Projects

International

NewTechAl – Nové technológie pri výrobe hliníka – Fyzikálno-chemické a elektrochemické skúmanie sľubných draselných kryolitových sústav
New technology in Aluminium production – Physicochemical and electrochemical investigation of promising potassium cryolite molten systems
Program: Bilateral – other
Project leader: Ing. Kubíková Blanka PhD.
Annotation: Submitted project deals with the physico-chemical and electrochemical analysis of KF-AlF3 electrolytes with low melting temperatures considered as electrolytes of a new generation for aluminium production process with application of “wetted” cathodes. The behavior of the KF electrolytes when melting as well as solubility of the alumina in these systems will be analysed with the aim to obtain detailed description of the processes running at aluminium production. The experiments will be supplemented by current efficiency experiments.
Duration: 1.1.2016 – 31.12.2017
Building-up Centre of Excellence for advanced materials application — CEMEA
Building-up Centre of Excellence for advanced materials application — CEMEA
Program: Horizon 2020
Project leader: doc. Ing. Boča Miroslav DrSc.
Annotation: CEMEA project´s main objective in the long run is to establish a joint Centre of Excellence foradvanced materials application (CEMEA) based on long-term strategic cooperation betweenVTT Technical Research Centre of Finland and University of Helsinki (Finland) on the one handand Slovak Academy of Sciences (Slovak) on the other. The rationale behind this project is toensure sustainable financing and quality of research in the field of advanced materials in Slovakiaas one of Key Enabling Technologies (KETs). Our goal is to bring and nurture the culture ofexcellence in Slovakia and to leverage support under HORIZON 2020 and other available fundingopportunities. CEMEA project aligns with Smart Specialization Strategy of the Slovak Republic byfocusing on areas of specialisation based on best available scientific and research capacities(identified in RIS3) – in particular on research of advanced materials and nanotechnology,biomedicine, biotechnology and sustainable energy as application areas for advanced materials.Results of the new CEMEA Centre´s research will be applicable in areas of economic specialisationidentified in RIS3 of the Slovak Republic (Automotive and mechanical engineering industries,Consumer electronics and electrical equipment, ICT and Services).
Duration: 1.6.2015 – 30.6.2016
IPROX – Potenciálny vplyv draslíka a rubídia na prípravu oxyfluorohlinitanových komplexov v tuhom stave
Potential influence of potassium and rubidium on the formation of oxofluoroaluminates in solid state
Program: Bilateral – other
Project leader: Ing. Šimko František PhD.
Annotation: The proposed project is focused on the study and investigation of MF-AlF3-Al2O3 moltensystems (M = K and Rb), theirs ionic composition and chemical behaviour. These electrolytesare considered as electrolytes of a new generation for aluminium production process. The similarinvestigation and discussion about the structure of electroactive species in standard usedsodium electrolytes (NaF-AlF3-Al2O3) is running more than 70 years up to now, and it is still notfinished. This indicates possible complexity of the matter to get full insight to the structure ofelectrolyte and the behavior of its electroactive species. Such an investigation, to our knowledge,was not yet successfully done. The utilization of new high resolution spectral technique like NMRspectroscopy could bring new insight and substantial progress to the matter.
Duration: 1.1.2014 – 31.12.2015
SolarGradeSilico – Fyzikálno-chemická analýza fluoridových taveninových systémov pre elektrolytické vylučovanie kremíka pre fotovoltaické aplikácie
Physico-chemical analysis of molten fluoride systems for electrowining of solar grade silicon
Program: Bilateral – other
Project leader: Ing. Korenko Michal PhD.
Annotation: High price of solar grade silicon caused by limited supply has become the bottlenecks of thephotovoltaic industry to achieve its much anticipated growth. It is thus essential to develop amethod for synthesis of solar silicon which is energy efficient and will deliver inexpensive feedstock material. As a promising approach, the electrodeposition of silicon from fluoride based electrolytes at relatively low temperature (1000°C), similar method to Hall–Héroult process for Al productionhas been investigated by different researchers. In spite of lots of this, the electro deposition ofsilicon production has not been commercialized yet. One of the main barriers is the lack ofinformation on physiochemical and thermodynamic properties of the electrolytes.Proposed project deals with a study (physico-chemical properties, spectral analysis andthermodynamic) of different silica – fluoride systems (mainly cryolite based). The project is primaryaimed to physico-chemical investigation of different molten fluoride systems (density, viscosity,electrical conductivity and vapor pressure). Another part of the project is a preparation and studyof solidified melts (whether spontaneously or rapidly cooled by RSP technique). The solid samples will be analyzed by different spectral techniques like XRD, IR and Raman spectroscopy and SEMEDX.
