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.
Read this article from a comprehensive knowledge base, updated and supplemented with articles reviewed by scientific committees.
Read the articleAUTHOR
-
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.
The Ultimate Scientific and Technical Reference
EDITIONS
Other editions of this article are available:
This article is included in
Metal treatments
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Electrolytic deposits
Background and applications
Bibliography
Standards and norms
- MIL Rhodium plating, electrodeposited. - MIL-R-46085A - 1984
Regulations
General Tax Code, Title III, Chapter II, Section VII, Article 551.
Decree of July 18, 2000, prohibiting the marketing of certain products containing nickel (Consolidated version as of April 25, 2009).
Patents
J.W. Chevalier, M.D. Gernon, P.K. Janney Precious Metal Deposition Composition and Process USP6251249, 2001.
G.D. Fatzer Method for Plating Palladium USP3150065, 1964.
H. C. Angus, J.M. Stevens Electrodeposition of Palladium USP3544435, 1970.
A.R. Powell, E.C. Davies Electrodeposition of Palladium USP1921941, 1933.
F. Zuntini, J.M....
The Ultimate Scientific and Technical Reference
