Metal finishing Q&As since 1989
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Transparent coating on thin silver plated copper sheet
2003
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
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 SinghMohali, Punjab, India
2003
First of two simultaneous responses
Surface Tension can be checked with a simple laboratory instrument called STALAGMOMETER.
Archana Lakshmi- Visakhapatnam, Andhra Pradesh, India
2003
Second of two simultaneous responses
Electrophoretic lacquering is the most common method for protecting silver plated articles from tarnishing. Proprietary lacquers are available in India.
Parthiban Senguttuvan- Visakhapatnam, Andhra Pradesh, India
2003
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