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In-Depth Characterization of Two Bioactive Coatings Obtained Using MAPLE on TiTaZrAg
Mariana Prodana1, Andrei Bogdan Stoian1, Daniela Ionita1
1Department of General Chemistry, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania.
Materials (Basel, Switzerland)
|June 27, 2024
Summary
Bioactive coatings containing chitosan, bioglass, zinc oxide, and graphene oxide were developed on TiZrTaAg alloy. These composite coatings significantly enhance the alloy
Area of Science:
- Biomaterials Science and Engineering
- Materials Science
- Surface Engineering
Background:
- Titanium alloys, such as TiZrTaAg, are widely used in medical implants due to their excellent mechanical properties.
- Enhancing the bioactivity and biocompatibility of metallic implant surfaces is crucial for improving osseointegration and reducing failure rates.
- Composite coatings offer a promising approach to impart desirable surface characteristics to metallic substrates.
Purpose of the Study:
- To develop and characterize two distinct bioactive composite coatings on a TiZrTaAg alloy substrate using the Matrix-Assisted Pulsed Laser Evaporation (MAPLE) technique.
- To investigate the influence of composite coatings (chitosan-bioglass with ZnO and GO) on the properties of the TiZrTaAg alloy.
- To evaluate the potential of these coated alloys for applications in scaffold materials and implantology.
Main Methods:
- Fabrication of composite coatings using the MAPLE technique.
- Characterization techniques included Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Ellipsometry, and Micro-Raman spectroscopy.
- Mechanical and electrochemical properties were assessed using Vickers hardness testing, Atomic Force Microscopy (AFM) for adhesion, and Electrochemical Impedance Spectroscopy (EIS) and polarization curves for corrosion resistance.
Main Results:
- Successful deposition of two types of composite coatings on the TiZrTaAg alloy.
- Comprehensive characterization confirmed the presence and composition of the coatings, revealing improved surface properties.
- Vickers hardness, film adhesion, and corrosion resistance were significantly enhanced by the composite coatings.
Conclusions:
- The developed composite coatings demonstrably improve the functional properties of the TiZrTaAg alloy.
- The enhanced properties suggest the coated TiZrTaAg alloy is a viable candidate for biomedical applications, particularly as scaffold materials or in implantology.
- MAPLE is an effective technique for creating advanced bioactive coatings on metallic implant materials.
