{"id":151,"date":"2019-02-13T08:14:21","date_gmt":"2019-02-13T07:14:21","guid":{"rendered":"http:\/\/websrv.saske.sk\/imr\/?page_id=151"},"modified":"2019-03-20T10:41:52","modified_gmt":"2019-03-20T09:41:52","slug":"vyskumne-oblasti","status":"publish","type":"page","link":"https:\/\/websrv.saske.sk\/imr\/vedecke-divizie\/divizia-keramickych-a-nekovovych-systemov\/vyskumne-oblasti\/","title":{"rendered":"V\u00fdskumn\u00e9 oblasti"},"content":{"rendered":"<p><strong><span style=\"color: #ff6600\">Charakteristika div\u00edzie<\/span><br \/>\n<\/strong><\/p>\n<p><strong>\u00a0<\/strong>Vedecko-v\u00fdskumn\u00e9 aktivity div\u00edzie s\u00fa zameran\u00e9 na v\u00fdskum a v\u00fdvoj keramick\u00fdch materi\u00e1lov, ich kompozitov a nanokompozitov, nano\/mikrovl\u00e1knien, keramick\u00fdch tenk\u00fdch vrstiev a povlakov. V oblasti v\u00fdskumu keramick\u00fdch materi\u00e1lov je hlavn\u00e1 pozornos\u0165 venovan\u00e1 \u0161t\u00fadiu mikro\u0161trukt\u00fary, stanoveniu mechanick\u00fdm a funk\u010dn\u00fdch vlastnost\u00ed keram\u00edk ur\u010den\u00fdch pre pokro\u010dil\u00e9 aplik\u00e1cie a na ur\u010denie vz\u0165ahu medzi technologick\u00fdmi postupmi pr\u00edpravy,\u00a0 mikro\u0161trukt\u00farnymi parametrami a\u00a0fin\u00e1lnymi mechanick\u00fdmi a\u00a0funk\u010dn\u00fdm vlastnos\u0165ami.<\/p>\n<p>Ve\u013ek\u00e1 \u010das\u0165 aktiv\u00edt je venovan\u00e1 v\u00fdvoju a implementovaniu modern\u00fdch met\u00f3d a postupov spojen\u00fdch s pr\u00edpravou a testovan\u00edm nov\u00fdch \u00a0materi\u00e1lov na nano a\u00a0mikro \u00farovni (SPS technol\u00f3gia &#8211; Spark Plasma Sintering, Electrospinning &#8211; elektrostatick\u00e9 zvl\u00e1k\u0148ovanie polym\u00e9rov, PVD &#8211; Physical Vapour Deposition, SEM-FIB mikroskopia).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-695 size-full\" src=\"https:\/\/websrv.saske.sk\/imr\/wp-content\/uploads\/2019\/03\/Divizia.png\" alt=\"\" width=\"823\" height=\"684\" srcset=\"https:\/\/websrv.saske.sk\/imr\/wp-content\/uploads\/2019\/03\/Divizia.png 823w, https:\/\/websrv.saske.sk\/imr\/wp-content\/uploads\/2019\/03\/Divizia-300x249.png 300w, https:\/\/websrv.saske.sk\/imr\/wp-content\/uploads\/2019\/03\/Divizia-768x638.png 768w\" sizes=\"auto, (max-width: 823px) 100vw, 823px\" \/><\/p>\n<p><span style=\"color: #ff6600\"><strong>Charakteriz\u00e1cia materi\u00e1lov<\/strong><\/span><\/p>\n<ul>\n<li>Mikro\u0161trukt\u00farna anal\u00fdza \u2013 pr\u00edprava vzoriek\u00a0pomocou keramografie\u00a0(br\u00fasenie, le\u0161tenie, leptanie).