Institute of Inorganic Chemistry, Slovak Academy of Sciences
International projects
| Alternative Werkstoffe fur Pumpenkomponenten |
| Alternatívne materiály a zariadenia pre komponenty do púmp |
| Program: |
Bilaterálne - iné |
| Project leader: |
doc. RNDr. Drábik Milan CSc. |
| Duration: |
1.2.2011 - 31.12.2013 |
| Ceramic Nanocomposites for Applications in Extreme Environments |
| Keramické nanokompozity pre aplikácie v extrémnych prostrediach |
| Program: |
Bilaterálne - iné |
| Project leader: |
prof. RNDr. Šajgalík Pavol DrSc. |
| Annotation: | Novel Hafnium Nitride- and Hafnium Diboride-Based Ceramic Nanocomposites – Preparation and High-Temperature Behaviour in Harsh Environments. |
| Duration: |
1.1.2012 - 31.12.2013 |
| RelMag - Quantum-chemical calculations of magnetic properties of various chemical compounds with inclusion of relativistic effects |
| Kvantovo-chemické výpočty magnetických vlastností rôznych chemických zlúčenín so zahrnutím relativistických efektov |
| Program: |
Medzivládna dohoda |
| Project leader: |
Dr. Malkin Vladimír DrSc. |
| Duration: |
1.1.2012 - 31.12.2013 |
| FUNEA - Functional nitrides for energy applications |
| Nitridové materiály s funkčnými vlastnosťami pre aplikácie v energetike |
| Program: |
7RP |
| Project leader: |
prof. RNDr. Šajgalík Pavol DrSc. |
| Annotation: | The core concept of the FUNEA is the training-through-research within the framework of individual research sub-projects with clearly defined training topics and career development goals set in personal Career Development Plans (CDPs). The FUNEA specifies the training topics, which are topics of the PhD thesis (for ESRs) or postdoctoral studies (for ERs), in the research sub-programmes. The latter have been interlinked thought common applications areas, same material classes as well as similar methodologies. Research objectives of sub-project is based on the syntheses, manipulation, characterization, understanding and modelling of 1) perovskite nitrides and oxonitrides with piezoelectric properties, 2) nitride-based ceramic membranes with high thermal and chemical stability for the high-temperature hydrogen purification, 3) ternary nitrides and SiAlON-based light emitting phosphors for LEDs, 4) new BN-based materials for hydrogen storage, 5) silicon nitride-based (i.e. Si(O,C)N, Si3N4, SiAlON) porous ceramic components with high thermal and chemical stability for the filtering of gas containing particulate or chemicals (odours, moisture, pollutants),
6) nitride-based macro-porous ceramic substrates as supports for gas separation membranes, 7) N-doped Si-C-N-O mixed anion systems for electro/optical gas sensors for harsh environments.
|
| Duration: |
1.1.2011 - 31.12.2014 |
| Pushing the envelope of nuclear magnetic resonance spectroscopy for paramagnetic systems. A combined experimental a theoretical approach (pNMR) |
| Pokrok vo vývoji a aplikáciách balíka NMR spektroskopie pre paramagnetické systémy. Kominovaný experimentálno-teoretický prístup (pNMR) |
| Program: |
7RP |
| Project leader: |
Dr. Malkin Vladimír DrSc. |
| Duration: |
1.1.2013 - 31.12.2016 |
| TERMOSK - Thermodynamic models and structure of multi-component glasses |
| Termodynamické modely a štruktúra viaczložkových skiel |
| Program: |
Medzivládna dohoda |
| Project leader: |
Ing. Chromčíková Mária PhD. |
| Duration: |
1.1.2012 - 31.12.2013 |
National projects
| ZrAlTa - Inorganic fluoride melts - the complex study of spectral, diffraction, physicochemical, thermodynamical and structural characteristics |
| Anorganické fluoridové taveniny - komplexné štúdium spektrálnych, difrakčných, fyzikálnochemických, termodynamických a štruktúrnych charakteristík |
| Program: |
APVV |
