RESISTANCE OF TITANIUM TO SULFURIC AND HYDROCHLORIC ACIDS INHIBITED BY FERRIC AND CUPRIC IONS

摘要

Ferric and cupric ions are effective inhibitors for the corrosion of titanium in boiling 10％ hydrochloric acids. As little as 0.005 mole of Fe+++ or Cu++ per liter reduces the corrosion rate from intolerably high values to those typical of class materials. The corrosion rates range from 3 to 55 mdd (0.001 to 0.012 ipy) for inhibitor concentrations from 0.03 to 0.005 mole per liter.