<\/li>\n<li>Pr\u00edprava tenk\u00fdch f\u00f3li\u00ed pre pozorovanie na TEM (jamkovanie, i\u00f3nov\u00e9 bombardovanie)<\/li>\n<li>Sveteln\u00e1 mikroskopia, rastrovacia elektr\u00f3nov\u00e1 mikroskopia, transmisn\u00e1 elektr\u00f3nov\u00e1 mikroskopia, AFM , \u0161tatistick\u00e9 anal\u00fdzy mikro\u0161trukt\u00farnych parametrov, Ramanovsk\u00e1 spektroskopia.<\/li>\n<li>SEM\/FIB mikroskopa poskytuje: Dvoj- a\u00a0troj- rozmern\u00e9 zobrazovanie a\u00a0anal\u00fdza vodiv\u00fdch i\u00a0nevodiv\u00fdch materi\u00e1lov s\u00a0pou\u017eit\u00edm lok\u00e1lneho kompenz\u00e1tora n\u00e1boja. Pr\u00edprava ultratenk\u00fdch lamiel (&lt;50 nm) pre pozorovanie v\u00a0TEM a vodiv\u00fdch i\u00a0nevodiv\u00fdch nano\u0161trukt\u00far (&lt; 20 nm) cestou depoz\u00edcie z\u00a0plynnej f\u00e1zy. Anal\u00fdza prie\u010dnych rezov a\u00a0\u0161trukt\u00farnych rozhran\u00ed materi\u00e1lov hr\u00fabky vrstiev a ch\u00fdb v materi\u00e1li. Mletie, bombardovanie, i\u00f3nov\u00e9 leptanie materi\u00e1lov. I\u00f3nov\u00e1 litografia. Pr\u00edprava mikro\u00fatvarov (pilierov) pre n\u00e1sledn\u00e9 nanomechanick\u00e9 sk\u00fa\u0161anie.<\/li>\n<li>Testy mechanick\u00fdch a\u00a0funk\u010dn\u00fdch vlastnost\u00ed\u00a0\u2013 sk\u00fa\u0161ka v \u0161tvorbodovom ohybe \/ Weibullova anal\u00fdza,\u00a0lomov\u00e1 h\u00fa\u017eevnatos\u0165\u00a0(IF, IS, SENB, SEVNB), indenta\u010dn\u00e9 met\u00f3dy &#8211; tvrdos\u0165, lomov\u00e1 h\u00fa\u017eevnatos\u0165, \u00fanava, elektrick\u00e1 a\u00a0tepeln\u00e1 vodivos\u0165 at\u010f.<\/li>\n<li>Tribol\u00f3gia<\/li>\n<li>Vysokoteplotn\u00e9 charakteristiky krehk\u00fdch materi\u00e1lov (te\u010denie, tepeln\u00e9 \u0161oky, oxid\u00e1cia); fraktografick\u00e1 anal\u00fdza por\u00fach krehk\u00fdch materi\u00e1lov, predikcia \u017eivotnosti a spo\u013eahlivosti krehk\u00fdch materi\u00e1lov.<\/li>\n<li>Makro a mikrofraktografia, \u0161tatistick\u00e9 anal\u00fdzy lomov\u00fdch mechanizmov.<\/li>\n<li>Nanomechanick\u00e9 vlastnosti \u2013 tvrdos\u0165, micro pillar, micro cantilever, scratch sk\u00fa\u0161ky<\/li>\n<\/ul>\n<p>V pr\u00edpade ot\u00e1zok n\u00e1s pros\u00edm kontaktujte na:\u00a0 jdusza@saske.sk<\/p>\n<p>Na\u0161e hlavn\u00e9 aktivity s\u00fa rozdelen\u00e9 na nasleduj\u00face v\u00fdskumn\u00e9 oblasti:<\/p>\n<p><strong><span style=\"color: #ff6600\">A: V\u00fdskum keramick\u00fdch materi\u00e1lov a\u00a0kompozitov<\/span><\/strong><\/p>\n<p>V\u00fdvoj progres\u00edvnych keramick\u00fdch kompozitov s\u00a0uhl\u00edkov\u00fdmi nano\/mikro \u0161trukt\u00farami (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, at\u010f).<\/p>\n<p>V\u00fdvoj UHTC keramiky (Ultra High Temperature Ceramic \u2013 High Entropy Ceramics) pre pou\u017eitie v\u00a0extr\u00e9mnych podmienkach.