Incorporation of Zn/Sr-Ga based LDH particles into Si-HAp coatings to control the corrosion of Nitinol alloys

Samiee R, Duran A, Castro Y, Galusek D, Boccaccini AR, Pakseresht A (2025)

Publication Type: Journal article

Publication year: 2025

Journal

Open Ceramics Elsevier

Book Volume: 24

Article Number: 100852

DOI: 10.1016/j.oceram.2025.100852

Abstract

Metallic implants, especially Nitinol, have numerous biomedical applications; however, they have inherent drawbacks, such as poor corrosion and wear resistance and suffer from nickel ion leaching. To address these challenges, this paper explores the use of silicon-substituted hydroxyapatite (Si-HAp) coatings with incorporated Zn/Sr-Ga based Layered Double Hydroxide (LDH) particles deposited by electrophoretic deposition (EPD). The synthesized Zn/Sr-Ga based LDH particles were investigated as both passive and active fillers in Si-HAp coatings. An anodization pre-treatment of the Nitinol substrates was performed to improve adhesion between the substrate and the coating. The EPD parameters were also optimized to prepare homogeneous and stable Si-HAp coatings loaded with Zn/Sr-Ga LDH particles. The morphology, composition, and electrochemical properties of the Si-HAp composite coatings were characterized using different techniques. Electrochemical impedance spectroscopy (EIS) and polarization studies demonstrated a significant improvement of the corrosion resistance properties of Si-HAp coatings with Zn/Sr-Ga LDH particles, compared to pure Si-HAp coatings and Nitinol substrate. The LDH@Si-HAp-coated sample showed the lowest nickel release, indicating the potential of LDH to reduce toxicity and enhance the strength of Nitinol implants.

Authors with CRIS profile

Aldo Boccaccini Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)

Involved external institutions

Trenčianska univerzita Alexandra Dubčeka v Trenčíne

Slovakia (SK) Institute of Ceramics and Glass (ICV) / Instituto de Cerámica y Vidrio

Spain (ES)

How to cite

APA:

Samiee, R., Duran, A., Castro, Y., Galusek, D., Boccaccini, A.R., & Pakseresht, A. (2025). Incorporation of Zn/Sr-Ga based LDH particles into Si-HAp coatings to control the corrosion of Nitinol alloys. Open Ceramics, 24. https://doi.org/10.1016/j.oceram.2025.100852

MLA:

Samiee, Reza, et al. "Incorporation of Zn/Sr-Ga based LDH particles into Si-HAp coatings to control the corrosion of Nitinol alloys." Open Ceramics 24 (2025).

BibTeX: Download