You mean we can etch titanium using caustic soda? Why has
nobody told me this before? I have to try this. Tony Konrath
G’day Tony; No, I didn’t actually say that; I was suggesting that it
is very likely that caustic soda would corrode titanium metal. In
fact, you would probably get titanium hydroxide as a powdery white
corrosion product, which is insoluble in water, and that would change
to titanium dioxide in time. And that is also insoluble. However,
titanium metal is soluble in dilute sulphuric acid, producing titanium
sulphate, and that IS soluble in water. So you might try sulphuric
acid for etching.
Titanium and silicon metals (not aluminium) are in fact fairly
similar in their properties. Perhaps I might add here, to avoid
confusion, that silicon IS a metal, and it’s oxide is sand or quartz.
SilicONES are essentially carbon based compounds which have silicon in
their atomic structure. – Cheers for now,
John Burgess; @John_Burgess2 of Mapua Nelson NZ