Abstract
Copper immersed in a 0.025 M Na 2S 4 solution at pH 11 turns black at a characteristic time that is controlled by the presence of films or contaminants on the copper surface. The color change occurs coincident with an abrupt change in the corrosion potential. It is hypothesized that the rate-controlling step is the conversion of elemental copper and/or copper (I) to the copper(II) valence state. The rate of this reaction is controlled by the chemical nature of the copper surface. The procedure shows promise for characterizing the cleanliness of copper surfaces.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
