Corrosion behaviour of compositionally modulated nanocrystalline Ni–W coatings

Wasekar, Nitin P.; Gowthami, S.; Jyothirmayi, A.; Joardar, J.; Sundararajan, G.

doi:10.1080/02670844.2019.1660035

Cited by 14 publications

(5 citation statements)

References 37 publications

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“…Corrosion resistance properties results are given in Tables 5 and 6, and it can be observed that the incorporation of epoxy resin and acrylic grafting polymers helped to develop a coating with improved salt spray resistance and humidity. The corrosion resistance properties of the developed coating were optimised with the increase of epoxy content in the coatings [15,[24][25][26][27][28].…”

Section: Corrosion Resistance Properties Of Acrylic Cathodic Electrod...mentioning

confidence: 99%

Acrylic-based monocoat eco-friendly, anticorrosive coating for cathodic electrodeposition

Prajapati

Kamani

2022

Surface Engineering

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In the present study, a grafted acrylic-epoxy polymer coating has been developed for cathodic electrodeposition. This is a mono-coat system where different colours (red, blue, black, grey, etc.) are developed in electrodeposition coatings. In this research, the mono-coat technology provides the dual coat (primer and overcoat). The mono-coat electrodeposition system has several advantages compared to conventional electrodeposition such as excellent durability, better UV resistance (500 h), lower cost in paint application and better metal protection against corrosion (500 h salt spray test as per ASTM B 117). The discussion would highlight the formulation concept and mechanism of electrodeposition coatings. The polymers of the grafted acrylic-epoxy system have been developed by varying the grafted acrylic/epoxy ratio. The grafted acrylic/epoxy composition of 80:20 has been found to have optimum anticorrosive and UV resistance properties.

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Section: Corrosion Resistance Properties Of Acrylic Cathodic Electrod...mentioning

confidence: 99%

Acrylic-based monocoat eco-friendly, anticorrosive coating for cathodic electrodeposition

Prajapati

Kamani

2022

Surface Engineering

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“…Excessive internal stress can cause bending of the substrate or cracking of the coating, or even falling off, thus affecting the corrosion resistance and mechanical properties of the coating [15]. The internal stress of the coating is divided into compressive stress and tensile stress [16][17][18]. The coating generates compressive stress during the electrodeposition reaction due to the difference between the thermal expansion coefficients of the substrate and the coating [19,20].…”

Section: Introductionmentioning

confidence: 99%

Internal stress of high tungsten content Ni-W alloy coatings

Xu,

Wang,

Sheng

et al. 2023

Surface Engineering

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This study investigates the impact of current density on the microstructure, composition, and internal stress of Ni-W alloys electrodeposited in a citrate system. Using XRD, SEM, EDS, TEM, and XPS, it was found that tungsten serves as a solute in a Ni-W FCC structure oriented in the (111) direction. Increasing current density led to higher tungsten content and current efficiency. The addition of 2-Butyne-1,4-diol altered the carbon content, significantly reducing internal stress by promoting carbide formation near grain boundaries, which prevented coating shrinkage during hydrogen escape. This carbon enrichment improved the alloy's corrosion resistance.

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“…The work of Eskin [6] showed that the corrosion resistance of Co-W plating coating is comparable or even better than conventional Cr plating but the wear resistance is lower. Wasekar [7] proposed that the compositionally modulated Ni-W alloy coatings also depicts substantial improvement in corrosion resistance over hard chrome coating. However, its hardness and wear resistance is unsatisfactory.…”

Section: Introductionmentioning

confidence: 99%

Enhanced performance of electrodeposited Ni-SiC plating as an alternative to electroplated chromium deposits: the effect of pulse duty cycle

Wang¹,

Huang²,

Liu³

et al. 2022

Surf. Topogr.: Metrol. Prop.

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Ni-SiC composite coating was prepared by electrodeposition under the pulse current as an alternative for the environment polluted and human cancerogenic hard chromium plating. The microstructure and tribological performance of the composite coating under different duty cycle were studied. The results showed that the mechanical performance of the Ni-SiC can be optimized by adjusting the pulse duty cycle. With the increase of the duty cycle, the grains were refined and the friction coefficient of the coating decreased. Composite coating obtained under 80 % duty cycle processed the lowest wear volume during the friction and wear test. The effect of duty cycle on the microstructure and tribological performance of the composite coating was discussed. Moreover, the co-deposition mechanism of Ni atoms and the SiC particles under the pulse current were discussed.

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Corrosion behaviour of compositionally modulated nanocrystalline Ni–W coatings

Cited by 14 publications

References 37 publications

Acrylic-based monocoat eco-friendly, anticorrosive coating for cathodic electrodeposition

Acrylic-based monocoat eco-friendly, anticorrosive coating for cathodic electrodeposition

Internal stress of high tungsten content Ni-W alloy coatings

Enhanced performance of electrodeposited Ni-SiC plating as an alternative to electroplated chromium deposits: the effect of pulse duty cycle

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