5 wt % Co, are of both theoretical research and practical interest due to the anomalous codeposition behavior, the preferential deposition of less noble metal, and to the material's low coefficient of thermal expansion, CTE. A better understanding of anomalous codeposition allows for controlling the deposition rates of individual Fe, Ni, and Co metal during codeposition and hence the compositio...

A mathematical model was developed which evaluates the effect of the applied deposition parameters on the composition of deposited Fe-Ni-Si02 composites. This model assumes that the discharge rates of Fe(OH)+ and Ni(OH)+ are proportional to their respective surface coverage fraction. The inclusion of Si02 with the deposited alloys is considered. Introduction Fe-Ni deposition is classified as an...

a r t i c l e i n f o Zn–Ni, Zn–Co and Zn–Ni–Co coatings were electrodeposited on mild steel from an acidic chloride bath containing p-aminobenzenesulphonic acid (SA) and gelatin. These additives changed the phase content in the coatings, most likely as a result of their adsorption at the surface of the cathode. The effect of gelatin was more pronounced than that of SA. The Faradaic efficiency ...

Metal/carbon composite plating is an effective strategy for improving and adding properties to metal by incorporating carbon materials into the matrices. Copper (Cu) widely applied, particularly in areas of heat management electronic packaging owing its high thermal electrical conductivities, which can be further improved together with improvements mechanical compositing it nanotubes (CNTs). Ho...

Linear sweep voltammetry has been used as an “in situ” technique to characterize thin layers of ZnNi alloys. The zinc dissolution peak potentials from ZnNi deposits were found to be more noble [El,= -0.7V (SCE) and Ez,= -0.575 V (SCE)] than those of the pure metal ions [-OX3 V (SCE)] due to a formation of two ZnNi intermediate phases 7 and 6 respectively. The effect of d c and pulse parameters ...

The objective of this study was to improve the oxidation resistance of electroplated Ni-Cr coatings by introducing a fine dispersion of yttria (Y2O3) nanoparticles to the coatings. A technique was developed to produce Y2O3 nanoparticles nm in size. Electroplating conditions were also investigated and it was found that pulse plating could produce high quality coatings without cracking. The Y2O3 ...

Pulsed electrolysis of copper has been systematically investigated by electrodepositing copper from a copper sulfate bath. Pulse duty cycles of 5 to 80 percent, at frequencies from 10 to 100 Hz with current densities ranging from 2.5 to 7.5 A/dm2 were employed. The appearance of Hull Cell panels with both direct current and pulsed current was recorded. The influence of pulsed current on current...

We demonstrate two nanofabrication methods which improve the diffraction efficiency of high-resolution soft X-ray nickel zone plates. First, pulse electroplating is shown to result in uniform diffraction efficiency over the entire zone-plate area. A resulting enhancement of the total efficiency of 20% compared to conventional DC plating was measured. Second, we demonstrate that a high-resolutio...