Search academic texts

Information × Registration Number 0225U003484, (0124U004358) , R & D reports Title Development of the latest titanium implants for osteosynthesis with a surface modified with a magnesium alloy and nanoparticles of silver and copper popup.stage_title Отримання сплавів, нанесення магнієвих сплавів на відібрані види імплантатів та біологічно активного покриття; підбір середовищ, клінічних штампів, визначення методів формування біоплівки. Дослідження мікромеханічних властивостей, хімічного складу, морфології та структури отриманих покриттів; вибір та оптимізація методики для оцінки адгезійної міцності покриттів. Head Hornostai Oleksii V., Кандидат технічних наук Registration Date 02-07-2025 Organization E.O. Paton Electric Welding Institute (PWI) popup.description1 The goal of the project is to modify the surface of titanium implants for osteosynthesis with a magnesium-based alloy with the addition of silver and copper nanoparticles to improve bone regeneration, corrosion resistance, biocompatibility, and antibacterial properties of the implants. popup.description2  At the second stage of the work, coatings were formed on VT-6 titanium substrates using microplasma spraying of pure magnesium powders and a quaternary magnesium alloy of the Mg–Ca–Zn–Ga system, both obtained via plasma atomization. The morphology, structural characteristics, and elemental composition of the coatings were determined. The results confirmed the high density of the coatings, reduced oxidation, and uniform distribution of alloying elements compared to coatings made from chemically pure magnesium. Magnesium coatings were further modified with silver using electron beam evaporation in vacuum, followed by vapor deposition. By varying the exposure time of the vapor stream, nanostructured coatings with a controlled average silver particle size ranging from 18 to 69 nm were successfully produced. The structure of the coatings was analyzed using SEM and EDX methods. Micromechanical testing was conducted to determine the Young’s modulus, microhardness, and plasticity index. Specialized tooling for adhesion testing was developed and fabricated, and the testing methodology was substantiated in accordance with ISO 13179-1:2021 and ASTM C633–13 standards. Test media were selected for biofilm formation studies, and the methodology for evaluating the antimicrobial effectiveness of the functional coatings was adapted to assess activity against common resistant strains (Acinetobacter spp., Pseudomonas spp., Staphylococcus aureus). Product Description popup.authors Voinarovych Serhii H. Dyman Marianna M. Kaliuzhnyi Serhii M. Maksymchuk Ihor M Stelmakh Yaroslav A. Fomin Oleksandr O. Fomina Nadiia S. Khokhlov Maksym A. Khokhlova Yuliia A. popup.nrat_date 2025-07-02 Close