Corrosion Resistance Behavior of Single-Layer Cathodic Arc PVD Nitride-Base Coatings in 1M HCl and 3.5 pct NaCl Solutions

Adesina, Akeem Yusuf; Gasem, Zuhair M.; Kumar, A. Madhan

doi:10.1007/s11663-016-0891-7

Cited by 53 publications

(29 citation statements)

References 21 publications

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“…This evidence verifies the optimal homogeneous growth of the TiN coating deposited by EPD [30]. However, EPD coatings are rougher than those obtained by PVD [23] or nitriding [10] and high roughness increase the exposed surface, which could be interesting in processes such as biomedical and catalysis applications but would have adverse consequences in its protective character.…”

Section: Mendoza Et Alsupporting

confidence: 66%

“…Few corrosion studies of TiN coatings covering Ti and Ti-alloys have been described in the literature [8,10], pointing up the lack of improvement assessment of the corrosion resistance refereed to the Ti substrate. Up to our knowledge, only the corrosion study of TiN coatings deposited by PVD on a 304 AISI stainless steel provides a more effective corrosion protection in NaCl solutions [23].…”

Section: Journal Of the European Ceramic Society XXX (Xxxx) Xxx-xxxmentioning

confidence: 99%

“…In 2013, Pohrelyak et al [10] reported the relationship of the sample roughness with the corrosion resistance in a Ringer solution for the modified surface of a Ti alloy by nitriding. In recent published works, corrosion results in different test solutions (HCl or NaCl) shows that the resistance of nitrides (TiN, TiAlN, CrN, CrAlN) depends on the coating composition and the number of layers, increasing the resistance efficiency in NaCl up to the 86.11% for CVD coatings in stainless steel [8,23].…”

Section: Introductionmentioning

confidence: 99%

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Protective nature of nano-TiN coatings shaped by EPD on Ti substrates

Mendoza

González

Gordo

et al. 2018

Journal of the European Ceramic Society

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A B S T R A C TThe hardness and corrosion resistance of TiN coatings, processed by Electrophoretic Deposition (EPD) to cover polished and unpolished Ti substrates, have been evaluated. A deposition time of 5 min has been enough to obtain a cohesive layer of 7-8 μm in thickness. The coatings were thermally treated in vacuum atmosphere at 1200°C for 1 h with heating and cooling rates of 5°C min The nanohardness values of the polished samples have been increased from 2.8-4.8 GPa up to 6.5-8.5 GPa. Besides, the corrosion current density has been reduced more than one order of magnitude obtaining a protective efficiency of 82%. These values have been compared with other works in literature where authors used complex and costly processing techniques, demonstrating the strong impact of the colloidal processing over the specific properties of the material.

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Section: Mendoza Et Alsupporting

confidence: 66%

Section: Journal Of the European Ceramic Society XXX (Xxxx) Xxx-xxxmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Protective nature of nano-TiN coatings shaped by EPD on Ti substrates

Mendoza

González

Gordo

et al. 2018

Journal of the European Ceramic Society

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“…The AEGD process is effective in removing the surface layer to a depth of 200–400 nm. The deposition procedure has been detailed elsewhere and the specific parameters used in this study are presented in Table .…”

Section: Methodsmentioning

confidence: 99%

“…In addition to these elements, double layer capacitance of the coatings CPE f , pore resistance R f which accounts for the coating resistance to porosity due to the ionic pathways through the coating and Warburg W elements were added to the equivalent circuit used to fit the EIS spectra of the coatings (Figure 9b). These elements are typical in fitting the EIS data of hard coatings [16,38] while the incorporation of W has been reported to improve the fitting accuracy. [39] The CPE is used due to the inhomogeneous microscopic nature of the surface consisting of localized pores and charge heterogeneously distributed, two-and three-phase regions, adsorbed species and variation in compositions [40] and it is defined by…”

Section: Corrosion Properties Measurementsmentioning

confidence: 99%

Electrochemical evaluation of the corrosion protectiveness and porosity of vacuum annealed CrAlN and TiAlN cathodic arc physical vapor deposited coatings

Adesina

Gasem

Kumar

2019

Materials & Corrosion

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The corrosion behavior of cathodic arc physical vapor deposited CrAlN and TiAlN coatings were examined in 1 M HCl solution before and after vacuum annealing at 700, 800, 900, and 1000 °C. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) methods were used to study the corrosion behavior and porosity of the coatings in comparison with the bare steel substrate (304SS). Structural and mechanical characterization of the coatings were also conducted. It is found that with increasing annealing temperature, the mechanical properties of TiAlN increased due to age hardening caused by spinodal decomposition while the hardness of CrAlN decreased as result of relaxation. Similarly, EIS and PDP results revealed that the as‐deposited and annealed coatings offer higher corrosion resistance as compared to the bare 304SS substrate. The coatings susceptibility to corrosion is reduced after annealing as indicated by the increasing nobility of Ecorr. Both PDP and EIS tests revealed that CrAlN coating annealed at 1000°C exhibited superior corrosion resistance properties. It is found that the reduced current density for CrAlN coating annealed at 1000°C was due to the reduction in the porosity. Annealed TiAlN coating follows similar behavior until an optimum annealing temperature of 800°C. Beyond this temperature, porosity enlargement and an increase in the number of pores subsequent to structural changes deteriorated the corrosion resistance of TiAlN coating.

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Electrochemical and electrical resistance behavior of cathodic arc PVD TiN, CrN, AlCrN, and AlTiN coatings in simulated proton exchange membrane fuel cell environment

Khan

Adesina

Gasem

2018

Materials & Corrosion

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Proton exchange membrane fuel cells (PEMFC) attracted significant attention to meet energy demands for future applications. Graphite bipolar plates are currently being used due to its high corrosion resistance and electrical conductivity, but for economic reasons, metallic bipolar plates are being considered as a cost‐effective alternative. However, corrosion poses a serious challenge with the use of metallic bipolar plates. This study deals with the evaluation of the corrosion properties of TiN, CrN, AlTiN, and AlCrN coatings in PEMFC application. Electrochemical tests under anodic and cathodic conditions and interfacial contact resistance (ICR) test were used to investigate the electrochemical and electrical resistance properties. Results revealed that these coatings exhibit higher corrosion resistance as compared to 304 stainless steel in PEMFC environment. CrN and TiN coatings provided lower corrosion current density, higher durability, and lower ICR as compared to the ternary coatings. Corroded surface morphology revealed laths typed structure in the passive film of CrN and particle typed structure in that of TiN coating. However, AlCrN coating was found more durable than AlTiN coating under PEMFC environment. The incorporation of Al in TiN and CrN to form AlTiN and AlCrN coatings, respectively, affects the performance of the ternary coating in PEMFC environment despite the favorable influence it has on other properties of the coatings.

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Corrosion Resistance Behavior of Single-Layer Cathodic Arc PVD Nitride-Base Coatings in 1M HCl and 3.5 pct NaCl Solutions

Cited by 53 publications

References 21 publications

Protective nature of nano-TiN coatings shaped by EPD on Ti substrates

Protective nature of nano-TiN coatings shaped by EPD on Ti substrates

Electrochemical evaluation of the corrosion protectiveness and porosity of vacuum annealed CrAlN and TiAlN cathodic arc physical vapor deposited coatings

Electrochemical and electrical resistance behavior of cathodic arc PVD TiN, CrN, AlCrN, and AlTiN coatings in simulated proton exchange membrane fuel cell environment

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