{"id":317,"date":"2019-05-15T13:46:34","date_gmt":"2019-05-15T11:46:34","guid":{"rendered":"http:\/\/websrv.saske.sk\/imr\/en\/?page_id=317"},"modified":"2019-05-20T11:42:48","modified_gmt":"2019-05-20T09:42:48","slug":"research-areas","status":"publish","type":"page","link":"https:\/\/websrv.saske.sk\/imr\/en\/divisions\/division-of-ceramic-and-non-metallic-systems\/research-areas\/","title":{"rendered":"Research areas"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Characteristic of division<\/strong><\/span><\/p>\n<p>The scientific-research activities of the divisions are focused on the research and development of ceramic materials, their composites and nanocomposites, nano\/microfibers, ceramics of thin layers and coatings. In the area of research of ceramic materials, the main attention is given to the sudy of microstructure, determining the mechanical and functional properties of ceramics designated for advanced applications and to determine the relationship between technological approaches of preparation, microstructural parameters and the final mechanical and functional properties.<\/p>\n<p>A great part of the activity is devoted to the development and implementation of modern methods and approaches connected with the preparation and testing of new materials at the nano and micro levels (SPS technology \u2013 Spark Plasma Sintering, Electrospinning \u2013 electrostatic spinning of polymers, PVD \u2013 Physical Vapour Deposition, SEM-FIB microscopy).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-410 size-full\" src=\"https:\/\/websrv.saske.sk\/imr\/en\/wp-content\/uploads\/sites\/2\/2019\/05\/Divizia_Dusza.png\" alt=\"\" width=\"823\" height=\"684\" srcset=\"https:\/\/websrv.saske.sk\/imr\/en\/wp-content\/uploads\/sites\/2\/2019\/05\/Divizia_Dusza.png 823w, https:\/\/websrv.saske.sk\/imr\/en\/wp-content\/uploads\/sites\/2\/2019\/05\/Divizia_Dusza-300x249.png 300w, https:\/\/websrv.saske.sk\/imr\/en\/wp-content\/uploads\/sites\/2\/2019\/05\/Divizia_Dusza-768x638.png 768w\" sizes=\"auto, (max-width: 823px) 100vw, 823px\" \/><\/p>\n<p><span style=\"color: #ff6600\"><strong>Characterization of materials<\/strong><\/span><\/p>\n<ul>\n<li>Microstructure analysis \u2013 preparing samples with the aid of ceramography\u00a0(grinding, buffing, etching).<\/li>\n<li>Preparation of thin foils for observation on TEM (pitting, ion bombardment)<\/li>\n<li>Light microscopy, scanning electron microscopy, transmission electron microscopy, AFM, statistical analysis of microstructural parameters, Raman spectroscopy.<\/li>\n<li>SEM\/FIB microscopy provides: Two- and Three- dimensional imaging and analysis of conductive and non-conductive materials with the use of a local compensator charge. Preparation of ultra-thin laminations (&lt;50 nm) for observation in TEM and conductive and non-conductive microstructures (&lt; 20 nm) by way of deposition from the gas phase. Analysis of cross-sections and the structural interface of materials of thick layers and flaws in the material. Milling, bombardment, ionic etching of materials. Ionic lithography. Preparation of microforms (pillars) for the subsequent nanomechanical testing.<\/li>\n<li>Tests of mechanical and functional properties\u00a0\u2013 testing in four-point bending \/ Weibull analysis, fracture toughness\u00a0(IF, IS, SENB, SEVNB), indentation methods \u2013 hardness, fracture toughness, fatigue, electrical and thermal conductivity, etc.<\/li>\n<li>Tribology<\/li>\n<li>High-temperature characteristics of brittle materials (creep, thermal shock, oxidation); fractographic analysis of the flaws of brittle materials, prediction of the lifespan and dependability of brittle materials.<\/li>\n<li>Macro and microfractography, statistical analysis of fracture mechanisms.<\/li>\n<li>Nanomechanical properties \u2013 hardness, micro pillar, micro cantilever, scratch testing<\/li>\n<\/ul>\n<p>In the event of questions, please contact us at:\u00a0 jdusza@saske.sk<\/p>\n<p>Our main activities are divided into the following research areas:<\/p>\n<p><span style=\"color: #ff6600\"><strong>A: Research of ceramic materials and composites<\/strong><\/span><\/p>\n<p>Development of progressive ceramic composites with carbon nano-micro structures (B<sub>4<\/sub>C, TiB<sub>2<\/sub>, ZrB<sub>2<\/sub>, SiC, Si<sub>3<\/sub>N<sub>4<\/sub>, CNTs \u2013 carbon nanotubes, GPLs \u2013 graphene platelets, etc).<\/p>\n<p>Developing UHTC ceramics (Ultra High Temperature Ceramic \u2013 High Entropy Ceramics) for use in extreme conditions.