Abstract
In situ Raman spectroscopy was used to study the dissolution of phosphate layers on zinc coated steel in dilute sodium hydroxide solution. The Raman intensity of the symmetrical stretching vibration of the phosphate anion was used to quantify the relative amount of phosphate on the surface. During exposure to an alkaline electrolyte, the intensity was found to decrease in a near linear manner, indicative of the removal of the phosphate anion. Crystal layers containing secondary ions Mn 2+ and Ni 2+ showed an improved stability compared to monocation zinc phosphate layers. The formation of amorphous Mn-hydroxide was observed on phosphate layers containing manganese.
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.