<\/p>\n<p><em>Pr\u00edprava materi\u00e1lov pokro\u010dil\u00fdmi met\u00f3dami spekania:<\/em><\/p>\n<p>Spekanie za pr\u00edtomnosti plazmy a\u00a0ultra-r\u00fdchlymi technikami s vyu\u017eit\u00edm elektrick\u00e9ho po\u013ea na zariaden\u00ed &#8222;spark plasma sintering&#8220;. Mo\u017enos\u0165 spekania materi\u00e1lov s keramickou i kovovou matricou, tvrdokovov, cermetov a pod, vo v\u00e1kuu pri vysok\u00fdch teplot\u00e1ch, vysok\u00fdch tlakoch a kr\u00e1tkych \u010dasoch.<\/p>\n<p><strong>\u00a0<\/strong><strong><span style=\"color: #ff6600\">B: Pr\u00edprava tenk\u00fdch povlakov <\/span><\/strong><span style=\"color: #ff6600\"><strong>pre in\u017einierske aplik\u00e1cie PVD met\u00f3dami<\/strong><\/span><\/p>\n<p>PVD laborat\u00f3rium je vybaven\u00e9 najnov\u0161\u00edmi PVD technol\u00f3giami na pr\u00edpravu tvrd\u00fdch, supertvrd\u00fdch a pr\u00edpadne aj funk\u010dn\u00fdch povlakov na b\u00e1ze jedno- a viackomponentn\u00fdch syst\u00e9mov, vr\u00e1tane nanokompozitn\u00fdch, multivrstvov\u00fdch a gradientn\u00fdch povlakov, pre stroj\u00e1rske a in\u00e9 aplik\u00e1cie na b\u00e1ze HiPIMS (High Power Impulse Magnetron Sputtering) &#8211; magnetr\u00f3nov\u00e9ho napra\u0161ovania vysokoenergetick\u00fdmi impulzami na b\u00e1ze HiTUS (High Target Utilization Sputtering) &#8211; napra\u0161ovania s vysokou vyu\u017eite\u013enos\u0165ou ter\u010da a nez\u00e1visl\u00fdm zdrojom plazmy.<\/p>\n<p><strong>\u00a0<\/strong><strong><span style=\"color: #ff6600\">C: Testovanie materi\u00e1lov<\/span><\/strong><\/p>\n<p><em>Tribol\u00f3gia: <\/em>Sk\u00famanie tribologick\u00fdch vlastnost\u00ed, ako s\u00fa koeficienty trenia, re\u017eimy a mechanizmy opotrebenia, obzvl\u00e1\u0161\u0165 u tvrd\u00fdch l\u00e1tok (keramiky, tvrdokovy, kompozity, zlatiny), ale aj u biomateri\u00e1lov, priemyseln\u00fdch materi\u00e1lov, ochrann\u00fdch povlakov a in\u00fdch l\u00e1tok. Zabezpe\u010dujeme sk\u00fa\u0161ky v r\u00f4znych re\u017eimoch za\u0165a\u017eovania, od 1 mN (nanotribometer) po 1 kN (univerz\u00e1lny tribometer s menite\u013enou geometriou. V geometrii pin\/ball-on-disk mo\u017enos\u0165 testov do vysok\u00fdch tepl\u00f4t (800\u00b0C).<\/p>\n<p><em>Nanoindent\u00e1cia a at\u00f3mov\u00e1 silov\u00e1 mikroskopia:<\/em><\/p>\n<p>Testovanie tvrdosti, pru\u017enosti \u010fal\u0161\u00edch mechanick\u00fdch vlastnost\u00ed povlakov a objemov\u00fdch materi\u00e1lov na mikro- a\u017e nano-\u00farovni. Sk\u00famanie mikro\u0161trukt\u00fary a topografie povrchov, ako aj niektor\u00fdch mechanick\u00fdch a magnetick\u00fdch vlastnost\u00ed pomocou at\u00f3movej silovej mikroskopie s nanometrick\u00fdm rozl\u00ed\u0161en\u00edm.