorter repassivation times in both materials (p < 0.05). CP-Ti showed severe damage and significantly higher wear depth than Ti-20Cr (p < 0.05). In conclusion, adding chromium to titanium reduced surface damage and improved the fretting corrosion resistance.

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The corrosion/wear mechanisms of Ti–6Al–4V alloy for different scratching rates

Cited by 61 publications

References 33 publications

Electrochemical behaviour of Ti‐6Al‐4V alloy with different microstructures in a simulated bio‐environment

Electrochemical behaviour of Ti‐6Al‐4V alloy with different microstructures in a simulated bio‐environment

Wear behaviour of nitric acid passivated cp Ti and Ti6Al4V

Fretting Corrosion Behavior of Experimental Ti-20Cr Compared to Titanium

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