Summary for transparent coating for silver plating Discussion
Transparent coating for silver plated copper is the main issue in this thread: Jitendra Palavwala asks how to keep a very thin silver-plated copper sheet from turning dull and black after about a year while still preserving its appearance. Gurvin Singh says the common solution in hardware and jewelry is an electrophoretic clear lacquer applied after plating, which can provide many years of protection depending on end use. Parthiban Senguttuvan agrees, calling electrophoretic lacquering the most common method for protecting silver-plated articles from tarnishing and noting that proprietary lacquers are available in India. The discussion is focused on preventing silver from contacting the environment with a transparent topcoat, rather than changing the silver layer itself. No alternative process is recommended in the answers, and both responses point to clear electrophoretic lacquering as the practical route.
Q. Respected Sir,
I visited your website, and its great website for us. Thank you very much for your help and support. I am in search of one technique, maybe any type of coating which will help my product not getting corroded.
Our product is very very thin sheet of copper used to mfg. some handicraft materials.
First of all we made the copper sheet with cross section of about
0.8 X 0.001 mm. then we do coating of silver on this copper thin sheet. But the problem is that, the silver is getting dull I mean it get black color automatically after about 1 year of time. We know that original silver metal if we kept very long time it will not loss is silver shining, but here it losses the shining. My Q. : is there any technique, that we can apply on our final product (thin silver plated copper sheet)?
I’m thinking of such coating which should be transparent and that will not let the silver comes in contact with environment, so in this way the silver can resume its shining very long time same time the transparent coating will help the product looking same as before. Hope 2 reply from you soon.
Best Regards,
Jitendra Palavwala
– Surat, Gujarat, India
2003
A. The process used in both hardware and jewelry line is to do a electrophoretic clear lacquer after plating. Gives many years of great protection, depending upon the end use.
Gurvin Singh
Mohali, Punjab, India
 | A. Surface Tension can be checked with a simple laboratory instrument called STALAGMOMETER. Archana Lakshmi A. Electrophoretic lacquering is the most common method for protecting silver plated articles from tarnishing. Proprietary lacquers are available in India. Parthiban Senguttuvan |