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Plating of pipe internals with TIO2



(-----) February 4, 2008

Hi!

I would like to plate TIO2 internally on pipes of any materials, preferably CS or 316 which will be used as UV reactors in an oxidation process.

Is there ny technology avaialbe for this application.

Halvor Nilsen
inventor - Stavanger, Norway
^


First of two simultaneous responses -- February 11, 2008

Halvor,

Do you mean Titanium dioxide? If so there are a couple of ways you could consider, depending on how thick a layer you want.
There is the alkaline anodising route which produces the thickest layer.
Then there is the sulphuric acid anodising route, produces a much thinner coating but does have a nice blue hue to it.
There is also the oxidising route such as an alkaline peroxide mixture. Again produces a very thin coating.

Brian Terry
Aerospace - Yeovil, Somerset, UK
^


Second of two simultaneous responses -- February 11, 2008

Halvor

One suggestion.
It would be easiest to start with titanium tube - but expensive. Alternatively you could coat the inside of your tube with titanium by vacuum deposition. Then anodise the titanium. Both are well known processes.
How practical this would be depends on eg. bore/ length of the tube, how thick you need the oxide etc.
Working inside a tube is always difficult but you may be able to use the tube as its own process tank.

geoff smith
Geoff Smith
Hampshire, England
^

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