Duration: 1.6.2013 – 31.12.2014
SATAPO – Super tvrdé a tepelne odolné jemné prášky a povlaky boridov nióbu a tantalu: príprava, vlastnosti, použitie
Superhard and heat-resistant fine powders and coatings of niobium and tantalum borides: obtaining, properties, application
Program: Bilateral – other
Project leader: doc. Ing. Boča Miroslav DrSc.
Annotation: The aim of the project is the investigation of high-temperature electrochemical synthesis of niobium and tantalum borides in the form of fine superhard heat-resistance powders from ionic melts depending on temperature, cathodic current density and duration of process, and also relations of these parameters with deposition rate, physico-chemical properties of deposits will be investigated. Synthesis realizes as result of refractory metal and boron electro reduction reactions and interaction between this metal and boron on cathode with the forming of borides. Electrochemical deposition consists in electrolysis oj niobium, boron and tantalum compounds at temperature 750-850oC and cathodic current density of 1.0-1.8 A/m2 and voltage 1.5-4.5 V.
Duration: 4.1.2010 – 31.12.2011

National

Fluoridové taveninové systémy s potenciálom využitia v elektrochemickej výrobe hliníka
Fluoride melts with potential applications in electrochemical aluminum production
Program: VEGA
Project leader: Ing. Šimko František PhD.
Annotation: Predkladaný projekt je zameraný na fázovú a štruktúrnu analýzu systémov MF-AlF3 (M = Na, K a Rb) sprídavkom Al2O3, s potenciálom využitia pri elektrochemickej výrobe hliníka. Ide o tzv. nízko teplotné elektrolyty,ktorých výskum v poslednej dobe vzrástol s vývojom tzv. „inertných“ elektród, aplikovateľných do procesuvýroby. Cieľom projektu bude definovať fázové zloženie systémov a identifikovať jednotlivé zložky. Tie budúpodrobené štúdiu tepelnej stability, spektrálnej a difrakčnej charakterizácii s cieľom zistiť závislosť medzištruktúrnymi parametrami (ako napr. polomerov M+ alebo spôsobu usporiadania polyédrov v štruktúre) avlastnosťami študovaných zložiek (napr. počtom a charakterom fázových prechodov). Využije samultidisciplinárny prístup, ktorý bude zahrňovať použitie difrakčných a spektrálnych metód priamo in-situ vroztavenom stave, v spojení s ex-post analýzou zatuhnutých vzoriek.
Duration: 1.1.2018 – 31.12.2021
FLUMECE – Fluoridové taveniny kritických prvkov pre nekonvenčné aplikácie
Fluoride melts of critical elements for unconventional applications
Program: SRDA
Project leader: doc. Ing. Boča Miroslav DrSc.
Duration: 1.7.2016 – 30.6.2020
BENECOM – Vlastnosti nových progresívnych konštrukčných materiálov v agresívnom prostredí roztavených solí
The behaviour of new progressive construction materials in aggressive environment of molten salts
Program: SRDA
Project leader: Ing. Šimko František PhD.
Duration: 1.7.2016 – 30.6.2020
SERAMAT – Zhodnotenie druhotných surovín pre materiály s využitím v extrémnych podmienkach
Assessment of secondary raw materials for the preparation of materials used in extreme conditions
Program: SRDA
Project leader: doc. Ing. Hnatko Miroslav PhD.
Duration: 1.7.2016 – 30.6.2020
Roztavené fluoridové systémy s vyššou funkcionalitou
Molten fluoride systems with higher functionality
Program: VEGA
Project leader: doc. Ing. Boča Miroslav DrSc.
Duration: 1.1.2016 – 31.12.2019
HITEMPCORR – Vlastnosti materiálov po vysokoteplotných koróziách v roztopených soliach
High-temperature properties of materials corrosion in molten salts
Program: SASPRO
Project leader: doc. Ing. Boča Miroslav DrSc.
Annotation: Study of the corrosion characteristics of the structural materials for handling hightemperature molten salts is still of serious concern and importance. Even today theliterature lack corrosion characterizations for molten salt systems studied above 850°C.Furthermore, the amount of materials tested and the variety of molten salts used, is alsovery limited. Our desire in this study is to test a spectrum of various alloys at around800°C and more, in variety of molten salts environment. Looking at these needs, webelieve that corrosion testing should include as many materials as possible that have beenqualified by ASTM codes for use at the high temperatures envisioned. And therefore, weplan to investigate several high temperature alloys: nickel-based alloys HA230 and In625,Hastelloy-N, Hastelloy-X, Hastelloy-C276, Haynes-230, Haynes-242, Inconel-617, Inconel-713C, Incoloy-800H, Udiment-720 and SiC-SiC composite in fluoride salts (FLiNaK),magnesium chloride salts (MgCl2-KCl), and nitrate salts (NaNO3-KNO3 [40–60 wt%],LiNO3-NaNO3-KNO3 [30–52–18 wt%]) at a high temperature range depending on themolten salt mixture. Our main objective is to understand corrosion rates of these alloysand materials exposed to the given salts for long durations (i.e., 100–1,000 hours) in astatic system and semi-empirical predictions of the thermal-physical properties of thesalts.
