Effect Of Thermal Treatment Of Two Titanium Alloys (Ti-49Al & Ti-51Al) On Corrosion Behavior In 0.01 M Various Acidic Media

Paper ID : 1006-ICBAS2024-FULL

Authors

Azza El Sayed El shenawy *1, Rabab mohamed Abou Shahba2, Amal Ahmed El Roby3 1Al Azhar University 2Al Azhar University 3A Azhar University

Abstract

In this paper, the effect of thermal treatment of (Ti-49Al & Ti-51Al) alloys on corrosion behavior in 0.01 M H2SO4, H3PO4, HNO3 and HCl solutions was investigated. Potentiodynamic polarization measurements, were performed for the two alloys in 0.01 M acidic media at room temperature. The polarization curves indicated three regions. The first region, active dissolution region was observed from – 2000 to ~ - 700 mV(SCE), the second region, signifying the transition from active dissolution to passive state on electrode surface and the third region, a trans-passive region, which the oxygen started to evolve and the current density increased sharply with further increase in potential. The surface morphology of two alloys used to confirm the degradation mechanism was examined by scanning electron microscopy (SEM) and energy dispersive x-ray analysis (EDX). The results from scanning electron microscopy (SEM), were confirm the degradation of Ti-Al alloys due to uniform corrosion in HCl solution

Keywords

Titanium alloys, Thermal Treatment, 0.01 M Acidic media.

Status: Accepted (Poster Presentation)