Projects

National

Termodynamické modelovanie ternárneho systému B-Nb-Ta
Thermodynamic modeling of B-Nb-Ta ternary system
Program: VEGA
Project leader: RNDr. Homolová Viera, PhD.
Annotation: The project focuses on the study of phases, phase equilibria and thermodynamic properties of the ternary B-Nb-Ta system suitable as part of materials for high-temperature and ultra-high-temperature applications in the aerospace industry and in nuclear energy. The aim is to obtain knowledge about the existence of phases, their chemical composition, structure and phase equilibria in a given system using experimental methods of differential thermal analysis, X-ray diffraction and electron microscopy, and subsequently by the semi-empirical methodCalphad to develop a database of thermodynamic parameters and model phase diagram and thermodynamicproperties of the system. The results of the project will allow extending the possibility of designing new materialsfor high-temperature use by computational methods without the need for time-consuming experimental testing.
Duration: 1.1.2024 – 31.12.2026
Výskum odolnosti a prevencie moderných konštrukčných materiálov voči vodíkovému krehnutiu
Research of the resistance and prevention of modern structural materials against hydrogen embrittlement
Program: VEGA
Project leader: Ing. Falat Ladislav, PhD.
Annotation: The aim of the project is to investigate the susceptibility to hydrogen embrittlement (HE) of structural metallicmaterials based on Fe (i.e. modern grades of carbon and alloy steels) as well as selected alloys or compositesbased on non-ferrous metals (e.g. Al, Cu, Mg, etc.) by the method of electrochemical hydrogen charging andmechanical testing in laboratory conditions. The microstructural conditionality of hydrogen embrittlement will be investigated on defined material states with characteristic microstructural parameters (grain size, phase composition, etc.). The possibilities of HE prevention will be investigated using available methods of surface modification (layers and coatings, surface alloying, formation of gradient structures, etc.) of basic materials inorder to apply a barrier effect against hydrogen permeability.
Duration: 1.1.2022 – 31.12.2025