Accession Number : ADD000868

Title :   Method of Electrodepositing Iridium.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : MacNamara,Elizabeth L

Report Date : 21 Sep 1965

Pagination or Media Count : 2

Abstract : The prior art has generally disclosed broad principles for the electrodeposition of metals. However, the meager efforts to satisfactorily electrodeposit iridium have met with relatively little success. The deposits which such prior art techniques have provided generally have proved unsatisfactory due, for example, to the existence of flaws including pits, blemishes, inclusions and cracks which appear in the structure of the deposit. It is therefore a principal object of this invention to provide a method wherein iridium may be successfully electrodeposited directly onto various base metals. Another object of the invention is to provide suitable bath composition for electrodepositing iridium which is characterized by the single addition of an acid to water and to provide a method and means for obtaining an electroplate of iridium which possesses high cohesive and adhesive properties and therefore will not peel from the base metal upon which it is plated. A further object of the invention is to provide an electrodeposit of iridium characterized by a bright, metallic, lustrous appearance, said electrodeposit being continuous and non-discrete.

Descriptors :   *Patents, *Iridium, *Electrodeposition, Metal coatings, Adhesion, Iridium compounds

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE