Parameter optimization for electroless Ni–W–P coating

Shu, Xiaoyan; Wang, Yuxin; Lu, Xin; Liu, Chuming; Gao, Wei

doi:10.1016/j.surfcoat.2015.06.068

Cited by 34 publications

(11 citation statements)

References 46 publications

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“…From electrochemical impedance spectroscopy study in 3.5% NaCl solution, the best corrosion resistance is seen for a coating bath composition having 30 g/L nickel sulphate, 17 g/L sodium hypophosphite, 25 g/L sodium tungstate and an annealing temperature of 600 °C [42]. Optimum deposition of tungsten and phosphorus content of the coatings using orthogonal arrays by considering plating bath parameters such as concentration of sodium hypophosphite, sodium citrate, bath temperature, pH and stabilizer has been reported by Shu et al [43]. From an extensive review of literature, it seems that the research concerning electroless Ni-P-W coating is mainly directed towards the investigation of surface morphology, microstructure, corrosion resistance, microhardness, wear resistance and friction behavior.…”

Section: Introductionmentioning

confidence: 78%

“…From an extensive review of literature, it seems that the research concerning electroless Ni-P-W coating is mainly directed towards the investigation of surface morphology, microstructure, corrosion resistance, microhardness, wear resistance and friction behavior. The effect of different heat and surface treatments on the same has also been studied, while the tribological behavior has been investigated mostly under dry sliding condition [31][32][33][34][35][36][37][38][39][40][41][42][43]. Investigation of tribological behavior of EN coatings under lubricated condition is seen to be mostly concentrated around Ni-P binary alloy coatings and its composite variants [13,[14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Wear Behavior of Electroless Ni-P-W Coating under Dry and Lubricated Conditions Using RSM and Fuzzy Logic

Mukhopadhyay¹,

Duari²,

Barman³

et al. 2016

Port. Electrochim. Acta

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The present work aims to investigate and correlate the wear behavior of electroless NiP -W coating under dry and lubricated conditions with the tribological testing parameters. A pin-on-disc configuration test setup is used for the same. Taguchi's orthogonal design of experiments technique is used to carry out the experiments. Both response surface and fuzzy rule based models are seen to be effective in determining the complex interrelationship between the wear depth of the coatings and the test parameters, namely applied normal load, sliding speed and sliding duration. The coefficient of determination for fuzzy logic based predictions is seen to be higher than the regression predicted ones, indicating better modeling capabilities of the artificial intelligence technique. ANOVA results reveal that the wear depth is mostly influenced by sliding speed followed by applied normal load and sliding duration for both dry and lubricated conditions. Coating composition, phase transformation and microstructure studies are undertaken to analyze their effects on the wear behavior. Abrasive wear mechanism is seen to be the predominating under both dry and lubricated condition. The coatings are seen to suffer more wear under dry sliding condition compared to lubricated environment.

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Section: Introductionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Investigation of Wear Behavior of Electroless Ni-P-W Coating under Dry and Lubricated Conditions Using RSM and Fuzzy Logic

Mukhopadhyay¹,

Duari²,

Barman³

et al. 2016

Port. Electrochim. Acta

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show abstract

“…As well, alkaline coatings can not be used for some metals, especially some aluminum alloys. [10][11][12][13][14] Of the important parameters on the electroplating rate and the properties of Ni-P electroless coatings is the pH of the solution. Depending on the chemical composition, the electroless acidic baths work in a specific pH range.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Electroless Bath Parameters and Heat Treatment on the Properties of Ni-P and Ni-P-Cu Composite Coatings

et al. 2018

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NiP -(Cu) composite coatings were applied on a St37 steel in an acidic bath of hypophosphite composite. The effect of the concentration of the Cu particles and pH of the solutionon the amount of Ni and P of the coatings, their morphology, and hardness of the coatings were explored. Some of the coated samples were also heat treated at 400ºC for 1 hour. The phases formed, the microstructure and the amount of the alloying elements of the coatings were analyzed by X-Ray powder diffraction (XRD), Scanning Electron Microscope (SEM) equiped with Energy Dispersive Spectroscopy (EDS). Results show that although adding Cu particles reduced the hardness of NiP coating (from 482.4 to 351.2 VH in 1 gr/lit Cu), within NiP -Cu composite coatings the hardness of NiP -Cu composite coating increased from 351.2 to 380.7 VH by increasing the Cu particles from 1 to 7 gr/lit. The structure of the coating was crystalline during the heat treatment making the coating harder. With increasing the pH of the solution from 4.5 to 7 and then to 9, the weight percent of P and the particle of Cu were reduced.

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“…The study for protecting alloys from corrosion in seawater is of great significance. As yet, the methods of protective coating [10], surface oxidization [11,12], mechanical alloying [13][14][15] aged-hardening heat treatment [4,8] and the accretion of corrosion inhibitors [16,17] have been applied to improve anticorrosion behavior of Al-Mg alloys. Besides, Rasouli et al have applied the friction stir processing to render AA5083 Al-Mg alloy an improved anticorrosion behavior [18].…”

Section: Introductionmentioning

confidence: 99%

Preparation of multifunctional Al-Mg alloy surface with hierarchical micro/nanostructures by selective chemical etching processes

Tian

Kong

Wang

et al. 2016

Applied Surface Science

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A superamphiphobic aluminium magnesium alloy surface with enhanced anticorrosion behavior has been prepared in this work via a simple and low-cost method. By successively polishing, etching and boiling treatments, the multifunctional hierarchical binary structures composed of the labyrinth-like concave-convex microstructures and twisty nanoflakes have been prepared. Results indicate that a superhydrophobic contact angle of 160.5° and superoleophobic contact angle larger than 150° as well as low adhesive property to liquids are achieved after such structures being modified with fluoroalkyl-silane. Furthermore, the anticorrosion behaviors in seawater of the as-prepared samples are characterized by electrochemical tests including the electrochemical impedance spectroscopy, equivalent circuits fitting and potentiodynamic polarization curve. It is found that the hierarchical micro/nanostructures accompanying with the modified coating are proved to possess the maximal coating coverage rate of 90.0% larger than microstructures of 85.9%, nanostructures of 83.8% and bare polished surface of 67.1% suggesting the optimal anticorrosion. Finally, a great potential application in concentrators for surface-enhanced Raman scattering (SERS) analysis of toxic and pollutive ions on the superamphiphobic surface is also confirmed. This work has wider significance in extending further applications of alloys in engineering and environmental detecting fields.

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Parameter optimization for electroless Ni–W–P coating

Cited by 34 publications

References 46 publications

Investigation of Wear Behavior of Electroless Ni-P-W Coating under Dry and Lubricated Conditions Using RSM and Fuzzy Logic

Investigation of Wear Behavior of Electroless Ni-P-W Coating under Dry and Lubricated Conditions Using RSM and Fuzzy Logic

The Effect of Electroless Bath Parameters and Heat Treatment on the Properties of Ni-P and Ni-P-Cu Composite Coatings

Preparation of multifunctional Al-Mg alloy surface with hierarchical micro/nanostructures by selective chemical etching processes

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