Corrosion behavior and mechanism of selective laser melted Ti35Nb alloy produced using pre-alloyed and mixed powder in Hank's solution

Author Identifier

Hongqi Sun

ORCID : https://orcid.org/0000-0003-0907-5626

Document Type

Journal Article

Publication Title

Corrosion Science

Volume

189

Publisher

Elsevier

School

School of Engineering

RAS ID

35939

Funders

Edith Cowan University Funding information : https://doi.org/10.1016/j.corsci.2021.109609

Comments

Qin, P., Chen, L. Y., Zhao, C. H., Liu, Y. J., Cao, C. D., Sun, H., & Zhang, L. C. (2021). Corrosion behavior and mechanism of selective laser melted Ti35Nb alloy produced using pre-alloyed and mixed powder in Hank’s solution. Corrosion Science, 189, article 109609. https://doi.org/10.1016/j.corsci.2021.109609

Abstract

This work investigated the corrosion behavior and mechanism of selective laser melted (SLM) Ti35Nb separately using mixed powder (Ti35Nb-M) and pre-alloyed powder (Ti35Nb-P) in Hank's solution. Both types of samples demonstrate similar corrosion behavior, and double-layered oxide films form on the TiNb regions in both Ti35Nb-M and Ti35Nb-P. However, Ti35Nb-P has more stable oxide films than Ti35Nb-M because the outer porous oxide layer formed on Ti35Nb-P has smaller thickness and less defects according to Mott-Schottky analysis. Distinct oxide films also form on the TiNb and Nb regions in Ti35Nb-M due to unmelted Nb particles.

DOI

10.1016/j.corsci.2021.109609

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