Inhibition of titanium corrosion in alkaline hydrogen peroxide bleaching environments

The corrosion of Grade 2 titanium in alkaline hydrogen peroxide environment s has been studied by weight loss corrosion tests, electrochemical impedanc e spectroscopy (EIS), linear polarization resistance (LPR) measurements and potentiodynamic polarography. Calcium and pulp were investigated as corros ion inhibitors. The effectiveness of calcium over extended time periods was found to be questionable. Pulp behaved as a more stable corrosion inhibito r than calcium. Raising the pulp concentration decreased the corrosion rate . The titanium corrosion rate did not appear to be affected by slurry veloc ity.