Jinku Yu

Properties of ternary NiFeW alloy coating by jet electrodeposition

In this paper, ternary NiFeW alloy coatings were prepared by jet electrodeposition, and the effects of lord salt concentration, jet speed, current density and temperature on the properties of the coatings, including the composition, microhardness, surface morphology, structure and corrosion resistance, were investigated. Results reveal that the deposition rate reaches a maximum value of 27.30

Characteristics of bulk liquid undercooling and crystallization behaviors of jet electrodeposition Ni–W–P alloy

\upmu \hbox {m}\hbox { h}^{-1}

Effect of Plastic Deformation on the Crystal Structure and Crystallization Activation Energy of Ni-W-P Alloy Coating

μmh-1, and the total current efficiency is above 85%. The maximum microhardness is 605 HV, and the wear and corrosion resistance values of the alloy coating are good. Moreover, the ternary NiFeW alloy coating is smooth and bright, and it presents a dense cellular growth. The alloy plating is nanocrystalline and has face-centered cubic structure.

Spark Sintering Behavior of Ubiquitously Fe-B and Fe Powders and Characterization of Their Hard Composites

The effect of plating temperatures between 60 and 90°C on structure and corrosion resistance for electroless NiWP coatings on AZ91D magnesium alloy substrate was investigated. Results show that temperature has a significant influence on the surface morphology and corrosion resistance of the NiWP alloy coating. An increase in temperature will lead to an increase in coating thickness and form a more uniform and dense NiWP coatings. Moreover, cracks were observed by SEM in coating surface and interface at the plating temperature of 90°C. Coating corrosion resistance is highly dependent on temperature according to polarization curves. The optimum temperature is found to be 80 ∘C and the possible reasons of corrosion resistance for NiWP coating have been discussed.

Effect of Saccharin on the Structure and Properties of Electrodeposition NiWP Alloy Coatings

The undercooling of Ni–W– P ternary alloy coating melt was investigated by in situ differential scanning calorimeter (DSC) with the flux processing technique. The results showed that the highest undercooling of Ni–W–P ternary alloy with 359 K was obtained as the thermal treatment temperature of the melt being 1679 K and the cooling rate being 50 K min−1. When cooling rate is fixed, the change of undercooling depends on the melt processing temperature, and the undercooling will increase rapidly at the first stage. The effects of thermal treatment temperature and cooling rates on the undercooling were discussed.

High Temperature Characterization of Binary and Ternary Bi Alloys Microalloyed with Cu and Ag

NiWP alloy coatings were prepared by electrodeposition, and the effects of ferrous chloride (

Effects of Sodium Hypophosphite on the Behaviors of Electrodeposited NiWP Alloy Coatings

\hbox {FeCl}_{2})