Improving the corrosion and tribocorrosion resistance of Ni–Co nanocrystalline coatings in NaOH solution

Hassani, Sh.; Raeissi, K.; Azzi, M.; Li, Duanjie; Golozar, M.A.; Szpunar, Jerzy A.

doi:10.1016/j.corsci.2009.06.026

Cited by 82 publications

(27 citation statements)

References 47 publications

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“…It is well known that the magnetic thin films based on iron group metals such as Fe, Co, and Ni possess much better permanent magnetic properties than pure metals [1,2], and the addition of cobalt in electrodeposited nickel is known to develop their properties [3,4]. Electrodeposited Ni-Co thin films with different compositions have potential applications in microelectrical mechanical system (MEMS) and several other industries due to their unique properties such as magnetic, high heat conductivity, good wear resistance, high hardness, and electrocatalytic activity [5][6][7][8][9]. In addition, Ni-Co films also find applications for the traditional protective and decorative purposes [2,10].…”

Section: Introductionmentioning

confidence: 99%

Differences Observed in the Phase Structure, Grain Size–Shape, and Coercivity Field of Electrochemically Deposited Ni–Co Thin Films with Different Co Contents

Saraç

Baykul

Uguz

2015

J Supercond Nov Magn

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Nanostructured Ni-Co thin films were produced using galvanostatic electrodeposition on indium tin oxide (ITO)-coated glass substrates from an aqueous electrolyte solution without stirring at ambient temperature. Different compositions of the films were achieved depending on the Co ion concentration within the electrolyte. From the compositional analysis performed using energy dispersive X-ray (EDX) spectroscopy, the anomalous codeposition was found for all films and an increase in the Co content of the films was observed with increasing Co ion concentration within the electrolyte. The X-ray diffraction (XRD) analyses revealed that the phase structure of the electrodeposited Ni-Co thin films changes from single face-centered cubic (FCC) to a mixture of FCC and hexagonal closepacked (HCP) with the Co content within the films. It was also observed that the mean crystallite size estimated by applying the Scherrer method gradually decreases as the Co content within the films increases. The scanning electron microscopy (SEM) employed for the surface morphology showed that the size and shape of the grains formed on the film surface are strongly dependent on Co content within the films. Magnetic measurements performed by vibrating sample magnetometer (VSM) revealed that the films with different Co contents exhibit different magnetic properties;

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Section: Introductionmentioning

confidence: 99%

Differences Observed in the Phase Structure, Grain Size–Shape, and Coercivity Field of Electrochemically Deposited Ni–Co Thin Films with Different Co Contents

Saraç

Baykul

Uguz

2015

J Supercond Nov Magn

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“…Other designs feature the sample moving against the stationary counter-body. Furthermore, while linear reciprocating motion is common, a few systems employ a circular track, where the pin or ball moves on the sample in a continuous or intermittent circular path, with or without reciprocation [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]. In some cases, a warm water bath surrounds the electrochemical cell to mimic body temperature [25,29,33].…”

Section: Non-uniformity In Literaturementioning

confidence: 99%

“…It is assumed that corrosion outside of the wear track is negligible and therefore not considered for calculation of K WC , K W ; and K C [3,4,25,46]. The weight loss due to corrosion can be estimated using Faraday's Law:…”

Section: Pilot Studymentioning

confidence: 99%

“…• While not mentioned specifically in all of the studies, the placement of counter and reference electrodes (CE and RE, respectively) relative to the working electrode (WE) was vital to prevent noise and collect accurate data [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]. Piezoelectric force transducer for normal and frictional force, a LabView software…”

Section: Non-uniformity In Literaturementioning

confidence: 99%

“…• All electrochemical cells, including the sample holder, were constructed of materials resistant to corrosion, such as polyvinyl chloride (PVC) [21-23, 27, 31], Teflon [24], acrylic [34], and polypropylene [30], while many others did not mention the choice of material [25,26,28,29,32,33,35,36]. Similar to the considerations for the counter-body, any leached material from the electrochemical cell into the corrosion solution may alter the tribological dynamics (third-body wear) and reaction kinetics.…”

Section: Non-uniformity In Literaturementioning

confidence: 99%

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Design, Development, and Testing of a Compact Tribocorrosion Apparatus for Biomedical Applications

et al. 2014

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Orthopedic and dental implants experience the synergistic effect of wear and corrosion, i.e., tribocorrosion, which has been a major contributor to the premature failure of implants. This work focuses on the development of a compact and cost-effective tribocorrosion apparatus for the investigation of fretting and wear. The custom-built apparatus is validated with an analysis of the tribocorrosion behavior of Ti6Al-4V disks in artificial saliva (pH = 6.5, T = 37°C). Electrochemical impedance spectroscopy, potentiodynamic, free potential, and potentiostatic analyses were used for electrochemical characterization of Ti-6Al-4V disks. White light interferometry and scanning electron microscopy were used to analyze wear scars on the Ti-6Al-4V disks. Total wear loss was calculated to be 12.4 ± 1.5 lg, and the synergistic weight loss ratio (0.78 ± 0.1) showed that Ti-6Al-4V disks experience synergy of wear and corrosion, with wear being the dominant component.

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Corrosion and tribocorrosion behaviour of super‐thick diamond‐like carbon films deposited on stainless steel in NaCl solution

Wang

et al. 2016

Surface & Interface Analysis

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Super‐thick diamond‐like carbon (DLC) film is a potential protective coating in corrosive environments. In the present work, three kinds of DLC films whose thickness and modulation periods are 4 µm and 3, 21 µm and 17 and 21 µm and 7, respectively, were fabricated on stainless steel. The effect of different thickness and modulation periods on corrosion and tribocorrosion behaviour of the DLC‐coating stainless steel was investigated in 3.5 wt% NaCl aqueous solution by a ball‐on‐flat tribometer equipped with a three‐electrode electrochemical cell. The DLC‐coating stainless steel served as a working electrode, and its OCP and potentiodynamic polarization were monitored before and during rubbing. The wear–corrosion mechanism of the DLC films was investigated by SEM. The results showed that the increasing thickness can prolong significantly lifetime of DLC films in NaCl aqueous solution. In particular, the modulation period has a significant impact on the tribocorrosion resistance of the DLC super‐thick films. The study suggested that the increasing thickness of compressive stress layer could suppress film damage by reducing crack propagation rate. Thus, the super‐thick DLC film with thickness of 21 µm and 7 periods presented the best tribocorrosion resistance among all studied films. Copyright © 2016 John Wiley & Sons, Ltd.

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Improving the corrosion and tribocorrosion resistance of Ni–Co nanocrystalline coatings in NaOH solution

Cited by 82 publications

References 47 publications

Differences Observed in the Phase Structure, Grain Size–Shape, and Coercivity Field of Electrochemically Deposited Ni–Co Thin Films with Different Co Contents

Differences Observed in the Phase Structure, Grain Size–Shape, and Coercivity Field of Electrochemically Deposited Ni–Co Thin Films with Different Co Contents

Design, Development, and Testing of a Compact Tribocorrosion Apparatus for Biomedical Applications

Corrosion and tribocorrosion behaviour of super‐thick diamond‐like carbon films deposited on stainless steel in NaCl solution

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