Chromium and its compounds are widely used in many industrial fields such as plating, alloying, dyeing, tanning, finishing, wood preserving and refractory technologies.
Cr-mediated ground water and soil pollution need to be controlled either by avoiding its spills from various industries such as plating, alloying, tanning of animal hides, inhibition of water corrosion, and textile dyes [ 2] or by exploiting plant-based phytoextraction technologies.
Coatings were manufactured by co-deposition of tin and aluminum on nickel plated alloy 800H via powder pack cementation with different dwell times.
The corrosion resistance of the pulse-plated Ni 35.8 wt.% Cu alloy, as evaluated by potentiodynamic polarisation studies in deaerated 3 wt.% NaCl solution at 50°C, is better than that of the DC-plated alloy and the commercial Monel-400.
The plated alloy layers adhered well to Cu Zn brass and steel, were of thickness from a fraction to tens of micrometers and the molybdenum content was independent of the distance from the support.
At sufficiently short pulse periods, the Mo content of the pulse plated alloys was higher than in dc plating.
Because transformation from strong austenite leads to fine plates, alloys can be designed such that the bainite transformation is suppressed to low temperatures (125 350 °C), leading to a nanoscale bainitic microstructure.
Metal plating, metallurgic alloying, ceramics, textile printing industry, photograph development, electroplating, alkaline battery manufacturing are the major industrial fields responsible for cadmium pollution (Kadirvelu et al. 2001; Zhu et al. 2007).
The brush plating Zn Ni alloy coating is an effective barrier to copper element diffusion and the brush plating Sn Zn alloy coating is in capacity of anti-oxidation passivation.
The pulsed current can have a significant influence on the composition, morphology and properties of electrodeposited coatings and this is particularly true when plating an alloy.
