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

Author Identifier (ORCID)

Hongqi Sun

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

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.

Document Type

Journal Article

Date of Publication

2021

Volume

189

Publication Title

Corrosion Science

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

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Link to publisher version (DOI)

10.1016/j.corsci.2021.109609