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Titanium Etch - Heat of Rxn

I am trying to identify the heat of reaction for HF etching of titanium. Does any one have an idea of the products formed from this reaction (TiF4)?

Silvan Larson
- Schaumburg, Illinois
1999

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The Ti dissolves to form the complex ion [Ti (F)6] 2- At low pH's I suppose it could be called H2TiF6, or hydrofluotitanic acid.

Dave Wichern
Consultant - The Bronx, New York
1999

Titanium Problem , During chemical etch , parts are pitting. Similar to the electrical damage a screw driver arching on the car starter receives . Help!

Ken Jagd
- El Cajon , Calif. USA
1999

To Ken Jagd. Ken: We specialize in electrochemical machining of several metals. We have developed a solution that avoids pitting by using special chemicals and electricity for titanium.

Kirk O'Brien
- Boulder, Colorado
1999

We have been experiencing problems controlling the HF and Nitric ratios in our tanks. I was wondering if there is an instrument available for monitoring the tank with upper and lower limit alarms.

Walter Love
- El Cajon, California
2000

I need to chemical etch the oxidisation of Nickel Titanium alloy to allow me to braze or solder the material to another mettalic surface. So far all responses have had HF as the main ingredient. Unfortunately I'm not allowed to use this in our company. Can anyone tell me another process.?

Paul Muir
- Dundee
2002