<\/p>\n<p><em>Preparation of materials by advanced sintering methods:<\/em><\/p>\n<p>Sintering in the presence of plasma and ultra-rapid techniques with use of the electric field on the equipoment \u201espark plasma sintering\u201c. There are possibilities of sintering materials with a ceramic or metal matrix, hardmetals, cermets, etc., in a vacuum at high temperatures, high pressures and short time periods.<\/p>\n<p><span style=\"color: #ff6600\"><strong>B: Preparing thin coatings for engineering applications by PVD methods<\/strong><\/span><\/p>\n<p>The PVD laboratory is equipped with the newest PVD technologies for preparing hard, superhard, and alteratively functional coatings on the basis of one or several compenent systems, including nanocomposite, multilayer and gradient coatings, for engineering and other applications on the basis of HiPIMS (High Power Impulse Magnetron Sputtering) \u2013 magnetron sputtering by high-energy impulses on the basis of HiTUS (High Target Utilization Sputtering) \u2013 sputtering with a high efficiency target and an independent source of plasma.<\/p>\n<p><span style=\"color: #ff6600\"><strong>C: Testing materials<\/strong><\/span><\/p>\n<p><em>Tribology:\u00a0<\/em>Examining tribological properties, such as friction coefficients, regimens and mechanisms of wear, especially with hard substances (ceramics, hardmetals, composites, alloys), but also with biomaterials, industrial materials, protective coatings and other substances. We arrange testing with various applications of loads, from 1 mN (nanotribometer) to 1 kN (universal tribometer with alterable geometry. In the geometry pin\/ball-on-disk, there is possibility for tests at high temperature (800\u00b0C).<\/p>\n<p><em>Nanoindentation and atom force microscopy:<\/em><\/p>\n<p>Testing hardness, elasticity of other mechanical properties of coatings and other volume materials at the micro- to the nano- level. Examining the microstructures and topography of the surfaces, as well as some mechanical and magnetic properties using the atom force microscope with nanometric resolution.<\/p>\n<p><span style=\"color: #ff6600\"><strong>D: Preparation of the nano\/microfibers<\/strong><\/span><\/p>\n<p>Activities in this area of our research are focused on the development and characterization of polymer, ceramic and carbon nano\/microfibers with the aid of technology of needleless electrospinning from the free surface of the solution of the polymer on the device NANOSPIDER<sup>TM<\/sup>\u00a0NS Lab 200. This given technology enables us to:<\/p>\n<p>\u2013 prepare continual, uniformly ordered fibers with an average 50 \u2013 700 nm in the form of unwoven textile width to 350 mm.<\/p>\n<p>\u2013 spin a wide spectrum of synthetic and natural polymers:\u00a0<em>PVA, PA-6, PAN, PUR, PEO, PVP, chitosan, collagen, PLA, PCL, HA\u2026<\/em><\/p>\n<p>\u2013 consequently from the precursor fibers produce ceramic oxide fibers \u2013\u00a0<em>Al<sub>2<\/sub>O<sub>3<\/sub>, Fe<sub>3<\/sub>O<sub>4<\/sub>, TiO<sub>2<\/sub>, SnO<sub>2,<\/sub>\u00a0ZrO<sub>2<\/sub>\u2026\u00a0<\/em>or pure nanoparticle doped carbon fibers with controlled porosity.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Characteristic of division The scientific-research activities of the divisions are focused on the research and development of ceramic materials, their composites and nanocomposites, nano\/microfibers, ceramics&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":88,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-317","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/websrv.saske.sk\/imr\/en\/wp-json\/wp\/v2\/pages\/317","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/websrv.saske.sk\/imr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/websrv.saske.sk\/imr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/websrv.saske.sk\/imr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/websrv.saske.sk\/imr\/en\/wp-json\/wp\/v2\/comments?post=317"}],"version-history":[{"count":9,"href":"https:\/\/websrv.saske.sk\/imr\/en\/wp-json\/wp\/v2\/pages\/317\/revisions"}],"predecessor-version":[{"id":416,"href":"https:\/\/websrv.saske.sk\/imr\/en\/wp-json\/wp\/v2\/pages\/317\/revisions\/416"}],"up":[{"embeddable":true,"href":"https:\/\/websrv.saske.sk\/imr\/en\/wp-json\/wp\/v2\/pages\/88"}],"wp:attachment":[{"href":"https:\/\/websrv.saske.sk\/imr\/en\/wp-json\/wp\/v2\/media?parent=317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}