Projects

International

Novel Ultra-High Temperature Ceramic Matrix Cpmposites for Application in Harsh Aerospace Environments
Novel Ultra-High Temperature Ceramic Matrix Cpmposites for Application in Harsh Aerospace Environments
Program:	JRP
Project leader:	Ing. Tatarko Peter, PhD.
Duration:	1.1.2024 – 31.12.2026

National

ComCer – Vývoj nových keramických materiálov komplexného zloženia pre extrémne aplikácie
Development of new compositionally-complex ceramics for extreme applications
Program:	SRDA
Project leader:	Ing. Tatarko Peter, PhD.
Annotation:	The main aim of the proposed project is to develop next generation ultra-high temperature ceramics capable of withstanding temperatures up to 3000°C for propulsion systems, rocket engines and other aerospace applications. This will be achieved by the synthesis of diboride ceramics with unique compositionally -complex structures, comprising of at least five metal elements. A systematic study will be conducted to generate new knowledge on the understanding of the effect of various molar ratios of individual metal cations in diboride structures on the stability, synthesis, sintering and mechanical properties of bulk diboride ceramics. The results will significantly contribute to the expansion of the high entropy ceramics concept with equimolar compositions towards the development of compositionally-complex ceramics with non-equimolar compositions. The project also proposes an innovative way of manufacturing ultra-high temperature ceramics, consisting of the development of ceramic composites based on the high-entropy and compositionally-complex diboride matrix, reinforced with the refractory additives. The output of the project will be new fundamental knowledge on the formation of disordered diboride structures, and their effect on mechanical properties of the materials at room, intermediate, and ultra-high temperatures.
Duration:	1.7.2022 – 30.6.2026

NanoBioFit – Nanoštrukturované, funkčne navrstvené a bio-inšpirované 3D iplantáty na báze titánu
Nanostructured, functionally graded, and bioinspired 3D Ti-based implants
Program:	SRDA
Project leader:	doc. Ing. Hnatko Miroslav, PhD.
Annotation:	In general, patient response to implants is strongly dependent on the host tissue ─ implant interface because processes such as healing, osteolysis, and infection take place specifically at this interface. Therefore, modification and tailoring of transplants surface properties are attractive methods to trigger and accelerate healing processes and to reduce the possibility of osteolysis and infection.The main goal of the project is oriented towards improving the adhesion of bio-coatings on titanium alloy surfaces and ensure the enhancement of bio-compatibility of the bio-inert implants. Therefore, the main goal will be divided into two interconnected parts.The first part will be devoted to electropolishing of titanium and titanium-based alloys. This electrochemical surface treatment is generally considered as one of the most efficient, convenient and adaptable technique for the improvement of the physical and mechanical surface properties of materials.The second part of the project will deal with the preparation of bio-compatible surface layer on Ti implants by:- the formation of TiO2 nanotube arrays by anodic oxidation of Ti-based alloy – electrophoretic deposition (EPD) of coatings based on bio-composites such as polymers doped with various bioactive glass prepared by glass melting or sol-gel process (with possible antibacterial and inflammatory effect).Introduction of the convenient surface treatment process together with highly bioactive coating materials on bioinert Ti-based 3D implants will allow us to provide personalized, well-fitting implants without the need of additional medical treatment. Significant enhancement of patient comfort together with the reduction of the medical costs will be the main benefits of the presented project.
Duration:	1.8.2021 – 30.6.2025