Corrosion and Wear Study of Ni–W–B/WC Composite Coatings Electroplated by Pulse Plating

Abstract

Herein, the effect of WC content (ranging from 0 to 12 g L−1 in the bath) is studied on the corrosion and wear properties of the Ni–W–B/WC pulse‐plated composite coatings. Results display that at the first step, increasing WC concentrations in the bath (up to 4 g L−1) increases WC content in the coating. However, further addition of WC particles decreases WC content in the coating because of the agglomeration of nanoparticles. Furthermore, the corrosion and wear resistance of the deposits improve considerably with raising the WC amount in the deposits. In other words, the coating electroplated at 4 g L−1 of nanoparticles in the bath displays the best electrochemical and wear behaviors. The uniform distribution of reinforced particles in the deposit is the main reason for achieving superior properties. A maximum corrosion resistance of about 65.8 kΩ cm2 is attained in the coating with 4 g L−1 WC in the bath. In addition, this coating displayed minimum values of wear weight loss (0.288 mg cm−2) and the friction coefficient (0.348). Higher WC contents in the bath negatively affect the properties of the coatings because of the existence of agglomerated particles and decreasing nanoparticle amounts in the coatings.

Enhancement of the Wear Resistance and Corrosion Resistance of Electroplated Ni–W–B Coatings Using PDA-Functionalized VC

“…In recent years, it has been proven that the addition of nanomaterials to alloy coatings can optimize the structure of the coating and effectively improve the performance of the coating through dispersed phase strengthening and grain refinement. Ahmadiyeha et al 8 explored the effect of SiC concentration on the composition of coatings and found that SiC can significantly enhance the anticorrosion effect of coatings. Shakoor et al 12 reinforced a Ni−B matrix with Al 2 O 3 particles and found that this material can enhance the wear resistance and corrosion resistance of the coating.…”

“…In recent years, it has been proven that the addition of nanomaterials to alloy coatings can optimize the structure of the coating and effectively improve the performance of the coating through dispersed phase strengthening and grain refinement. Ahmadiyeha et al studied the effect of WC content on the corrosion wear properties of Ni–W–B coatings. The results show that the anticorrosion resistance and wear ability of the Ni–W–B coating are significantly improved by the addition of WC nanoparticles.…”

Effect of pulse electroplating parameters on the morphology and corrosion resistance of Ag plating coating

“…This experiment is based on the study of the effect of average current density, pulse on-time and pulse off-time on the surface morphology and corrosion resistance, aiming to control the plating process more precisely and obtain a better coating. Therefore, through electrochemical corrosion tests and a series of characterization means, to study the influence mechanism of pulse plating process conditions on the appearance and corrosion resistance of pure silver coatings is very necessary [30][31][32][33][34]. The effect of unidirectional pulse process parameters on the external appearance and corrosion resistance of the plated layer was investigated by orthogonal experiments and unifactorial method.…”

Effect of Different Contents of WC on Microstructure and Properties of NiCrMo Coatings Prepared by PTA

“…Ahmadiyeh et al chose different concentrations of tungsten carbide nanoparticles to deposit Ni-W-B/WC coatings in electrolyte, and studied the effect of WC content on the coating properties. The study found that WC can help to improve its seawater corrosion resistance within a certain range [11]. Wang et al prepared a Hastelloy C22 coating on the surface of Q235 by laser cladding technology, and found that the C22 coating can significantly improve the hardness and corrosion resistance of the steel substrate, but there were a few defects in the coating.…”