Additive manufacturing

Additive manufacturing

Formation of personalized implants with an individual form for each patient is a new step in the development of biomedicine. The ability to model implants of any shape and size, the functionality of the components and properties, price ratio in the production of single or small series of products, all of these advantages belong additive technology (AT), or more commonly known as the technology of 3-D printing.

In our work, we use a method of electron-beam melting which is one of the most advanced among the three-dimensional printing technology. It includes the distribution of the working material layer-by-layer and its melting under the influence of the electron beam. Metal implants prepared in this way can also successfully “to repeat” complex microstructure of bone, which improves the integration process of the implant and its long-term stability in the body.

In this case titanium alloy, Ti6Al4V powder is working material for electron beam melting because it is widely used in biomedicine for hard tissue replacement of dysfunctional due to high strength, light weight, good biocompatibility and corrosion resistance. However, we aim to create an even more improved biocompatibility of the surface by deposition of bioactive calcium phosphate coatings and antimicrobial silver nanoparticles. These modification methods already have proved themselves in the field of plasma technology and colloid chemistry.

To date, we carry out experimental and theoretical studies of the properties of the modified surfaces, including research of the wettability mechanisms biocomposites, the influence of the porosity and chemical composition of the surface on hysteresis, surface energy, the impact of the structure, chemical, phase composition and roughness parameters on the physical and mechanical properties (micro-hardness, Young's modulus) of the biocomposites.