Duration: 5.11.2015 – 4.11.2018
Elektrolyty s nízkou teplotou topenia a zmáčané katódy s potenciálom pre zlepšenie procesu výroby hliníka
Low melting electrolytes and wetted cathodes with potential for electrolytic aluminium production
Program: VEGA
Project leader: Ing. Šimko František PhD.
Annotation: The project is focused on the study and investigation of low-melting KF electrolytes, theirs structure and physico-chemical behaviour. These electrolytes with lower melting points are considered as electrolytes of a new generation for aluminium production process with application of “wetted” cathodes, as they could reduce an energy consumption of the process. The project also includes the corrosion investigation of possible catthode materials (TiB2, ZrB2 and SiC) in studied fluoride melts. The use of a variety of spectral techniques, in addition to the measurement of physico-chemical properties, enables us to find the links between the structure of molten systems (their internal environment in molten state) and theirs physic-chemical behavior, which in turn allows more qualified prediction and modeling of aluminium industrial applications.
Duration: 1.1.2014 – 31.12.2017
Centrum aplikovaného výskumu nových materiálov a transferu technológií
Center for applied research of new materials and technology transfer
Program: EU Structural Funds Research & Development
Project leader: doc. Ing. Boča Miroslav DrSc.
Duration: 1.3.2013 – 31.12.2015
Roztavené fluoridové systémy pre vysokoteplotné aplikácie s potenciálom využitia v energetickom sektore
Molten fluoride systems for high temperature applications with potential in energy sector application
Program: VEGA
Project leader: doc. Ing. Boča Miroslav DrSc.
Annotation: The project is based on the complex study of physico-chemical (density, viscosity, surface tension) andthermodynamic properties (phase diagrams, thermochemical characteristics) and the study of “structure” offluoride systems considered for high temperature applications especially in nuclear industry. The investigatedsystems play important role in development of nuclear reactors of new generation. The influence of corrosionproducts of some construction materials on studied physico-chemical parameters is an important part of theproject, as well. The determination of the particular physico-chemical properties will be performed by suitable andavailable methods, e.g. thermal analysis method, hydrostatic weighting, maximal bubble pressure method, DCS,STA and high temperature drop calorimetry. Analysis of the corrosion products and the identification of thephases will be carried out by IR, XRD, WD XRF and by EDX analysis together with SEM method.
Duration: 1.1.2012 – 31.12.2015
Kompetenčné centrum pre nové materiály, pokročilé technológie a energetiku
Competence center for new materials, advanced technologies and energy
Program: EU Structural Funds Research & Development
Project leader: doc. Ing. Boča Miroslav DrSc.
Duration: 1.6.2011 – 30.12.2015
Univerzitný vedecký park STU Bratislava
University Science Park of STU Bratislava
Program: EU Structural Funds Research & Development
Project leader: doc. Ing. Boča Miroslav DrSc.
Duration: 1.2.2013 – 31.10.2015
ZrAlTa – Anorganické fluoridové taveniny – komplexné štúdium spektrálnych, difrakčných, fyzikálnochemických, termodynamických a štruktúrnych charakteristík
Inorganic fluoride melts – the complex study of spectral, diffraction, physicochemical, thermodynamical and structural characteristics
Program: SRDA
Project leader: doc. Ing. Boča Miroslav DrSc.
Annotation: Anotácia anglicky: Submitted project deals with the study of molten fluoride systems. According to the object of research they can be divided into three groups: melts based on aluminium, melts based on tantalum and niobium and the last group is formed by melts based on zirconium. Although the project represents a basic research, the interest in exactly these groups is connected with the application and usage of metals or systems in different areas of industry. The knowledge about the single systems are at different level, therefore the aim of the project is to clarify processes running in molten systems, to predict properties in more-component systems and in the case of not studied melts to obtain the information about their physicochemical properties. It will be done by obtaining spectral, diffraction, physicochemical, thermodynamic and structural characteristics. The knowledge of these characteristics, information about the material compatibilities, correlations of inner structure of melts with their physicochemical properties are crucial for any applications of high temperature molten systems.
Duration: 1.5.2011 – 31.10.2014
Aplikovaný výskum technológie plazmotermických procesov
Applied research of technology of thermal plasma processes
Program: EU Structural Funds Research & Development
Project leader: doc. Ing. Boča Miroslav DrSc.
Duration: 1.1.2011 – 31.12.2013
Fluoridové elektrolyty s nízkou teplotou topenia s potenciálom pre elektrolytickú výrobu hliníka
Low temperature melting fluoride systems with potential for electrolytic aluminium production
Program: VEGA
Project leader: Ing. Šimko František PhD.
