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topic 4705

Titanium coating or electroplating


(2000)

My company develops products for several housewares importers. We have been discussing the possibility of placing a Titanium coating on housewares (Stainless steel, mild steel and plastic) and need to know if this is possible. Also, the coating would need to be safe for contact with food.

Michael Witthoft
- Hong Kong


(2000)

Titanium cannot be electroplated, but it can be vacuum deposited.

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


(2000)

You can vacuum deposit various coatings on stainless steel and mild steel, but it is hard to get coatings to adhere to plastics -- the deposition temperatures are too high. Coatings that are commonly applied for appearance include ZrN for gold and CrN for silver. ZrN is safe, but there may be some concerns with CrN. Also, some of these coatings have been tried on kitchen knives without success. The coatings looked good, and added to the wear life (very significantly), but here in the US most knives are cleaned in dishwashers. Galvanic corrosion resulted. If you are interested in purchasing a system, check with Vapor Technologies in Colorado or Hauzer in the Netherlands. Both will coat some samples for you.

jim treglio portrait
Jim Treglio
- Vista, California


(2002)

I'm also investigating of the possibility of electrodeposition of titanium or titanium dioxide on copper surface for manufacturing of electronics components. Seems like thickness of vacuum deposition of titanium cannot reach few micron with good uniformity.

Stanley Leung
- Hong Kong, PRC


(2003)

Titanium can be electroplated if we can believe two old (35 years) Russian books. You can use titanium hydroxide/ammonium chloride water based bath or titanium chloride/toluene based bath. To be continued!

Goran Budija
- Zagreb, Croatia


(2004)

1. Ti(OH)2.......100 gms
HCl...........40 gms
NH4Cl.........100 gms
H2O...........1 lit
pH4-5,temp. 30-5o C,3-4 A/dm2

2.38 TiCl3.............38 gms
toluene...............200 ml
o,o2% pitch or resin (?)
8oo ml ethyl alcohol(?)
graphite anode,21 A/dm2,18 C temp.

from L.I Kadaner:Galvanostegija(Electroplating),KIev 1964

Goran Budija
- Zagreb, Croatia


(2005)

Dear Goran Budija
Have you really tried the Ti electro plating methods you describe. I wish to try it out. Any suggestions precautions?

Raghunathan V S Dr
Scientist - Kalpakkam, Tamil Nadu, AND India



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