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Coatings on glass

 

Does anyone have experience with deposition of gold and/or nickel onto glass (i.e., glass microscope slides)?

Thanks,

Greg Testa
- Cambridge, Massachusetts

Sometimes gold plates, out of a spent aqua regia solution, to the glass jar I use to precipitate 99% purity gold if I add a slight excess of urea prior to the precipitation, and use slightly less SO2 than is required to precipitate 100% of the gold. As for why this happens, I am not sure. It may not be a true plating, only a coating, but it takes an additional acid treatment to remove the gold from inside the jar. Hope this helps.

William Earnshaw, Sr
- Midland, Virginia, USA

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You might look at sputtering. Gold and nickel are often sputtered on non-conducting surfaces to prevent charge-up in SEM's, so there are a large number of small sputter chamber around. If you want good adhesion, you'll need to add an ion beam to mix the coating into the surface.

Jim Treglio - scwineryreview.com
PVD Consultant & Wine Lover
San Diego, California
 

Dear Greg Testa,

Maybe you need glass plating for research purpose so you need simple method in lab. Glass could be etched with[acidified amm.fluoride] then activated with [pd-tin] activator finally electroless plated with gold or nickel as you want may be you increase the thickness by electroplating of nickel or gold.

Best regards,

RAAFAT ALBENDARY
- CAIRO, EGYPT

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We routinely deposit nickel onto glass, by the Chemical Vapour Deposition process.

Mick O'Meara
- Toronto, Canada
 

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Sir

I am a research scholar, and working on electroless coating. Sir I want to know what are the pretreatment and the bath composition for the coating on glass. Can you give me any help on this purpose. thanks

Rahul Sharma Indian Institute of Technology, Roorkee - Roorkee, Uttranchal, India