If you want a scratch resistant coating then yes.
Yes. Any metal or mineral will scratch itself and anything softer than it on the hardness scale.
If you mean for actual purchase I listed some industrial sources that will likely be much cheaper than chemical supply houses in the related links.
Since it is very expensive it is hard to get it...
comes from a fine sand in Australia called rutile.Titanium are rare in the earth's crust and is the seventh in the abundance(there is 0.42% in the crust). For the smelting of titanium minerals are...