Meanwhile, Nd2O3 nanoparticles and ultrasound can significantly affect the microstructure and the oxidation resistance of Ni-Nd2O3 nanocomposite coatings. The existing problems and the suggestions for the further study of composite coatings were indicated.
The Ni-Nd2O3 nanocomposite coatings were prepared by electrodeposition with different modes of ultrasound action. The adhesion force between coating and substrate reaches a peak value of Electroless nickel has been used to prepare composite coatings with embedded nanoparticles.
Many researchers have investigated the influences of nanoparticles including WC, SiC, Al2O3 and diamond on the tribological properties of composite coatings. The Ni-Nd2O3 coating prepared by electrodeposition with dual-frequency ultrasound action has finer grains and denser structure and exhibits a superior oxidation resistance compared with the other coatings.
The nanocomposite coating has an excellent oxidation resistance with the increased content of Nd2O3 nanoparticles. The results show that the content of Nd2O3 nanoparticles greatly influences the oxidation resistance of nanocomposite coatings. An increase in current density leads to a decrease in grain size.
The results suggest that texture and microstructure play an important role in controlling corrosion rate of tin based coatings. At the same current density, the grain size of tin coatings increases with increased temperature. The corrosion resistance of tin coating with fibre is higher than that of tin coating with fibre texture.
Surfactants and agitation methods have marginal effects on the deposition behavior of electroless composite coatings. The corrosion resistance of tin coatings increases with a decrease in grain size.
The present article reviewed mainly the advancement of electroless Ni-P nanocomposite coatings in recent years. Shixue Wen, Jerzy A. The influence of current density and temperature on the macrotexture, the orientation and size of grains, and the corrosion resistance of tin deposits was studied.
The oxidation resistance of the coatings prepared by different electrodeposition methods was comparatively investigated. From application view, it is better to control the Ti-Al target current density at 9. During deposition, the effect of target current on microstructure and mechanical properties is responsible for the number, energy of emission target particles and distribution of target droplets.
The microstructure of Ni-Nd2O3 nanocomposite coatings after oxidation was examined.Torabinejad, V., Aliofkhazraei, M., Rouhaghdam, A.S., Allahyarzadeh, M.H., Tribological performance of Ni-Fe-Al2O3 multilayer coatings deposited by pulse electrodeposition, () Wear.
Electrodeposition of Ni oxide on TiO 2 nanotube arrays for enhancing visible light electrolyte were loaded with Ni oxide nanoparticles by a pulse electrodeposition method. The fabricated NiO x/TiO 2NTs electrodes were characterized by ﬁeld emission scanning electron microscopy (FESEM).
Pulse electrodeposition and characterisation of Ni–SiC composite coatings in presence of ultrasound G. Gyawali1, S. H.
Cho1, D. J. Woo2 and S. W. Lee*3 Ni–SiC nanocomposite coatings have been prepared by electrodeposition with the application of. The formation and electrochemistry of Ni–Co nanoparticles at the electrode surface as well as their variations with different electrodeposition conditions have been determined by cyclic voltammetry (CV).
Ni-ZrO2-CeO2 nanocomposite coatings were prepared by pulse electrodeposition. The effect additions of ZrO2 and CeO2 nanoparticles, average current density, duty ratio and frequency of pulse current on nanoparticle contents of Ni-ZrO2-CeO2 nanocomposites were studied.
Pure and composite nickel deposits containing nano-TiO2 particles (d m = 21 nm) were produced under direct-DC and pulse current-PC conditions. The influence of pulse frequency on the codeposition of TiO2 particles, preferred orientation of Ni crystallites and grain size, as well as microhardness of the composites, was investigated systematically.Download