Microstructure and corrosion resistance of Ni-Al2O3-SiC nanocomposite coatings produced by electrodeposition technique

Dehgahi, Shirin; Amini, Rasool; Alizadeh, Morteza

doi:10.1016/j.jallcom.2016.08.244

Cited by 93 publications

(33 citation statements)

References 32 publications

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“…Similar results were reported at different studies. [1,[33][34][35] In addition, as the concentration of nanoparticles increases in the bath, a longer period of time is required for the nanoparticles to be embedded into the matrix. In contrast, the capturing capacity of the growing metal matrix remains virtually constant, which causes a porous structure in the grain boundaries.…”

Section: Morphological Characteristicsmentioning

confidence: 99%

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

2020

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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.

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Section: Morphological Characteristicsmentioning

confidence: 99%

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

2020

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“…The corrosion potentials (E corr ) and corrosion current densities (I corr ) were obtained by extrapolating the rectilinear Tafel segments of the anode and cathode polarization curves, and passivation current densities (I pass ) were read from the passivation zones in the polarization curves. [89][90][91] All of the electrochemical testing results are listed in Table 3. As suggested in Table 3, the TO layer reveals a more positive E corr than that of the Ti6A14V alloy, and the I corr belonging to the TO layer was even slightly higher than that of the Ti6A14V alloy.…”

Section: 2 Electrochemical Behaviormentioning

confidence: 99%

“…47 The received TO layer, which had a certain thickness and consisted of R-phase TiO 2 , acted as a protective layer and protected the Ti6A14V alloy substrate from the Cl À attacking. [87][88][89][90][91] 3.3 Erosive-wear behaviours Fig. 15 displays the column charts of the mass losses of the Ti6A14V alloy and TO layer aer erosive-wear tests.…”

Section: 2 Electrochemical Behaviormentioning

confidence: 99%

Surface damage mitigation of Ti6Al4V alloy via thermal oxidation for oil and gas exploitation application: characterization of the microstructure and evaluation of the surface performance

et al. 2017

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“…In order to increase the mechanical strength, corrosion and wear resistance, the second phase nanoparticles reinforced metal matrix nanocomposites has been prepared and reported in the earlier are Cu-TiO 2 , Cu-CeO 2 , Cu-SiO 2 , Cu-ZrO 2 , Cu-Al 2 O 3 , Cu-Si 3 N 4 , Cu-CNTs etc. [3][4][5][6][7][8][9][10][11][12].These second phase nanoparticles reinforced metal matrix nanocomposites showed increased hardness and better corrosion and wear resistance compared to particle free metal electrodeposits [13][14][15][16][17][18][19][20][21][22]. The advantages of electrodeposition is an excellent low cost and low temperature technique compared to the conventional methods such as powder metallurgy, sputtering, spin coating, thermal spraying, centrifugal casting etc., which is used to coat over the complicated conductive surfaces.…”

Section: Introductionmentioning

confidence: 99%

Nano SiC Reinforced Copper Nanocomposite by a Simple Electrodeposition Method

Ramalingam¹

2019

IJEAT

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The Cu and Cu-SiCnanocomposite coatings were prepared by a simple electrodeposition technique from acidic copper sulphate electrolyte using SiC nanoparticles with an average particles size of 50 nm under optimized bath composition and preparation conditions for possible electrical contact material applications such as electrical switch and wiring boards where higher electrical conductivity and thermal conductivity is required. The scope of the present study is to enhance the strength, mechanical, corrosion and wear resistance properties of Cu-SiCnanocomposite compared to pure Cu coatings. The as prepared Cu and Cu-SiCnanocomposites were characterized for structural, mechanical and corrosion resistance properties by EDX, XRD, FESEM, Vickers microhardness tester and AC-impedance and Tafel polarization techniques. The elemental composition (wt% of Cu and SiC nanoparticles) of Cu-SiCnanocomposites was analyzed by EDX coupled with FESEM analysis confirms the presence of nanoSiC in the copper matrix and they were 89wt% of Cu and 11 wt% of SiC nanoparticles respectively. The surface morphology of Cu and Cu-SiCnanocomposites was studied by FESEM analysis shows that SiC nanoparticles were uniformly dispersed in the surface of the copper matrix compared to pure copper. The crystallite structure and grain size of the Cu and Cu-SiCnanocomposite electrodeposits was measured by XRD analysis. From the XRD results, the grain size calculated using Debye-Scherrer’s formula was ~35 nm for pure Cu and ~33 nm Cu-SiCnanocomposite. The crystallite structure of Cu and Cu-SiCnanocomposites was fcc (face centered cubic) and the preferred orientation of the plane was (220). The microhardness of Cu-SiCnanocomposite coating increased with increasing SiC nanoparticles concentration in the bath compared to pure Cu coating. The corrosion resistance measurements were performed for the pure Cu and Cu-SiCnanocomposite coatings by electrochemical impedance spectroscopy (EIS) and Tafel polarization techniques. It shows that, Cu-SiCnanocomposites has high corrosion resistance than pure Cu in 3.5wt% NaCl solution.

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Microstructure and corrosion resistance of Ni-Al2O3-SiC nanocomposite coatings produced by electrodeposition technique

Cited by 93 publications

References 32 publications

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

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

Surface damage mitigation of Ti6Al4V alloy via thermal oxidation for oil and gas exploitation application: characterization of the microstructure and evaluation of the surface performance

Nano SiC Reinforced Copper Nanocomposite by a Simple Electrodeposition Method

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