Annotation: The submitted project deals with thermodynamic and physico-chemical and corrosive properties of low melting fluorides systems with variable ratio of NaF, KF and AlF3. These systems possess potential for electrolytic aluminium production. The project also includes the corrosion tests of industrially used construction materials (steel, special steel materials, advanced ceramics), and materials considering for inert anodes in that acid electrolytes. We would like to also study a corrosion processes in the systems, including identification of the corrosion products, their role in the contamination of electrolytes and an influence of that products on the physico-chemical properties of the electrolytes.
Duration: 1.1.2010 – 31.12.2013
SPFTVTA – Štúdium potenciálu fluoridových tavenín pre vysokoteplotné aplikácie
A study of the potential of fluoride molten salts for high temperature applications
Program: SRDA
Project leader: doc. Ing. Boča Miroslav DrSc.
Annotation: The proposed project will be focused on measurements of thermodynamic and physico-chemical properties (phase diagram, density, viscosity, surface tension) of FLiNaK-Na2ZrF6 system. this molten system belong s to the systems which are considered as a cooling media in primary and in secondary cooling circuit of high-temperature nuclear reactor, as well as a heat-transfer interface for thermochemical production of hydrogen. the project will be direct on the study of the destruction rate and degree of the construction materials, mostly special steels (Inconel, Hastelloy), as well as different types of progressive ceramics under contact with molten fluoride systems.
Duration: 1.9.2009 – 31.8.2013
MVFT – Moderné využitie fluoridových tavenín
Modern application of fluoride molten salts
Program: SRDA
Project leader: doc. Ing. Boča Miroslav DrSc.
Annotation: Submitted project is devoted to the investigation of basic physicochemical properties (phase equilibrium, density, viscosity, surface tension) of molten FLiNaK-K2ZrF6 system. Selected system belongs to such systems which have a potential utilization as cooling media in first and second cooling circuit of advanced high-temperature nuclear reactor, or as heat-transfer interface by thermochemical production of hydrogen. A part of the project deals with the study of corrosion of selected construction materials (special alloys, progressive ceramics) in touch with these molten fluoride systems.
Duration: 1.9.2009 – 31.8.2012
MACHINA II – Centrum pre materiály, vrstvy a systémy pre aplikácie a chemické procesy v extrémnych podmienkach – Etapa II
Centre for Materials, Layers and Systems for the Applications and Chemical Processes in the Extreme Environments – Stage II
Program: EU Structural Funds Research & Development
Project leader: doc. Ing. Boča Miroslav DrSc.
Duration: 1.4.2010 – 31.3.2012
Fluoridové taveniny pre vysokoteplotné aplikácie
Fluoride melts for high temperature applications
Program: VEGA
Project leader: doc. Ing. Boča Miroslav DrSc.
Duration: 1.1.2009 – 31.12.2011
MACHINA I – Centrum pre materiály, vrstvy a systémy pre aplikácie a chemické procesy v extrémnych podmienkach
Centre for Materials, Layers and Systems for the Applications and Chemical Processes in the Extreme Environments
Program: EU Structural Funds Research & Development
Project leader: doc. Ing. Boča Miroslav DrSc.
Duration: 14.5.2009 – 30.4.2011
Správanie sa nečistôt v priemyselných kyslých elektrolytoch na výrobu hliníka
The behaviour of impurities in industrial acid electrolytes for aluminium production
Program: VEGA
Project leader: Ing. Šimko František PhD.
Annotation: The submitted project deals with the study of the behavior of impurities in the electrolytes which are applied in industrial production of aluminium by the Hall-Héroult process. Emphasis is laid especially to iron, phosphorous and vanadium compounds. The objective of this project is the explanation of reactions between above mentioned impurities and electrolyte, using the thermodynamic calculation and the experimental verification. The electrolytes with the different excess of aluminium fluoride opposite the cryolite will be used. The results of this study will be supply and expand the knowledge about behavior of these impurities in real industrial electrolyte.
Duration: 1.1.2007 – 31.12.2009
Štúdium fluoridových taveninových sústav s poteciálom pre priemyselné využitie
The study of the fluoride molten-salts systems with the potential for industrial application
Program: VEGA
Project leader: doc. Ing. Boča Miroslav DrSc.
Annotation: The submitted project deals with the study of the properties and structure of the molten electrolytes used for electrolytic deposition of refractory metals and deals with the investigation of the molten systems suitable for nuclear industry as cooling medium in secondary circuit, as well. The submitted project deals with the question of implementation of some spectral techniques adopted for high temperatures, like NMR and IR spectroscopies. This is significant development of the way how to obtain information about the composition and properties of the investigated systems.
Duration: 1.1.2006 – 31.12.2008