Dissolution Behavior of Silver Anode in Cyanide Free Bath

The cyanide-free silver plating bath that we developed produced good silver film, but the cell voltage of the bath increased over time if electrodeposition was conducted continuously. Green film also formed on the silver anode with increasing voltage. To clarify these phenomena, we studied the anodi...

Full description

Saved in:
Bibliographic Details
Published inHyōmen gijutsu Vol. 49; no. 3; pp. 320 - 322
Main Authors MASAKI, Seishi, KONDO, Tetsuya, INOUE, Hiroyuki, HONMA, Hideo
Format Journal Article
LanguageEnglish
Japanese
Published Tokyo The Surface Finishing Society of Japan 01.03.1998
Japan Science and Technology Agency
Subjects
Anodic Dissolution
Cyanide Free Silver Electroplating
Online AccessGet full text

Cover

More Information
Summary:The cyanide-free silver plating bath that we developed produced good silver film, but the cell voltage of the bath increased over time if electrodeposition was conducted continuously. Green film also formed on the silver anode with increasing voltage. To clarify these phenomena, we studied the anodic polarization behavior of the silver electrode in the cyanide-free bath. The X-ray diffraction pattern for the green film agreed with that of AgI. Anodic polarization curves for the silver electrode indicated that less-conductive film formed on the electrode when the potential exceeded-0.3V. The polarization curve limiting current was increased by agitating the bath or increasing KI concentration. These results iudicate that Ag was dissolved into the solution via AgI rather than dissolving directly into the bath.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0915-1869
1884-3409
DOI:10.4139/sfj.49.320