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SUMMARY
As a noble metal, Iridium finds many applications in the industry. Electrodeposited iridium, as a thin coating, provides a cheaper method of using the metal wherever possible. Iridium and platinum-iridium alloy are used in industrial water electrolysis as anodes because of their low oxygen overpotential. Of all the baths available for electrodepositing iridium, the bromide electrolyte appears to be the best. Different methods of preparing the bromide electrolyte are compared: the one prepared using iridium chloride gives improved performance with respect to stability, current efficiency, higher deposit thickness, and appearance of the deposits, besides its cost effectiveness.
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Notes on contributors
G. Sheela
G. Sheela is a graduate, working as a Project Assistant for the past 6 years in the area of environmental pollution control, water electrolysis and industrial metal finishing.
Malathy Pushpavanam
Dr. Malathy Pushpavanam is a senior scientist, having over 30 years of experience in research in the area of electroplating and metal finishing, corrosion engineering and water electrolysis.
S. Pushpavanam
Dr. S. Pushpavanam is a senior scientist, heading the electro-inorganic group, having over 35 years of experience in research in the area of electrochemical preparation of per salts, environmental pollution and industrial water electrolysis.