Tribological and electrochemical corrosion behavior of Ni–W/BN (hexagonal) nano-composite coatings

Studies on the electrodeposition and characterization of PTFE polymer inclusion in Ni–W–BN nanocomposite coatings for industrial applications

“…The proposed equivalent circuit for examine the impedance spectra is shown in Fig.14 (b). Hence, PC coating was more corrosion resistant than the electrodeposited DC coating 30 nanocomposite coating has exhibited better performance than the deposits obtained from the direct current nanocomposite coating due to the uniform, crack free deposits and also smaller crystalline size. Hence, PC coating was more corrosion resistant than the electrodeposited DC coating 30 nanocomposite coating has exhibited better performance than the deposits obtained from the direct current nanocomposite coating due to the uniform, crack free deposits and also smaller crystalline size.…”

The influence of pulse plating parameters on microstructure and properties of Ni-W-Si3N4 nanocomposite coatings

“…According to Sangeetha and Kalaignan [24], by adding dispersant, zeta potential of the nanoparticles would be increased. The positive Zeta potential gives the extra adhesion force between the inert particles and the cathode, resulting in good adhesion between substrate and deposits was achieved.…”

“…It indicated that due to the addition of Si 3 N 4 , homogeneous corrosion has priority to take place while localized corrosion is inhibited. Si 3 N 4 nanoparticles played a major role for improving the corrosion protection of composite coatings, which can be explained by the mechanism that nanoparticles can fill defects of the alloy surface such as small pores and holes and act as inert physical barriers to corrosive ion diffusion to the electrode surface as well as reduce metallic exposed area, thus improving the corrosion resistance of the coating [24]. Besides, the uniformly distributed Si 3 N 4 nanoparticles in the deposit were behaved as a passive layer between corrosive media and the deposition surface to prevent the corrosion occurred.…”

Structural evaluation and mechanical property of boron nitride fibers during melt‐drawn fabrication process

“…In the organic precursor method, the used precursors are not only harmful to health but also require experienced and strict calculation and operation conditions to control the chemical reactions to obtain the final product. Thus, the overall process of the organic precursor transformation method is complex and time‐consuming . However, the melt‐drawn technique is direct, convenient, and timesaving in fabricating the BN fibers.…”

“…Thus, the overall process of the organic precursor transformation method is complex and time-consuming. [19][20][21] However, the melt-drawn technique is direct, convenient, and timesaving in fabricating the BN fibers. Until now, the structure and properties of BN fibers have been reported in many literatures, [22][23][24][25] but there are only few reports about the evolution of structure and properties during the fabrication of BN fibers.…”