Nanotopographical design and corrosion resistance improvement of Ti40Zr10Cu36Pd14 glassy alloy using alkaline chemical treatment
Ti-based bulk metallic glasses (Ti-BMGs) are promising candidates for mini-invasive dental implant devices due to their unique properties. Among them, Ti 40 Zr 10 Cu 36 Pd 14 has received particular attention in the literature for its potential biocompatibility. However, its high copper content limits corrosion resistance by promoting localised corrosion (pitting or crevice). This study presents a rapid and straightforward surface modification technique known as chemical pseudo-dealloying to reduce copper content in the top surface layer, enriching palladium and enhancing corrosion resistance limiting pitting occurrence. Additionally, the selective etching of Cu creates nanoscale surface features that could be interesting for cell adhesion and differentiation. The Pd-rich nanoporous layer was thoroughly characterized by its topography, chemical composition, electrochemical behaviour, and biocompatibility. These findings pave the way for tailoring the topography and surface properties of metallic amorphous alloys for biomedical applications. • Ammonia-based dealloying creates Pd-rich nanoporous layers in Ti-BMGs. • Nanoscale features maintain fibroblast adhesion and hemocompatibility. • Treated surfaces prevent pitting corrosion in acidic and chloride environments.
Authors
- Yohan Douest (ORCID: https://orcid.org/0000-0001-8186-0229)
- Nicholas Blanchard (ORCID: https://orcid.org/0000-0001-8369-0251)
- Thierry Douillard (ORCID: https://orcid.org/0000-0001-7113-889X)
- Benoît Ter-Ovanessian (ORCID: https://orcid.org/0000-0002-1208-3689)
- Damien Fabrègue (ORCID: https://orcid.org/0000-0002-3048-7281)
- Paola Rizzi (ORCID: https://orcid.org/0000-0002-3977-2839)
- Kirti Tiwari (ORCID: https://orcid.org/0000-0002-8352-9289)
- Anders Palmquist (ORCID: https://orcid.org/0000-0002-6974-2577)
- Jules Galipaud (ORCID: https://orcid.org/0000-0002-9952-6162)
- Paula Milena Giraldo‐Osorno
- Nicolas Courtois (ORCID: https://orcid.org/0000-0002-7966-9940)
- Jérôme Chevalier
Institutions
- Université Claude Bernard Lyon 1 (FR)
- École Centrale de Lyon (FR)
- Centre National de la Recherche Scientifique (FR)
- Matériaux Ingénierie et Science (FR)
- Institut Lumière Matière (FR)
- Anthogyr (France) (FR)
- Institut National des Sciences Appliquées de Lyon (FR)
- University of Turin (IT)
- University of Gothenburg (SE)
Publication Details
- Journal
- Journal of Alloys and Compounds
- Published
- 2025-04-01
- DOI
- https://doi.org/10.1016/j.jallcom.2025.180150
- Citations
- 3
- Primary Topic
- High Entropy Alloys Studies
- Type
- article
- Field-Weighted Citation Impact
- 2.14
Funders
- Dipartimenti di Eccellenza
- Vetenskapsrådet
- Centre National de la Recherche Scientifique
- Horizon 2020 Framework Programme
- Direction Régionale de l'Alimentation, de l'Agriculture et de la Forêt de la région Auvergne-Rhône-Alpes
- H2020 Marie Skłodowska-Curie Actions