| Project leader: |
doc. Ing. Boča Miroslav PhD. |
| 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 - 30.4.2014 |
| Applied Research of Technology of Plasma-thermical processes |
| Aplikovaný výskum technológie plazmotermických procesov |
| Program: |
Štrukturálne fondy EÚ Výskum a vývoj |
| Project leader: |
doc. Ing. Boča Miroslav PhD. |
| Duration: |
1.1.2011 - 31.12.2013 |
| FUN-MAT - Center of Excellence for Functionalized Multiphase Materials |
| Centrum excelentnosti pre funkcionalizované viacfázové materiály |
| Program: |
Centrá excelentnosti SAV |
| Project leader: |
prof. RNDr. Šajgalík Pavol DrSc. |
| Duration: |
1.8.2011 - 31.12.2014 |
| Center of Excellence for Ceramics, glass and silicate materials |
| Centrum excelentnosti pre keramiku, sklo a silikátové materiály |
| Program: |
Štrukturálne fondy EÚ Výskum a vývoj |
| Project leader: |
doc. Ing. Galusek Dušan PhD. |
| Duration: |
1.6.2010 - 31.5.2013 |
| Low temperature melting fluoride systems with potential for electrolytic aluminium production |
| Fluoridové elektrolyty s nízkou teplotou topenia s potenciálom pre elektrolytickú výrobu hliníka |
| 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 |
| HybridMater - Photoactive hybrid nanomaterials with luminescent and antimicrobial properties. |
| Fotoaktívne hybridné nanomateriály s luminiscenčnými a antimikrobiálnymi vlastnosťami. |
| Program: |
APVV |
| Project leader: |
RNDr. Bujdák Juraj DrSc. |
| Annotation: | The topic of the project aims at hybrid materials composed from the particles of nanoscale dimensions of layered silicates with embedded organic dye molécules. Suitable sélection of the components, reaction procédures and conditions, structural and chemical modification will be applied to optimize the photoactivity of the materials. Two main types ofproperties of the materials will be investigated: 1. Optical properties, mainly luminiscence. 2. Photosensitization, molecular oxygen activation and antimicrobial properties. Solid state luminiscent materials with high émission efficiency will be developed. Biological tests will employ simple microbiological models, adhésion experiments on solid surfaces and biofilm model. For thèse experiments, représentatives of pathogenic bacteria and yeasts will be selected. Based on the results of simple type materials, more complex Systems, e.g. nanocomposites with polymers, will be developed and characterized. |
| Duration: |
1.7.2012 - 31.12.2015 |
| Hybrid materials based on layered silicates with cyanine and porphyrine dyes |
| Hybridné materiály vrstevnatých kremičitanov s kyanínovými a porfyrínovými farbivami |
| Program: |
VEGA |
| Project leader: |
Mgr. Czímerová Adriana PhD. |
| Annotation: | The submitted project is aimed to the study of the preparation and characterization of hybrid materials based on layered silicates with adsorbed cyanine and porphyrin dyes. One of the main objectives is the study of fluorescent J-aggregates of dye molecules adsorbed on the colloidal particles of the silicates, as well as the preparation of thin films of the hybrid systems. In this project we would like to focus on the preparation of the hybrid systems with unique photophysical properties, such as optical anisotropy, high quantum yield of fluorescence, chemical stability, sensing properties, photosensitization. The crucial problem to be solved is the elimination of H-aggregates formation, which are known to be the efficient quenchers of fluorescence. H-aggregates can be eliminated using suitable reaction conditions of the preparation of hybrid systems. A considerable part of the
project will be devoted to the study of controlled energy transfer between organic dye molecules.
