Počet záznamů: 1  

Hybrid coatings for orthopaedic implants formed by physical vapour deposition and microarc oxidation

  1. 1.
    0560431 - FGÚ 2023 RIV GB eng J - Článek v odborném periodiku
    Gabor, R. - Cvrček, L. - Doubková, Martina - Nehasil, V. - Hlinka, J. - Unucka, P. - Buřil, M. - Podepřelová, A. - Seidlerová, J. - Bačáková, Lucie
    Hybrid coatings for orthopaedic implants formed by physical vapour deposition and microarc oxidation.
    Materials and Design. Roč. 219, July (2022), č. článku 110811. ISSN 0264-1275. E-ISSN 1873-4197
    Grant CEP: GA ČR(CZ) GA20-01570S
    Institucionální podpora: RVO:67985823
    Klíčová slova: Ti-6Al-4V * PVD coating * MAO process * corrosion protection * tribology * mesenchymal stem cells
    Obor OECD: Biomaterials (as related to medical implants, devices, sensors)
    Impakt faktor: 9.417, rok: 2021
    Způsob publikování: Open access
    https://doi.org/10.1016/j.matdes.2022.110811

    This study is focused on the preparation of new hybrid layers intended for surface modification of Ti-6Al-4V alloys for potential orthopaedic and dental applications. Combination of the technology of physical vapour deposition (PVD) and subsequent micro-arc oxidation (MAO) was utilized for the deposition of Ti and ZrTi to form hybrid oxide layers. The oxide layers were prepared using an alkaline electrolyte with glycerol as an additive under micro-arc discharge conditions with different Si content on their surfaces. The hybrid ZrTi coatings with a Zr/Si structure achieved the best tribological properties described by a low friction coefficient of 0.3 and high abrasion resistance. There was also an increase in corrosion potential and polarization resistance of hybrid ZrTi coatings. Although the proliferation of human bone marrow mesenchymal stem cells was slower on these hydrophilic Ti and ZrTi coatings than both on uncoated Ti-6Al-4V and the reference tissue culture polystyrene dishes, both types of hybrid coating promoted greater osteogenic differentiation of these cells, indicated by approx. twice as high activity of alkaline phosphatase. The hybrid oxide layers newly developed in this study – especially the layers with Zr – are therefore promising for coating metallic bone implants.
    Trvalý link: https://hdl.handle.net/11104/0333357

     
     
Počet záznamů: 1