Characterization of Thin Electroless Nickel Coatings

Martyak, Nichölas M.

doi:10.1021/cm00046a019

Cited by 41 publications

(26 citation statements)

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“…For tailoring these properties, the phosphorous content can be manipulated via the deposition parameters of the used electrolyte [14]. NiP with a phosphorous content higher than 10.5 wt% is referred to as X-ray amorphous [15]. Therefore, NiP is machinable via diamond turning techniques to a roughness lower than 2 nm RMS [10].…”

Section: Electroless Nipmentioning

confidence: 99%

Dimensional stability of metal optics on nickel plated AlSi40

Kinast

Grabowski

Rohloff

et al. 2017

International Conference on Space Optics — ICSO 2014

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Section: Electroless Nipmentioning

confidence: 99%

Dimensional stability of metal optics on nickel plated AlSi40

Kinast

Grabowski

Rohloff

et al. 2017

International Conference on Space Optics — ICSO 2014

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“…Medium-phosphorus deposits usually have properties lying between the low-and high-phosphorus deposits, and the solution offers enhanced deposition rates. High-phosphorus deposits typically exhibit the best corrosion properties, but suffer from slow rates of deposition (Martyak et al 1993). Ni-P film finds extensive applications in different fields such as: (i) Aviation and Aerospace: Satellite and rocket components, rams pistons, valve components, (ii) Oil and Gas: Valve components, such as Balls, Gates, Plugs etc.…”

Section: Introductionmentioning

confidence: 99%

“…And other components such as pumps, pipe fittings, packers, barrels, (iii) Chemical Processing: Heat exchangers, Filter units, pump housing and impellers, mixing blades, (iv) Textile: Printing cylinders, machine parts, spinnerets, threaded guides, (v) Automotive: Shock absorbers, heat sinks, gears, cylinders, brake pistons, and (vi) Food and pharmaceutical: Capsule machinery dies, chocolates molds, food processing machinery components. Due to its unique properties of excellent corrosion resistance, combined with a high wear resistance (Martyak et al 1993).…”

Section: Introductionmentioning

confidence: 99%

Effect of pH values on nanostructured Ni–P films

Rahman

Jayaganthan

2014

Appl Nanosci

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Electroless Ni-P films were deposited on mild steel substrate and sodium dihydrogen phosphite was used as a reducing agent. Temperature and pH of the bath were maintained at 90°C and 6.86 to 10.86 respectively. The Ni-P film deposited samples were characterized by FE-SEM to know the surface and cross-section morphology of the film and the phases present were examined by X-ray diffraction. The chemical composition of the electroless Ni-P films was determined by EDS analysis. The thickness of the film was determined by FE-SEM cross-section image and was nearly 5 lm. The influence of pH values on film morphology was studied. Ni-P film was obtained in the pH ranges between 6.86 and 10.86 on mild steel substrate. Ni content in the film increased with increasing pH value of bath solution. Dense, uniform and small spherical shape grains were found in Ni-P film deposited at pH = 10.86. X-ray analysis shows a (222) preferential growth in all the films. The mean crystallite size of Ni-P films deposited at pH 6.86, 7.86, 8.86, 9.86, and 10.86, calculated by using the Scherrer-equation was found to be 44.7, 40.4, 41.2, 34.6 and 30.4 nm, respectively.

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“…The quality of obtaining electroless Ni-P deposit on the substrate depends on many factors such as temperature, pH of bath, bath loading, concentrations of nickel and the reducing agent, and the surface properties of the substrates [14][15][16]. Wetting agents, such as ionic and nonionic surfactants, are often added to increase the wettability of coated surfaces [17]. Despite the complicated behaviour of the deposition reactions, qualitative discussions on the effects of added nanoadditivesss such as Al 2 O 3 , SiO, and ZnO in the presence of surfactant (SLS) the surface roughness, surface morphology, microhardness, specific wear rate, and wear morphology are investigated and reported in this paper.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nanoadditives with Surfactant on the Surface Characteristics of Electroless Nickel Coating on Magnesium-Based Composites Reinforced with MWCNT

Dhinakaran

Elansezhian

Lalitha

2013

Advances in Tribology

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An experimental investigation has been carried out on optimizing process parameters of electroless nickel-phosphorous coatings on magnesium composite reinforced with carbon nanotube. A comprehensive experimental study of electroless Ni-P coatings on magnesium composite reinforced with multiwalled carbon nanotube under specific coating conditions was performed. The electroless coating bath consists of nickel sulphate (26 g/L), sodium hypo-phosphite (30 g/L) as reducing agent, sodium acetate (16 g/L) as stabilizer, and ammonium hydrogen difluoride (8 g/L) as the complexing agent. The surfactant SLS was added in the solution for better wetting and spreading of coating on substrate. The stabilizer thiourea (1 ppm) was added in the bath to prevent decomposition of bath. Different nanoadditives such as ZnO, Al 2 O 3 , SiO with various concentrations were used in the bath and their influence on coating process characteristics were studied The nano additives such as ZnO, Al 2 O 3 , SiO were added at concentrations of 0.1%, 0.5%, 1%, and 2% in the EN bath. The output parameters such as surface roughness, microhardness, specific wear rate, and surface morphology were measured. Surface morphology was studied using scanning electron microscope. The results showed that the proposed method resulted in significant improvement on the quality of the coatings produced.

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Characterization of Thin Electroless Nickel Coatings

Cited by 41 publications

References 0 publications

Dimensional stability of metal optics on nickel plated AlSi40

Dimensional stability of metal optics on nickel plated AlSi40

Effect of pH values on nanostructured Ni–P films

Effect of Nanoadditives with Surfactant on the Surface Characteristics of Electroless Nickel Coating on Magnesium-Based Composites Reinforced with MWCNT

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