<\/p>\n<p><strong><span style=\"color: #ff6600\">D: Pr\u00edprava nano\/mikrovl\u00e1kien<\/span><\/strong><\/p>\n<p>Aktivity v\u00a0tejto oblasti n\u00e1\u0161ho v\u00fdskumu s\u00fa zameran\u00e9 na v\u00fdvoj a\u00a0charakteriz\u00e1ciu polym\u00e9rnych, keramick\u00fdch a\u00a0uhl\u00edkov\u00fdch\u00a0 nano\/mikrovl\u00e1kien pomocou technol\u00f3gie bezihlov\u00e9ho zvl\u00e1k\u0148ovania z vo\u013enej hladiny roztoku polym\u00e9ru na pr\u00edstroji NANOSPIDER<sup>TM<\/sup> NS Lab 200. Dan\u00e1 technol\u00f3gia n\u00e1m umo\u017e\u0148uje:<\/p>\n<p>&#8211; pr\u00edpravu kontinu\u00e1lnych, rovnomern\u00fdch, n\u00e1hodne usporiadan\u00fdch vl\u00e1kien s priemerom 50 &#8211; 700 nm vo forme netkanej text\u00edlie \u0161\u00edrky do 350 mm.<\/p>\n<p>&#8211; mo\u017enos\u0165 zvl\u00e1kni\u0165 \u0161irok\u00e9 spektrum syntetick\u00fdch aj pr\u00edrodn\u00fdch polym\u00e9rov: <em>PVA, PA-6, PAN, PUR, PEO, PVP, chitosan, kolag\u00e9n, PLA, PCL, HA&#8230;<\/em><\/p>\n<p>&#8211; mo\u017enos\u0165 n\u00e1sledne z\u00a0prekurzorov\u00fdch vl\u00e1kien vyrobi\u0165 keramick\u00e9 oxidick\u00e9 vl\u00e1kna &#8211; <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> ZrO<sub>2<\/sub>&#8230; <\/em>alebo \u010dist\u00e9 aj nano\u010dasticami dopovan\u00e9 uhl\u00edkov\u00e9 vl\u00e1kna s\u00a0kontrolovanou p\u00f3rovitos\u0165ou.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Charakteristika div\u00edzie \u00a0Vedecko-v\u00fdskumn\u00e9 aktivity div\u00edzie s\u00fa zameran\u00e9 na v\u00fdskum a v\u00fdvoj keramick\u00fdch materi\u00e1lov, ich kompozitov a nanokompozitov, nano\/mikrovl\u00e1knien, keramick\u00fdch tenk\u00fdch vrstiev a povlakov. V oblasti&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":108,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-151","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/websrv.saske.sk\/imr\/wp-json\/wp\/v2\/pages\/151","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/websrv.saske.sk\/imr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/websrv.saske.sk\/imr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/websrv.saske.sk\/imr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/websrv.saske.sk\/imr\/wp-json\/wp\/v2\/comments?post=151"}],"version-history":[{"count":7,"href":"https:\/\/websrv.saske.sk\/imr\/wp-json\/wp\/v2\/pages\/151\/revisions"}],"predecessor-version":[{"id":938,"href":"https:\/\/websrv.saske.sk\/imr\/wp-json\/wp\/v2\/pages\/151\/revisions\/938"}],"up":[{"embeddable":true,"href":"https:\/\/websrv.saske.sk\/imr\/wp-json\/wp\/v2\/pages\/108"}],"wp:attachment":[{"href":"https:\/\/websrv.saske.sk\/imr\/wp-json\/wp\/v2\/media?parent=151"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}