Electrocodeposition and Characterization of Ni-WC Composite Coating From Non − Aqueous Bath

Abstract

Abstract:Composite coating of tungsten carbide (WC) in the matrix of nickel has been achieved by direct current (DC) electrodeposition technique using a non aqueous bath. The deposition parameters such as current density, bath temperature, and stirring rate were maintained at constant levels for all the coating configurations. The composition of the coating and its microstructure were studied using energy dispersive x-ray spectroscopy, uv-vis spectrophotometry and x-ray diffraction, respectively. Surface morphology of the coatings was studied by scanning electron microscopy (SEM and TEM). Effect of heat treatment on the deposits microstructures and microhardness was also investigated. The Ni-WC composites, prepared at optimum conditions, exhibited improved mechanical properties in comparison to pure nickel electrodeposits.

Structure and properties of electrodeposited functional Ni–Fe/TiN nanocomposite coatings

“…Agitation rate was fixed to 700 ± 20 rpm. A detailed description of electrochemical cell assembly and electrodeposition process is described elsewhere [22][23][24].…”

Pengaruh Variasi Temperatur Terhadap Morfologi Berbagai Lapisan Komposit : Sebuah Kajian

“…Nikel ialah salah satu material yang digunakan sebagai matriks lapisan komposit [11]. Kemudian data juga menunjukkan bahwa proses pelapisan nikel ditunjukan untuk keperluan utama sebagai perlindungan korosi sebesar 30% dan perlindungan aus sebesar 25% [12].…”

Electrochemical Synthesis of Nanocomposites

“…For nickel matrix electrodeposits, a great variety of particles have been used such as oxides i.e. TiO 2 [41,42], Al 2 O 3 [43], CeO 2 [44,45], ZrO 2 [46], graphene oxide GO [47], carbon nanotubes CNT; Al 2 O 3 /Y 2 O 3 /CNT [48], carbides like SiC [49][50][51], WC [52] and nitrides such as TiN [53] and Si 3 N 4 [54].…”