|
| Duration: |
1.1.2013 - 31.12.2016 |
| The added value of chemistry for the knowledge and development of i) novel autoclavel aerated concrete and ii) macrodefectfree (MDF) materials. |
| Chémia ako „pridaná hodnota“ v poznávaní a vývoji i) pórobetónov novej generácie a ii) materiálov bez makrodefektov (MDF materiálov). |
| Program: |
VEGA |
| Project leader: |
doc. RNDr. Drábik Milan CSc. |
| Duration: |
1.1.2011 - 31.12.2013 |
| Alumina based ceramic composites with functional properties |
| Keramické kompozity na báza korundu s funkčnými vlastnosťami |
| Program: |
VEGA |
| Project leader: |
Ing. Sedláček Jaroslav PhD. |
| Annotation: | The project focuses on the preparation of ceramic composites based on alumina with particles which increase functional properties, such as electrical conductivity, thermal conductivity and thermal shock resistance. Addition of these particles will be studied with respect to maintenance or in better way improvement of mechanical properties. Silicon carbide, amorphous carbon, graphite as well as carbon nanotubes (CNT) will be used in this study. Amorphous carbon and graphite will be used as low cost source within the process of optimization of preparation. Optimization of whole process of preparation can lead to the development of new type of materials with functional properties. This can lead to novel application potential of alumina ceramics in areas of industry with sudden temperature changes, in areas that require materials with high chemical stability and electrical conductivity, thermal conductivity, e.g. chemical industry, power engineering etc. The results may also widen information on alumina composites with respect to the functional properties. |
| Duration: |
1.1.2013 - 31.12.2016 |
| KORSEM - Correspondence seminars from chemistry and biology for secondary schools and seminar of natural sciences for elementary schools |
| Korešpondenčné semináre z chémie a biológie pre stredné školy a seminár z prírodných vied pre základné školy |
| Program: |
APVV |
| Project leader: |
Mgr. Kedžuch Stanislav PhD. |
| Annotation: | Due to the absence of qualified specialists on the employment market it is important to motivate young people to study the natural sciences. Thus, the proposed project of correspondence seminars brings one of the possibilities to enable it. This project contains 3 knowledge competitions organized in the national rank for students of elementary and secondary schools, realised as follows:
Composite authors will prepare interesting set of problems focused on attractive and dynamically scientific development of fields in biology and chemistry for secondary schools or natural sciences for elementary schools. The solving of problems is based on creativity and logic. The set of the problems of competition and the methodical directions are distributed to all Slovak secondary and primary schools. Generally, will be organized 3 rounds per year for each of the 3 competitions. The students will send the solved problems to the co-ordinator by post or via internet. Authors will correct an evaluate them. In the last step will be done the order of the students, based on reached points. The first 25 of the best students from each competition will be invited to specialized training containing lectures, laboratory practice and field-work to introduce the latest knowledge and tendency in the corresponding field, as well as, the possibilities of study and later the implementation on the market with scientific education.
|
| Duration: |
1.9.2009 - 31.8.2013 |
| Luminescence of lanthanoid-doped silicon-based ternary nitrides and oxynitrides |
| Luminiscenčné vlastnosti ternárnych nitridov a oxynitridov kremíka dopovaných lantanoidmi |
| Program: |
VEGA |
| Project leader: |
doc. Ing. Lenčéš Zoltán PhD. |
| Annotation: | The project is focused on the cost effective preparation of ternary nitride and oxynitride (SiAlON) light emitting phosphors by reaction synthesis, combustion synthesis and carbothermal reduction and nitridation process. The host lattices for ternary nitride phosphors are MgSiN2 and LaSi3N5, while that for oxynitrides these are alfa- or beta-SiAlONs. The main starting powders for ternary nitrides are metal silicides and Si3N4, while for SiAlONs purified clay minerals. The type and amount of lanthanoid ions (Eu, Ce, Yb) that activate luminescence is selected on the base of the first principle calculations (DFT), carried out on the refined structure of ternary nitrides and beta-SiAlON. Because the emission depends also on the valence of activator (Eu2+ or Eu3+), the influence of processing conditions, e.g. temperature, reducing atmosphere, on the resulting valence of lanthanoid ion is studied in more details. Finally, the excitation and emission spectra of prepared nitirde-based phosphors are characterized. |
| Duration: |
1.1.2010 - 31.12.2013 |
| KoroDENT - Mechanisms of corrosion and micromechanical properties of dental materials |
| Mechanizmy korózie a mikromechanické vlastnosti dentálnych materiálov |
| Program: |
APVV |
| Project leader: |
doc. Ing. Galusek Dušan PhD. |
