Ni-W electrodeposited coatings: Characterization, properties and applications

Allahyarzadeh, M.H.; Mahmood, Asif; Rezvanian, A.R.; Torabinejad, V.; Rouhaghdam, A.R. Sabour

doi:10.1016/j.surfcoat.2016.09.052

Cited by 225 publications

(91 citation statements)

References 216 publications

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“…The field of application of Ni-W electrodeposited coatings is vast [9]. For example, the proper corrosion resistance of these alloys has made possible their application as hard coatings [10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…Using water-based electrolytes for Ni-W electroplating, one can observe significant hydrogen release, resulting in the distortion of coating structure due to its hydrogen saturation, which provokes the stress cracking of coatings. These microcracks significantly influence the operating characteristics of coatings, particularly their corrosion resistance [9]. To avoid crack development, different methods are used like introduction of special additives to electrolytes, application of the pulse current mode, employing a third co-precipitating metal, and deposition under supergravitation conditions [24].…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical Deposition of Ni–W Crack-Free Coatings

et al. 2018

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The main features of electrochemical deposition of coatings based on Ni-W binary alloy in the pulse current mode using pyrophosphate electrolytes were studied. Two electrolytes with a pH of 8.7 and 9.5 were used. The deposition was carried out with the current density varying in the range of 0.01-0.1 A•cm −2 , and the duty cycle (the relative pulse duration) was changed within the range 20-100%. The surface morphology and elemental and phase composition of the coatings were studied by scanning electron microscopy, energy-dispersive X-ray microanalysis and X-ray diffractometry. The experimental conditions allowing us to achieve the maximum Faradaic efficiency and W content in the coatings were determined. It was found that the pulse current mode enabled the fabrication of crack-free coatings with a thickness greater than 6 µm.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrochemical Deposition of Ni–W Crack-Free Coatings

et al. 2018

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“…Composite electrochemical coatings (CECs) are generating significant interest, both in research and in practical applications, particularly in transportation, electrotechnical, food, and textile industries [1][2][3]. CECs provide a unique technological edge to enhance the mechanical and tribological properties of the surface.…”

Section: Introductionmentioning

confidence: 99%

Surface Energy and Tribology of Electrodeposited Ni and Ni–Graphene Coatings on Steel

et al. 2019

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Composite electrochemical coatings (CECs) are some of the most widely investigated coatings due to its versatility in tailoring physio-mechanical and tribological properties. The effectiveness of the CECs for tribological applications is dependent on the solid–liquid interfaces. The active and passive nature of the contact boundaries for a CEC with a solid/liquid interface is defined by the surface energy of these boundaries. Unless the effect of surface energy on the tribological properties of the CEC are understood, it is not possible to get a holistic picture on properties, such as corrosion and tribocorrosion. The present study investigates the surface energy of optimized nickel (Ni) and Ni–graphene (Ni–Gr) coatings and their effect on the dynamic friction and wear behavior. It was found that the addition of Gr to the Ni coating in small quantities could decrease the polar component of surface energy significantly than the dispersive component. The presence of Gr in the coating was able to reduce the wear while providing low friction. The Ni–Gr coating exhibited low surface energy that includes weak adhesive forces, which can prevent embedding of the wear particles during sliding.

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“…It was shown that nickel/iron alloys have good mechanical, electrical, and magnetic properties and a high catalytic activity for some electrochemical reactions [8][9][10]. Enrichment of these alloys with small quantities of tungsten improves their thermal stability as well as their wear resistance, corrosion resistance, microhardness, and prevents thermal oxidation [11][12][13][14][15][16][17][18][19][20]. NiFeW alloys may exhibit the crucial properties of NiW and FeW alloys without the unwanted properties of the two-component alloys.…”

Section: Introductionmentioning

confidence: 99%

“…The metallurgical fabrication of these nanostructured alloys is expensive due to tungsten's high melting point. Therefore, other procedures for their production have been recommended, such as mechanical alloying, sputtering, or electrolytic deposition from water baths [11][12][13][14][15][16][17][18][28][29][30]. Well-sized nanocrystals are supposed to be obtained by adding a small portion of Cu to the initial alloy composition [31].…”

Section: Introductionmentioning

confidence: 99%

Influence of mechanical activation and heat treatment on magnetic properties of nanostructured mixture Ni85.8Fe10.6Cu2.2W1.4

Vasić

Kalezić-Glišović

Milinčić

et al. 2019

J min metall B Metall

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The mechanical activation of the Ni 85.8 Fe 10.6 Cu 2.2 W 1.4 powder mixture in the time intervals of 30-210 min in combination with thermal treatment at 393-873 K resulted in microstructural changes, forming the nanostructured mixture of the same composition but improved magnetic properties. The best result were achieved for mechanical activation during 120 min and thermal treatment at temperatures close to the Curie temperature (693K), enhancing the mass magnetization of the starting powder mixture by about 57%. The microstructural changes, which include the structural relaxation, decrease in free volume, density of dislocation and microstrain, improve structural characteristics of material, enabling better mobility of walls of magnetic domains and their better orientation in applied magnetic field and consequently enabling better mass magnetization of the material. With longer time of milling, the growing stress introduced in the sample undergoes easier relief, relocating stress-relieving processes toward lower temperatures.

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Ni-W electrodeposited coatings: Characterization, properties and applications

Cited by 225 publications

References 216 publications

Electrochemical Deposition of Ni–W Crack-Free Coatings

Electrochemical Deposition of Ni–W Crack-Free Coatings

Surface Energy and Tribology of Electrodeposited Ni and Ni–Graphene Coatings on Steel

Influence of mechanical activation and heat treatment on magnetic properties of nanostructured mixture Ni85.8Fe10.6Cu2.2W1.4

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