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Transparent coating on thin silver plated copper sheet

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

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