| Annotation: | The changes of lifestyle and increased consumption of drinks with high content of organic acids cause higher incidence of corrosion defects of natural teeth and dental materials, especially in younger population. The result is increased curiosity and mechanical wear (abfraction, abrasion, attrition) due to tooth enamel decalcification of natural teeth, and corrosion damage of the surface of dental materials and their premature mechanical failure. The project is focused at the testing of corrosion resistance of natural teeth in-vitro, and of selected materials used for dental replacements (porcelain, glass-ceramics, ceramics), carries fillings of natural teeth (amalgam, composite) against commonly consumed acid drinks, and determination of mechanisms and kinetics of corrosion. Attention will be paid also to the influence of selected ions simulating buffering activity of human saliva, and influencing ionic equilibrium in buccal cavity (Ca2+, F-, PO43-) on corrosion rates, and to the influence of corrosion on micromechanical properties of natural teeth and synthetic dental materials, including their resistance against micro-abrasion, micro-crack formation, and fatigue resistance leading to abfraction during cyclic loading. The results will comprise determination of factors influencing damage of dental materials, identification of the means facilitating reduction or elimination of the damage, and optimization of dental materials from the point of view of their corrosion resistance. |
| Duration: |
1.7.2012 - 31.12.2015 |
| OC&PCN - Organoclays and their composites with polymers |
| Organoíly a ich kompozity s polymérmi |
| Program: |
APVV |
| Project leader: |
RNDr. Komadel Peter DrSc. |
| Annotation: | This project covers investigation of clay minerals, their modifications with organic cations and applications in preparation of polymer-clay nanocomposites. Organomontmorillonites will be prepared from a Slovak bentonite JP and from alkyl-ammonium surfactants containing various number of octyl chains, their important properties will be determined and their composites with polymers will be tested. These are so far unexplored isomers of frequently studied and applied alkyl-ammonium surfactant. Procedure of the synthesis of hydroxyderivates of alkylammonium salts will be verified and some synthesis of new surfactants carrying suitable functional groups will be performed from reactive precursors with a double bond. Other smectites of various chemical composition and structure will be used for preparation of organoclays to investigate the effect of clay mineral on the properties of intercalates. Optimal modification for design of nanocomposites with polyolefins, rubber, biodegradable plastics, and epoxy will be sought to determine the relations between ultimate properties and the structure. Mechanical properties of prepared fillers will be measured, the fillers will be characterized also by the method of rheology of suspensions in selected solvents, optimal compatibility of the filler will be found for each polymer. |
| Duration: |
1.5.2011 - 31.10.2014 |
| PAPHET - Polyaplicable heterocycles - design, synthesis and properties |
| Polyaplikovateľné heterocykly - návrh štruktúry, syntéza a vlastnosti |
| Program: |
APVV |
| Project leader: |
RNDr. Smrčok Ľubomír CSc. |
| Duration: |
1.7.2012 - 31.12.2015 |
| Industrial research for needs of the reengineering of the unique technology of the glass preparation and the forming work - PVTECHSKLO |
| Priemyselný výskum pre potreby zefektívnenia unikátnej technológie tavenia a tvarovania úžitkového skla - PVTECHSKLO |
| Program: |
Štrukturálne fondy EÚ Výskum a vývoj |
| Project leader: |
doc. Ing. Šimurka Peter PhD. |
| Duration: |
1.4.2010 - 31.3.2014 |
| Preparation and properties of novel organoclays for polymer and environmental applications |
| Príprava a vlastnosti nových typov organoílov pre polymérne a environmentálne aplikácie |
| Program: |
VEGA |
| Project leader: |
RNDr. Madejová Jana DrSc. |
| Annotation: | This project is focused on preparation, characterization and properties of novel organo-modified clays to be used as nano-fillers for polymer-clay nanocomposites (PCN) or as adsorbents of heavy metal cations. Organoclays will be prepared from various types of smectites and different organic cations including alkylammonium cations unexplored yet for PCN applications. The intercalation of cations into smectite interlayers will be studied by different methods including near IR spectroscopy. A new method based on NIR measurements will be designed to examine the hydration properties. Investigation of selected organoclays will substantially support development of new types of clay fillers tailored for specific polymer matrices. Organoclays with chelating groups will be tested for adsorption of heavy metal cations. Effect of layer charge of smectite on its sorption capacity will be studied. New methodological contribution is expected using potentiometry and conductometry for complex electrochemical measurements. |
| Duration: |
1.1.2013 - 31.12.2016 |
| RelChem - Relativistic calculations of NMR and EPR parameters: from numbers to insight |
| Relativistické výpočty NMR a EPR parametrov: od čísel k pochopeniu podstaty |
| Program: |
APVV |
| Project leader: |
Dr. Malkin Oľga DrSc. |
| Annotation: | The project is devoted to the development and implementation of new methods for interpretation of NMR and EPR parameters obtained using different relativistic approaches, recently developed in our group. The goal is to provide analysis of NMR and EPR parameters in terms of contributions from molecular orbitals and to develop visualization tools. That would allow one to get new insight into origins of particular changes of NMR and EPR parameters in compounds containing heavy elements (including transitional metal complexes and compounds containing lanthanides and actinides). |
| Duration: |
1.9.2009 - 31.8.2013 |
| ReSpect - Relativistic calculations of parameters of NMR and EPR spectroscopy for compounds containing heavy elements: further methodological development and applications |
| Relativistické výpočty parametrov NMR a EPR spektroskopie pre zlúčeniny obsahujúce ťažké prvky: pokračovanie metodologického vývoja a aplikácie |
| Program: |
APVV |
| Project leader: |
Dr. Malkin Vladimír DrSc. |
