Microstructure and Corrosion Behaviour of Laser Metal Deposited Ti6Al4V/Cu Composites in 3.5% Sea Water

Erinosho, Mutiu F.; Akinlabi, Esther Titilayo; Pityana, Sisa

doi:10.1016/j.matpr.2015.07.028

Cited by 23 publications

(10 citation statements)

References 9 publications

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“…Ti-base alloys have outstanding properties that enable them to be used in numerous applications [1][2][3][4]. These alloys have proven to be employed in the marine, military, offshore, medical, and many other applications [5][6][7][8][9]. The use of Ti-base alloys in various fields comes from its super biocompatibility, excellent mechanical properties, and great corrosion resistance in many aggressive environments [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Beneficial Effects of Vanadium Additions on the Corrosion of Ti6AlxV Alloys in Chloride Solutions

Sherif

Abdo

Alharthi

2020

Metals

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The beneficial effects of V addition on the corrosion of a newly manufactured Ti6AlxV (x = 2 wt %, 4 wt %, 6 wt %, and 8 wt %) alloys after various exposure periods in 3.5% NaCl solutions were reported. The Ti6AlxV were produced from their raw powders using mechanical alloying. Several electrochemical techniques such as electrochemical impedance spectroscopy, cyclic potentiodynamic polarization, and potentiodynamic current versus time at 300 mV experiments were conducted. The surface morphology and the elemental analysis were performed using scanning electron microscopy and energy dispersive X-ray analyses. All results were consistent with each other revealing that the increase of V content increases the resistance of the alloys against corrosion. The increase of corrosion resistance was achieved by the role of V in decreasing the rate of corrosion as a result of the formation of oxide films on the surface of the alloys. This effect was found to increase with prolonging the immersion time of the Ti6AlxV alloys in the test medium from 1 h to 24 h and further to 48 h. particularly in implantation systems [24][25][26]. Other titanium alloys like Ti6Al7Nb and Ti13Cu4.5Ni, in addition to the Ti6Al4V alloy, have been selected as the only choice for the use in orthopedic implants [27]. It has also been reported [28][29][30][31][32][33][34] that resistance versus corrosion in-vitro to form a stable oxide film in harsh media is the main reason for these alloys to be popular and applicable in the field of biomedical applications.In this work, we aimed to produce a series of Ti-base alloys, namely Ti6Al2V, Ti6Al4V, Ti6Al6V, and Ti6Al8V alloys, from its pure powders, and reported their corrosion after immersion in 3.5% NaCl solution for different periods of time, namely 1 h, 24 h, and 48 h. The effect of increasing V content within the fabricated alloys on their corrosion in the test solution was reported using various electrochemical techniques like polarization, electrochemical impedance spectroscopy, and potentiostatic current-time at 300 mV (Ag/AgCl). Other surface analysis methods, including scanning electron microscopy (SEM) images and energy dispersive X-ray (EDX) spectra, were performed to ensure the compositions, the surface morphology, and expected corrosion products that might be formed after corrosion due to the reaction between the surfaces of the alloys and the chloride test solution.

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Section: Introductionmentioning

confidence: 99%

Beneficial Effects of Vanadium Additions on the Corrosion of Ti6AlxV Alloys in Chloride Solutions

Sherif

Abdo

Alharthi

2020

Metals

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“…Ti-base alloys have exceptional properties such as excellent mechanical properties, great biocompatibility, and outstanding corrosion resistance against various aggressive electrolytes [1][2][3][4][5]. For that, these alloys have been employed as a standard engineering materials in numerous industrial applications such as their potential use in medical, military, marine, and offshore application [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Manufacturing of Ti-6%Al and Ti-6%Al-4%V Alloys and Their Corrosion in Sodium Chloride Solutions

