Electrodeposition of high Mo content amorphous/nanocrystalline Ni–Mo alloys using 1-ethyl-3-methyl-imidazolium chloride ionic liquid as an additive

Functionally graded nickel–tungsten coating: electrodeposition, corrosion and wear behaviour

“…These cracks were seen in nickel-tungsten coating 20,29 and also nickel-molybdenum. [30][31][32] Various morphologies represent the different conditions governing in each of the last layer of coating. 25,33 The illustrated morphology in Fig.…”

Wear properties of Ni–Mo coatings produced by pulse electroforming

“…The compositions and experimental operating conditions are listed in Table 1. The plating temperature of 30°C and pH value of 9.5 can produce a higher molybdenum content of the coating [6]. Next, 0.14 M ammonia was added to adjust the pH value of the plating bath to 9.5.…”

“…The Ni-13Mo coating is a potential substitute for chromium coatings in industrial applications when operating at temperatures higher than 100°C and when good microhardness properties are required. Because the electrodeposition of Ni-Mo alloy yields better mechanical, anticorrosive and thermal stability characteristics, coupled with its nanocrystalline/amorphous microstructure to further enhance the mechanical properties (such as the tensile strength and degree of hardness) [3,[6][7][8], this alloy has the opportunity to replace hexavalent chromium plating.…”

A novel viewpoint of an imidazole derivative ionic liquid as an additive for cobalt and nickel electrodeposition

“…20 Smoother and ner surfaces were obtained with sulfate baths than with other baths. 21 Electrodeposited Ni and Co in the presence of some organic and inorganic additives exhibit granular, nonuniform features 22,23 with extensive microcracking on the surface, 1,12,24,25 low hardness and yield strength, 26 lack of brightness, low corrosion resistance, 27 poor cathodic current efficiency, 1,28,29 insufficient thermal stability and poor throwing power. 4,12 Some additives, such as sodium citrate and glycine, that have been used as additives in the electrodeposition of Co and Ni required high temperatures and high current densities to obtain crackfree deposits.…”

“…34,[45][46][47][48][49][50] However, a few studies have used ionic liquids as additives in electrodeposition processes. 28,41,48 Therefore, in the current work, the effect of a novel ionic liquid, namely, 1-methyl-3-(2-oxo-2-((2,4,5 triuorophenyl)amino)ethyle)-1H-imidazol-3-ium iodide (Im-IL), on the coating and electrodeposition qualities of Co and Ni from sulfate and Watts baths were studied. Scanning electron microscopy (SEM), combined with energy dispersive X-ray spectroscopy (EDX), Xray diffraction (XRD) and atomic force microscopy (AFM) were used to analyze the structures, morphologies and compositions of the coatings.…”