The Effect of Some Organic Additives on the Corrosion of Titanium in Hydrochloric Acid.

摘要

The dissolution of titanium in hydrochloric acid has been the subject of detailed study. It is possible to slow this process by adding different oxidants (nitric acid, chromic acid) or ions of metals (Cu(2+), Fe(3+), Rt(4+), etc.) to the solution. Not long ago it was shown that several amines of o, m, p isomers of nitro anilines and nitrophenols and also a mixture of urotropine with calcium iodide are effective corrosion inhibitors for titanium in acid media. The authors studied the effect of several organic additives of the amine type and industrial inhibitors on the rate of dissolution of titanium in hydrochloric acid. As it turned out, such effective acid corrosion inhibitors as katapin, BA-6, PB-8/2, a mixture of urotropine with calcium iodide, and also amine-type compounds possess relatively small protective properties. (Author)