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Description:

Metals that are used to reconstruct skeletal structures often interfere with MRI owing to differences in magnetic susceptibility; consequently, metals with lower magnetic susceptibilities need to be developed for use in implant devices. Herein, we investigated the corrosion properties of the Zr-14Nb-5Ta-1Mo alloy, which exhibits low magnetic susceptibility and excellent mechanical properties. The pitting potential of Zr-14Nb-5Ta-1Mo was higher than that of pure Zr. The passive current density of Zr-14Nb-5Ta-1Mo also higher than that of pure Zr, which is ascribable to slow reconstruction of the initial passive film associated with the presence of Nb and Ta. XPS revealed that the passive film is enriched with Nb and Ta. Therefore, while the Zr-14Nb-5Ta-1Mo alloy exhibited a high initial passive current density in simulated body fluid, it formed a stable passive film that suppressed localized corrosion. Zr-14Nb-5Ta-1Mo is therefore a prospective implant-material alloy candidate.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: Zirconium alloy, Corrosion resistance, Passive film

Date published: 2024-11-25

Publisher: Japanese Society for Dental Materials and Devices

Journal:

• Dental Materials Journal (ISSN: 02874547) vol. 43 issue. 6 2024-158

Funding:

• JSPS 15H03018
• JSPS 19H04464
• Institute of Light Metals (ILM) Joint Usage/Research Grant

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.4012/dmj.2024-158

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Updated at: 2024-12-18 16:30:49 +0900

Published on MDR: 2024-12-18 16:30:49 +0900