| Annotation: | The project is aimed at the improvement of the accuracy a computational efficiency of our newly developed four-component methods for relativistic calculation of NMR and EPR parameters. The corner-stone of the project is the matrix Dirac-Kohn-Sham method employing either the restricted kinetic balanced basis for the small component (RKB, in case of EPR parameters) or restricted magnetically balanced basis (RMB, in case of NMR parameters). The project includes significant speeding up of the coupled-perturbed scheme, implementation of the four-index integrals and, in collaboration with our foreign partners, applications of newly developed methods for investigation of magnetic properties of heavy-element compounds. Achievement of the project goals will allow one to study systems of real chemical interests of the new level which was not available earlier. |
| Duration: |
1.5.2011 - 30.4.2014 |
| ReSpect - a practical and efficient computational tool to study heavy element compounds |
| ReSpect - praktický a účinný výpočtový nástroj pre štúdium zlúčenín ťažkých prvkov |
| Program: |
VEGA |
| Project leader: |
Dr. Malkin Oľga DrSc. |
| Duration: |
1.1.2013 - 31.12.2016 |
| Molten fluoride systems for high temperature applications with potential in energy sector application |
| Roztavené fluoridové systémy pre vysokoteplotné aplikácie s potenciálom využitia v energetickom sektore |
| Program: |
VEGA |
| Project leader: |
doc. Ing. Boča Miroslav PhD. |
| Annotation: | The project is based on the complex study of physico-chemical (density, viscosity, surface tension) and
thermodynamic properties (phase diagrams, thermochemical characteristics) and the study of “structure” of
fluoride systems considered for high temperature applications especially in nuclear industry. The investigated
systems play important role in development of nuclear reactors of new generation. The influence of corrosion
products of some construction materials on studied physico-chemical parameters is an important part of the
project, as well. The determination of the particular physico-chemical properties will be performed by suitable and
available 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 the
phases will be carried out by IR, XRD, WD XRF and by EDX analysis together with SEM method.
|
| Duration: |
1.1.2012 - 31.12.2015 |
| Structure and properties of oxide glasses – molecular dynamics, thermodynamic models, crystallization, vibrational and impedance spectroscopy |
| Štruktúra a vlastnosti oxidových skiel – molekulová dynamika, termodynamické modely, kryštalizácia, vibračné a impedančné spektrá |
| Program: |
VEGA |
| Project leader: |
Ing. Chromčíková Mária PhD. |
| Annotation: | Complex examination of the relations between the composition, structure and physical properties of glasses,
containing network forming oxides, e.g. Al2O3, P2O5 or B2O3, which form coordination polyhedrons with various
number of the oxygen atoms and possess different types of bonding within the network structure of glass. Except
of spectroscopic methods (mainly the quantitative Raman spectroscopy) the structure of glasses will be examined
also by the method of quantum molecular dynamics. Indirect methods will include thermodynamic modeling
based on the regular solutions approach. The most important properties of selected glasses (density, viscosity,
thermal expansion, refraction index, surface tension, impedance spectroscopy) and their temperature and
compositional dependences will be determined experimentally. The glass crystallization kinetics will be studied by
DTA and DSC. The thermodynamic models will be confronted with the results of experiments and of the MD
simulations. |
| Duration: |
1.1.2012 - 31.12.2015 |
| SVOJE - Structure and properties of oxide glasses for application in nuclear power technology |
| Štruktúra a vlastnosti oxidových skiel určených na aplikácie v jadrovej energetike |
| Program: |
APVV |
| Project leader: |
prof. Ing. Liška Marek DrSc. |
| Annotation: | The interpretation of composition-structure-property relationships of two groups of model glasses (glasses for fibrous insulation and for vitrification of radioactive waste) with emphasizing the properties of glass application in the field of atomic energy. The glass structure will result from the thermodynamic model that will be compared with the results of quantum DFT molecular dynamics calculations of structure and vibrational spectra. Application of the TD model for interpretation of structure-property relationships resides in regression analysis where the dependent variable is represented by the value of particular physical quantity and independent variables are given by equilibrium molar amounts of structural units. In case of the study of model glass leaching by liquid media (distilled water and model coolant solution used in case of LOCA in NPPs) the TD model of equilibrium composition of the solution will be constructed by the geochemical code PHREEQC. The calculation of affinity of glass dissolution will be based on the TD model of glass - on the hydration Gibbs energy of individual structural units. For the Cs evaporation study the description of gaseous phase - glass melt equilibrium the TD model of glass melt and gaseous phase will be used. |
| Duration: |
1.7.2012 - 31.12.2015 |
| Study of the mechanism of corrosion of materials used in a melting of industrially produced glasses |
| Štúdium mechanizmu korózie materiálov používaných pri tavení priemyselne vyrábaných skiel |
| Program: |
VEGA |
| Project leader: |
doc. Ing. Šimurka Peter PhD. |
| Annotation: | The aim of the project is to study corrosion processes in materials that are in glass melting furnaces in glass works. The mechanism of corrosion of refractory materials and the electrodes which are in contact with either glass melt or volatile oxides from glass melt, will be studied in detail.
