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topic 3117

Titanium conductive coating, dark grey, on titanium


Looking for a conductive coating to be deposited on titanium substrate. The coating itself is dark grey with the coating consisting mostly of titanium and 2%Al. Need corrosion resistance in addition to conductivity of the coating. Hardness is not an issue. It is not TiAlN coating. Preferably, it should be some conversion coating, since I also need to deposit the coating uniformly on the inside of the titanium tubing.

Lee Feldman
instruments - Broomfield Colorado


Anodizing in trisodium phosphate [linked by editor to product info at Amazon] at an appropriate voltage might be an option. The oxide color is determined by the voltage and the surface roughness of the part. It is a very hard coating but is thin. Since it is thin, ant the word conductive is very very relative, you might be able to get adequate contact with a nut/bolt or screw, possibly with a star washer. Non toxic and extremely rapid coating.

James Watts
- Navarre, Florida


You could also try the conversion coating formula found in the ASM Metals Handbook Volume 5: Surface Engineering


tom pullizzi monitor
Tom Pullizzi
Falls Township,

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