A Survey of the Porosity in Gold and other Precious Metal Electrodeposits

Publisher Website
Google Scholar
Abstract
The causes of pores in precious metal coatings are briefly reviewed and anomalies in the surface roughness theory mentioned. Close investigation of the relation between porosity and coating thickness reveals three stages: an initial fast coverage of most of the substrate, followed by an intermediate region where the useful reduction in porosity depends to a large extent upon the plating bath composition and operating parameters, and a third region where porosity is insensitive to coating thickness. Mechanisms of pore formation are dealt with.