Nickel–Iron coating was formed from a sulfate base electroplating bath under current density of 3 A/dm 2 and turbulence 300 rpm on previously prepared cylindrical steel substrate. In order to obtain sample including nickel composite coating, different amounts alumina particle powder were added the plating solution in question. By adding quantities ferrous 2.5 rpm, an optimal containing 20 g/L o...

The biomass of Aspergillus flavus was modified by calcium chloride to achieve a bioadsorbent for treating nickel, cobalt, and zinc ions from aqueous solutions. The information of pH, bioadsorbent dose, contact time, and temperature effect on the removal efficiency are presented. The data of Freundlich and Langmuir isotherm and pseudo-first-order and pseudo-second-order kinetic models are also d...

Electrochemical dual-pulse plating with sequential galvanostatic and potentiostatic pulses has been used to fabricate an electrocatalytically active Ni/Ni(OH)2/graphite electrode. This electrode design strategy to generate the Ni/Ni(OH)2 interface on graphite from Ni deposits is promising for electrochemical applications and has been used by us for hydrogen generation. The synergetic effect of ...

We have analyzed the effects of immersion gold (i-Au) and electroless nickel (e-Ni) thickness, on the reliability of a semiconductor device which has special constraints on the absolute Ni and Au layer thickness. The electrochemical reactions involved in the deposition of immersion Au over Ni involves a substitution process by which Ni atoms are replaced by Au atoms. We demonstrate that in some...

Slow strain rate tests were performed on quenched and tempered AISI 4340 steel to measure the extent of hydrogen embrittlement caused by electroplating with zinc-cobalt alloys. The effects of bath composition and pH were studied and compared with results for electrodeposited cadmium and zinc-10%nickel. It was found that Zinc-1%cobalt alloy coatings caused serious hydrogen embrittlement (EI 0.63...

Nickel-plated punched steel strip is a product obtained by punching holes on the surface of cold-rolled white sheet and then electrochemical nickel plating. It necessary to make accurate fast detection circle parameters, since it crucial importance ensuring quality nickel-plated strips. Accordingly, in this article, an improved fitting algorithm proposed. Firstly, least squares performed obtain...