Biocompatibility and Corrosion of Microplasma-Sprayed Titanium and Tantalum Coatings versus Titanium Alloy
Alontseva D. Safarova Y. Voinarovych S. Obrosov A. Yamanoglu R. Khoshnaw F. Yavuz H.I. Nessipbekova A. Syzdykova A. Azamatov B. Khozhanov A. Weiß S.
February 2024Multidisciplinary Digital Publishing Institute (MDPI)
Coatings
2024#14Issue 2
This study investigates the in vitro biocompatibility, corrosion resistance, and adhesion strength of a gas abrasive-treated Ti6Al4V alloy, alongside microplasma-sprayed titanium and tantalum coatings. Employing a novel approach in selecting microplasma spray parameters, this study successfully engineers coatings with tailored porosity, roughness, and over 20% porosity with pore sizes up to 200 μm, aiming to enhance bone in-growth and implant integration. This study introduces an innovative methodology for quantifying surface roughness using laser electron microscopy and scanning electron microscopy, facilitating detailed morphological analysis of both the substrate and coatings. Extensive evaluations, including tests for in vitro biocompatibility, corrosion resistance, and adhesive strength, revealed that all three materials are biocompatible, with tantalum coatings exhibiting superior cell proliferation and osteogenic differentiation, as well as the highest corrosion resistance. Titanium coatings followed closely, demonstrating favorable osteogenic properties and enhanced roughness, which is crucial for cell behavior and attachment. These coatings also displayed superior tensile adhesive strengths (27.6 ± 0.9 MPa for Ti and 28.0 ± 4.9 MPa for Ta), surpassing the ISO 13179-1 standard and indicating a robust bond with the substrate. Our findings offer significant advancements in biomaterials for medical implants, introducing microplasma spraying as a versatile tool for customizing implant coatings, particularly emphasizing the superior performance of tantalum coatings in terms of biocompatibility, osteogenic potential, and corrosion resistance. This suggests that tantalum coatings are a promising alternative for enhancing the performance of metal implants, especially in applications demanding high biocompatibility and corrosion resistance.
biocompatible coatings , coating techniques , corrosion resistance , in vitro test , medical implants , microplasma spraying (MPS)
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Laboratory of Bioengineering and Regenerative Medicine, National Laboratory Astana, Nazarbayev University, Astana, 010000, Kazakhstan
School of Digital Technologies and Artificial Intelligence, D. Serikbayev East Kazakhstan Technical University, Ust-Kamenogorsk, 070010, Kazakhstan
E.O. Paton Electric Welding Institute of NAS of Ukraine, 11 Kazymyr Malevich Street, Kyiv, 03150, Ukraine
Department of Physical Metallurgy and Materials Technology, Brandenburg Technical University, Cottbus, 03046, Germany
Department of Metallurgical and Materials Engineering, College of Engineering, Kocaeli University, Kocaeli, 41380, Turkey
School of Engineering and Sustainable Development, De Montfort University, Leicester, LE1 9BH, United Kingdom
Laboratory of Bioengineering and Regenerative Medicine
School of Digital Technologies and Artificial Intelligence
E.O. Paton Electric Welding Institute of NAS of Ukraine
Department of Physical Metallurgy and Materials Technology
Department of Metallurgical and Materials Engineering
School of Engineering and Sustainable Development
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