The laboratory corrosion tests, together with the analysis of inhomogeneities in glass products originating from corrosion of materials during the melting process will be used to determine mechanisms of studied materials corrosion. The SEM, EDXA, X-ray diffraction analysis, RTG fluorescence, electrochemical methods and other experimental techniques will be utilized. The studies of corrosion mechanisms of materials used in the glass melting process will results in the increase of efficiency of glass production due to the reduction of glass waste from glass production. |
| Duration: |
1.1.2012 - 31.12.2015 |
| SPFTVTA - A study of the potential of fluoride molten salts for high temperature applications |
| Štúdium potenciálu fluoridových tavenín pre vysokoteplotné aplikácie |
| Program: |
APVV |
| Project leader: |
doc. Ing. Boča Miroslav PhD. |
| 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 |
| Structure and dynamics of hydrogen bonds in solids by diffraction methods, quantum chemistry and inelastic neutron spectroscopy (INS) |
| Štúdium štruktúry a dynamiky vodíkových väzieb v tuhých látkach difrakčnými metódami kvantovej chémie a neelastickým rozptylom neutrónov |
| Program: |
VEGA |
| Project leader: |
RNDr. Smrčok Ľubomír CSc. |
| Annotation: | Proposed project focuses on the study of hydrogen bonds in the solid state by combined use of diffraction (X-ray and neutron), spectral (vibrational spectroscopy by inelastic neutron scattering) and by quantum chemical methods (molecular as well as the solid state calculations). The project focuses on the applications of experimental and theoretical methods rather than on a group of concrete compounds. The main goal is to find interplay between the theoretical calculations and the experiments with the aim to understand better the nature of hydrogen bonds in solids. Diffraction data will be used to provide geometry of hydrogen bonds and to check for the presence of possible static disorder of hydrogen atoms in a structure. The effect of hydrogen bonding on geometry of molecules and vibrational energies will be determined. Measured INS spectra of will be interpreted by direct comparison to calculated spectra and the individual vibrational modes involving hydrogen atoms will be unambiguously recognized.
|
| Duration: |
1.1.2012 - 31.1.2015 |
| The influence of the water content in cementitious minerals on their structural, physical, chemical and mechanical properties – Model and experimental study |
| Štúdium vplyvu obsahu vody v slinkových mineráloch na ich štruktúrne, fyzikálno-chemické a mechanické vlastnosti - modelový a experimentálny prístup |
| Program: |
VEGA |
| Project leader: |
Ing. Scholtzová Eva CSc. |
| Annotation: | The project represents a combined experimental and theoretical approach for characterization, explanation, and prediction of properties of cementitious (CSH) minerals with respect to dehydration/hydration process. This will help to understand the role of water in the structure of the CSH minerals and the influence of water on the mechanical and chemical stability of these minerals.
The main goal of the combination of theoretical and experimental methods is a complex characterization of the relation between chemical composition and the structure of the cementitious minerals, and their mechanical, energetic, and thermodynamic properties.