2020

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The current research aims at the manufacturing of Ti-6%Al alloy and Ti-6%Al-4%V alloy using the mechanical alloying method and studying their corrosion behavior after various periods of immersions in 3.5% NaCl solutions. The fabricated alloys were also evaluated using spectroscopic techniques such as X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray spectroscopy analyses. The corrosion behavior was studied using potentiodynamic polarization, electrochemical impedance spectroscopy, and chronoamperometric current-time electrochemical methods. It is confirmed that the presence of 4% V greatly decreases the uniform corrosion of the Ti-6%Al alloy as a result of the role of V in decreasing the cathodic, anodic, and corrosion current, and the rate of corrosion along with increasing the corrosion resistance. Increasing the time of immersion to 24 h and further to 48 h highly decreased the corrosion of the alloys. The presence of 4% V and extending the time of exposure thus increase the resistance against corrosion via decreasing the corrosion of Ti-6%Al alloy in the chloride test solution. ; writing-original draft preparation, E.-S.M.S. and H.S.A.; writing-review and editing, E.-S.M.S.; supervision, E.-S.M.S.; project administration, E.-S.M.S.; funding acquisition, E.-S.M.S. All authors have read and agreed to the published version of the manuscript.

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“…To further improve the corrosive wear resistance of Ti-6Al-4V alloy, Erinosho et al (2015) found that the addition of Cu reduced the corrosion rate of Al coating, however, its wear resistance was not enhanced. Laser cladded WC-based and microalloyed coatings were investigated to enhance the corrosive-wear resistance of Ti-6Al-4V alloy (Verwimp et al, 2011;Yang et al, 2017), fabricated ZrO 2 /TiO 2 coating with high polarization resistance and low current density on Ti-6Al-4V alloy by laser cladding, which significantly improved its wear resistance (Cui et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Corrosive wear and electrochemical corrosion behaviors of laser thermal sprayed CoCrAlYTaSi coatings in 3.5 Wt.% NaCl solution

Weitong

Dejun

2019

ACMM

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Purpose This paper aims to enhance the corrosive wear and electrochemical corrosion of Ti–6Al–4V alloy. Design/methodology/approach A CoCrAlYTaSi alloy coating was fabricated on Ti–6Al–4V alloy using a laser thermal spraying (LTS). The surface and cross-section morphologies, chemical elements, phases and bonding strength of the obtained coating were analyzed using a scanning electron microscope, energy dispersive spectroscope, X-ray diffraction and scratch test, respectively, The corrosive wear and electrochemical corrosion of CoCrAlYTaSi coating in 3.5 Wt.% NaCl solution were investigated using a wear tester and electrochemical workstation, respectively. Findings The average coefficient of frictions (COFs) of CoCrAlYTaSi coating under the wear loads of 2, 4 and 6 N are 1.31, 1.02 and 0.88, respectively; and the corresponding wear rates are 0.66 × 10−4, 1.10 × 10−4 and 1.30 × 10−4 mm3·N–1·m–1, respectively. The wear mechanism under the wear load of 2 N is abrasive wear, while those under the wear loads of 4 and 6 N are adhesive wear and abrasive wear. The charge transfer resistance of CoCrAlYTaSi coating is 5.368 × 105 Ω·cm2, higher than 2.193 × 105 of the substrate. Originality/value In this study, a CoCrAlYTaSi coating was firstly fabricated on Ti–6Al–4V alloy using a LTS. Its corrosive wear and electrochemical corrosion in 3.5 Wt.% NaCl solution were investigated, which played a protective role of corrosive wear on Ti–6Al–4V alloy.

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Microstructure and Corrosion Behaviour of Laser Metal Deposited Ti6Al4V/Cu Composites in 3.5% Sea Water

Cited by 23 publications

References 9 publications

Beneficial Effects of Vanadium Additions on the Corrosion of Ti6AlxV Alloys in Chloride Solutions

Beneficial Effects of Vanadium Additions on the Corrosion of Ti6AlxV Alloys in Chloride Solutions

Manufacturing of Ti-6%Al and Ti-6%Al-4%V Alloys and Their Corrosion in Sodium Chloride Solutions

Corrosive wear and electrochemical corrosion behaviors of laser thermal sprayed CoCrAlYTaSi coatings in 3.5 Wt.% NaCl solution

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