Corrosion and passivation behavior of laser powder bed fusion produced Ti-6Al-4V in static/dynamic NaCl solutions with different concentrations

P. Qin, L. Y. Chen, Y. J. Liu, Z. Jia, S. X. Liang, C. H. Zhao, H. Sun, L. C. Zhang

Research output: Contribution to journalArticlepeer-review

85 Citations (Scopus)

Abstract

In this work, the corrosion and passivation behavior of Ti-6Al-4V produced by laser powder bed fusion (L-PBF) were investigated in different concentration of NaCl solutions under static and dynamic conditions. Oxide films including TiO2, Ti2O3, TiO were formed on L-PBF-produced Ti-6Al-4V. The film thickness increased under both test conditions with increasing the Cl concentration, and the film contained more TiO2 in dynamic conditions under the same Cl concentration. The mechanism of the corrosion behavior and film growth under different Cl concentration and electrolyte conditions were discussed by the relevant electrochemical and surface characteristic measurements, e.g. Mott-Schottky analysis, X-ray photoelectron spectroscopy.

Original languageEnglish
Article number109728
JournalCorrosion Science
Volume191
DOIs
Publication statusPublished - Oct 2021
Externally publishedYes

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