The used theoretical methods will bring a significant contribution to understanding of structural, chemical, and physical properties of the cementitious materials at the molecular level. Moreover, theoretical methods will support and help in interpretation of experimental date obtained by using of thermogravimetric, calorimetric and spectroscopic methods.
|
| Duration: |
1.1.2012 - 31.12.2014 |
| Research of ceramic composite materials prepared from polymer precursor SiOC for high corrosive environments |
| Výskum keramických kompozitných materiálov pripravených z polymérnych prekurzorov SiOC pre vysoko korozívne prostredie |
| Program: |
VEGA |
| Project leader: |
prof. RNDr. Šajgalík Pavol DrSc. |
| Annotation: | The project is dealing with development and characterization of ceramic materials originate from SiC and Si3N4 using novel uncommon sintering additives like SiOC, SiAlOC polymer derived glasses. The aim is increasing of corrosive resistance and keeping of mechanical properties (environment of halogens and melts of Al and Fe) and salts. The objectives of the research are to understand the relationship between the processing of ceramic materials, used sintering additives and their physical and mechanical properties before and after a experiment in corrosive environment. The corrosion tests, detailed chemical and structural analysis will help to select proper materials. Selected materials will be tailored by suitable sintering conditions and compositions. New developed materials should be appropriate for application in several industries. |
| Duration: |
1.1.2010 - 31.12.2013 |
| Development of new ceramic materials showing long lasting phosphorescence |
| Vývoj keramických materiálov vykazujúcich dlhotrvajúcu fosforescenciu |
| Program: |
VEGA |
| Project leader: |
Mgr. Švančárek Peter PhD. |
| Duration: |
1.1.2013 - 31.12.2016 |
| BioNitrid - Development of composite biomaterials based on silicon nitride |
| Vývoj kompozitných biomateriálov na báze nitridu kremičitého |
| Program: |
APVV |
| Project leader: |
prof. RNDr. Šajgalík Pavol DrSc. |
| Annotation: | The project deals with development and characterization of composite ceramic biomaterials based on silicon nitride in combination with bioactive films formed by hydroxyapatite. Structure and mechanical properties of the material should imitate the human bone characteristics as much as possible. At first the silicon nitride ceramics will be prepared using two different sintering methods (pressureless sintering in oxidizing atmosphere and gas pressure sintering). The effect of the pore volume fraction and the pore size distribution on the Si3N4 mechanical properties, especially on the strength and the Young´s modulus will be observed. In the second phase of the project the preparation of bioactive hydroxyapatite surface layer using sol-gel method on porous Si3N4 matrix will be optimised. The film functioned as a bioactive film should have a reasonably good stability to withstand dissolution of the film while in contact with the body fluid, rough or porous surface morphology to increase joint area with natural bone, and good adhesion strength to maintain a strong bridge to connect the implant with bone tissue. Newly developed composite materials should be suitable for bioapplication especially as trabecular bone substitute. |
| Duration: |
1.5.2011 - 31.10.2014 |
| SiNGra - Development of Si3N4 with addition of grapheme platelets |
| Vývoj nitridu kremičitého s prídavkom multivrstiev grafénu. |
| Program: |
APVV |
| Project leader: |
prof. RNDr. Šajgalík Pavol DrSc. |
| Annotation: | One of the ways to improve mechanical properties of silicon nitride is by formation of composites systems. The investigations of graphene as a filler for different matrix materials started immediately after the discovery unique mechanical and electrical properties of graphene. Recent research studies confirm the expectations and significant improvement of mechanical and electrical properties of the polymer composites with graphene filler. It is also expected that the incorporation of graphene applications of ceramic materials. The aim of the project is to develop silicon nitride - graphene platelet composite materials with improved fracture mechanical and functional properties. The scientific results of the project will include the parameters of the processing and the set of mechanical properties necessary for the estimation of application possibilities. |
| Duration: |
1.7.2012 - 31.12.2015 |
| Knowledge database and expert system for environmental friendly solutions of loss of coolant accidents in atomic nuclear power plants - ZDESJE. |
| Znalostná databáza a expertný systém environmentálneho riešenia havárií straty chladiva v prevádzke jadrovej elektrárne - ZDESJE. |
| Program: |
Štrukturálne fondy EÚ Výskum a vývoj |
| Project leader: |
doc. Ing. Šimurka Peter PhD. |
| Duration: |
1.4.2010 - 31.3.2014 |
Projects total: 37
|
|
|
