Overview
ABSTRACT
The electrolytic deposition of platinum and platinoids allows for the production of a metal layer on a conductive substrate by cathodic reduction of oxidized forms in solution of metals such as platinum, palladium, rhodium, ruthenium, osmium and iridium. This article describes the most common families of formulation for each of these metals, treated separately, as well as the conditions for obtaining the coating and its principal characteristics. The preparation of surfaces prior to deposition is briefly dealt with. A chapter is dedicated to the precautions to be taken when implementing these processes in order to limit their impact on health and the environment.
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Lionel CHALUMEAU: Doctor of Physical Chemistry - Head of Production Sites at the Precious Metals Refining and Finishing Company
INTRODUCTION
Platinum and the metals of the platinum group (palladium, rhodium, ruthenium, osmium, and iridium) are classified as noble metals and, as such, possess desirable physical and chemical properties for both technical and decorative applications.
Noble metal coatings, produced by electrolysis in aqueous media, involve the use of chemical mixtures that are often harmful and sometimes toxic. For example, platinum group metals often require the use of highly concentrated acids and bases to solubilize their oxidized forms.
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Electrolytic deposits
Background and applications
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"Metal treatments"
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