DEPOSITION OF Cu/Ag FILM AT THE VARIOUS DEPOSITION TIME FOR RESULTING THE HIGH QUALITY DECORATIVE SILVER

Deposition of OwAg film with electroplating method at the various deposition time of Ag has been performed to produce high quality decorative silver. The criteria of high quality performance consist of two parameters, i.e. the ordering of crystalline structure and the reflectance coefficient. Copper (Cu) plate was used as substrate which is coated with silver (Ag) in the KCl plating bath with various deposition times from 5 up to 8 minutes. The ordering of crystalline structure was characterized by XRD, while reflectance coefficient is obtained with measuring the reflected polychromatic rays (lamp 10 volt, 1.2 mA) by LDR. The result shows that Ag film 7 minutes deposition has the highest ordering of crystalline structure, and also this film has the reflectance coefficient of about 85%. Thereby, this film is the best quality for decorative silve