Abrasion and erosion wear of electrodeposited nickel - silicon carbide nanocomposite coatings

2017 ◽  
Vol 48 (8) ◽  
pp. 785-791 ◽  
Author(s):  
V. Alar ◽  
I. Žmak ◽  
I. Stojanović ◽  
V. Šimunović ◽  
Z. Čeralinac
Keyword(s):  
Silicon Carbide ◽  
Nanocomposite Coatings ◽  
Erosion Wear ◽  
Electrodeposited Nickel ◽  
Nickel Silicon

scholarly journals Influence of Surfactants on the Characteristics of Nickel Matrix Nanocomposite Coatings

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Abbas Fahami ◽  
Bahman Nasiri-Tabrizi ◽  
Mohsen Rostami ◽  
Reza Ebrahimi-Kahrizsangi
Keyword(s):  
Silicon Carbide ◽  
Average Particle Size ◽  
Nanocomposite Coatings ◽  
Average Particle ◽  
Nickel Matrix ◽  
Weight Percentage ◽  
Carbon Particles ◽  
Nickel Silicon ◽  
Electrochemical Plating ◽  
Matrix Nanocomposite

Nickel-based nanocomposite coatings were prepared from a Watts-type electrolyte containing reinforcement’s particles (silicon carbide and graphite) to deposit onto the steel St-37 substrate. The electrochemical plating of the coatings in absence and presence of surfactants and reinforcements particles was carried out to optimize high quality coatings with appropriate mechanical and morphological features. The surfactants such as cetyltrimethylammonium bromide (CTAB), sodyumdodecyl sulfate (SDS), and saccharine affected electrodeposition plating and subsequently changed mechanical characteristics. Based on XRD results, the dominant phases in the absence of surfactants were nickel oxide (NiO), nickel, and silicon carbide (SiC), while the main phases in presence of surfactants were nickel (Ni) and SiC. The hardness of the resultant coatings was found to be from 332 to 593 (Hv) depending on the bath parameter and the reinforcements weight percentage (wt%) in the Ni matrix. Microscopic observations illustrated a cluster-like structure which consisted of some fine sphere particulates with average particle size of 65–150 nm. According to elemental mapping spectra, a homogenous distribution of nickel, silicon, and carbon particles appeared into the nickel matrix coating. Finally, the experimental outcomes demonstrated that the surfactants have significant influence on the composition of coatings, surface morphology, and mechanical properties.

Mechanical properties of nickel silicon carbide nanocomposites

2002 ◽  
Vol 328 (1-2) ◽  
pp. 137-146 ◽  
Author(s):  
A.F. Zimmerman ◽  
G. Palumbo ◽  
K.T. Aust ◽  
U. Erb
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Nickel Silicon

scholarly journals EFFECT OF STIRRING RATE ON ELECTROCHEMICAL CODEPOSITION OF Ni-SiC COMPOSITE

2015 ◽  
Vol 12 (12) ◽  
pp. 30-33
Author(s):  
Kailash Hamal ◽  
Armila Rajbhandari ◽  
Gobinda Gyawali ◽  
Soo Wohn Lee
Keyword(s):  
Silicon Carbide ◽  
Surface Morphology ◽  
Cationic Surfactant ◽  
Coefficient Of Friction ◽  
Crystalline Phase ◽  
Crystal Orientation ◽  
Xrd Analysis ◽  
Stirring Rate ◽  
Nickel Silicon ◽  
Sulfamate Bath

Nickel-Silicon Carbide (Ni-SiC) composite has been prepared by electrochemical codeposition technique. Nickel sulfamate bath was used along with grain modifier saccharine and cationic surfactant cetyltrimetylammonium bromide (CTAB). The effect of stirring rate was systematically studied and optimized to get well dispersed SiC particles in appropriate amount. Mixed crystalline phase with reinforced [2 1 1] crystal orientation was obtained by XRD analysis. The result revealed that, 250 revolutions per minute (rpm) is optimum stirring rate for the electrochemical codeposition of Ni–SiC. Coating prepared at 250 rpm showed highest microhardness and lowest coefficient of friction with better surface morphology and well distributed nano SiC particles.Scientific World, Vol. 12, No. 12, September 2014, page 30-33       

Composite Films of Nickel / Silicon Carbide

1997 ◽  
Vol 495 ◽  
Author(s):  
Maria Hepel
Keyword(s):  
Silicon Carbide ◽  
Corrosion Resistance ◽  
Vickers Microhardness ◽  
Composite Films ◽  
Deposition Potential ◽  
Nucleation And Growth ◽  
Steel Substrates ◽  
Nickel Silicon ◽  
Electrodeposition Of Nickel ◽  
Sic Films

ABSTRACTThe electrodeposition of nickel/silicon carbide (Ni/SiC) composite films formed from modified Watt's bath solutions under potentiostatic conditions on steel substrates was investigated. The effects of deposition potential, pH, variable concentration of SiC in suspension, and additives, such as coumarin and EDTA, on the nickel nucleation and growth transients, as well as on the composition and morphology of Ni/SiC films are described. Improved Vickers microhardness and corrosion resistance of these composite films were found in comparison to those of particle-free deposits.

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