Orbital - Vol. 14 No. 3 - July-September 2022
SHORT COMMUNICATIONS

New Findings Regarding the Thermal Oxidation and Biomimetic Depositions on the Corrosion Resistance of the Ti-6Al-4V Alloy

Carolina Aurélia Ribeiro Maestro
Materials Engineering Department, University of São Paulo (USP)
Alysson Helton Santo Bueno
Mechanical and Industrial Engineering Department, Federal University of São João del-Rei (UFSJ)
Roseli Marins Balestra
Mechanical and Industrial Engineering Department, Federal University of São João del-Rei (UFSJ)
Artur Mariano de Sousa Malafaia
Mechanical and Industrial Engineering Department, Federal University of São João del-Rei (UFSJ)
Jeferson Moreto
Universidade Federal do Triângulo Mineiro
Published October 2, 2022
Keywords
  • Ti-6Al-4V alloy,
  • Thermal oxidation,
  • Biomimetic deposition,
  • Potentiodynamic polarization tests
How to Cite
(1)
Ribeiro Maestro, C. A.; Santo Bueno , A. H.; Marins Balestra, R.; de Sousa Malafaia , A. M.; Moreto, J. New Findings Regarding the Thermal Oxidation and Biomimetic Depositions on the Corrosion Resistance of the Ti-6Al-4V Alloy . Orbital: Electron. J. Chem. 2022, 14, 196-199.

Abstract

Our research group has been working on the surface functionalization of Ti-6Al-4V alloy by using thermal oxidation followed by CaP and Bi-CaP biomimetic depositions. In this short communication, we present new insights into the corrosion behaviour of the treated system by using potentiodynamic polarization tests. Our results demonstrated lower values of electric current density for the CaP specimens when compared to the Bi-CaP, indicating a tendency for the CaP samples to remake the passive film. Another reasonable explanation may be related to the displacement of CaP particles or the formation of corrosion products that partially block the pores of the coating. Morphological analyzes of all treated surfaces after the potentiodynamic polarization tests also suggest the improvement of the corrosion resistance of the Ti-6Al-4V alloy.