"Fracture behaviour of refractory ceramics after cyclic thermals shock"@en . . "P(GA106/05/0495), P(GP106/05/P119), Z(AV0Z20410507)" . "0862-5468" . . "Romagnoli, M." . . . "5"^^ . . "50" . "251;256" . "6"^^ . . . "476277" . . "Two commercially available refractory ceramic materials primary used as substrates for fast firing of porcelain stoneware were investigated. The first one, commercially known as CONC, contains cordierite and mullite in the ratio 50:50. The REFO refractory composite material with coarser microstructure compared to CONC has a cordierite-to-mullite ratio of 50:45 and the balance is filled by quartz. Both materials were exposed to water-quench tests from 1250\u00B0C, applying various numbers of thermal cycles (shocks). Subsequently the fracture toughness was evaluated on both as-received and shocked samples using the Chevron notched specimen technique. The results were analysed with respect to the microstructure damage caused by the thermal loading. Scanning electron microscopy was used to analyse both microstructure and fracture surfaces in samples with different thermal loading history."@en . "Boccaccini, A. R." . "Fracture behaviour of refractory ceramics after cyclic thermals shock" . "Lomov\u00E9 chov\u00E1n\u00ED \u017E\u00E1ruvzdorn\u00FDch keramik vystaven\u00FDch tepeln\u00FDm \u0161ok\u016Fm"@cs . "CZ - \u010Cesk\u00E1 republika" . . "4" . "Boccaccini, D. N." . . "Cordierite-mullite composite; Refractory materials; Chevron notch"@en . "Two commercially available refractory ceramic materials primary used as substrates for fast firing of porcelain stoneware were investigated. The first one, commercially known as CONC, contains cordierite and mullite in the ratio 50:50. The REFO refractory composite material with coarser microstructure compared to CONC has a cordierite-to-mullite ratio of 50:45 and the balance is filled by quartz. Both materials were exposed to water-quench tests from 1250\u00B0C, applying various numbers of thermal cycles (shocks). Subsequently the fracture toughness was evaluated on both as-received and shocked samples using the Chevron notched specimen technique. The results were analysed with respect to the microstructure damage caused by the thermal loading. Scanning electron microscopy was used to analyse both microstructure and fracture surfaces in samples with different thermal loading history." . . . "Lomov\u00E9 chov\u00E1n\u00ED \u017E\u00E1ruvzdorn\u00FDch keramik vystaven\u00FDch tepeln\u00FDm \u0161ok\u016Fm"@cs . "RIV/68081723:_____/06:00045398!RIV07-AV0-68081723" . "Ceramics - Silik\u00E1ty" . "RIV/68081723:_____/06:00045398" . . . . "Chlup, Zden\u011Bk" . . "1"^^ . "Leonelli, C." . "Fracture behaviour of refractory ceramics after cyclic thermals shock" . "Fracture behaviour of refractory ceramics after cyclic thermals shock"@en . . . "V t\u00E9to pr\u00E1ci byly zkoum\u00E1ny dva komer\u010Dn\u00ED dostupn\u00E9 \u017E\u00E1ruvzdorn\u00E9 keramick\u00E9 materi\u00E1ly prim\u00E1rn\u00ED pou\u017E\u00EDvan\u00E9 jako podlo\u017Eky p\u0159i rychl\u00E9m vypalov\u00E1n\u00ED porcel\u00E1nu. Prvn\u00ED z nich, zn\u00E1m\u00FD pod obchodn\u00ED zna\u010Dkou jako CONC, m\u00E1 pod\u00EDl cordieritu a mulitu 50:50. Druh\u00FD \u017E\u00E1ruvzdorn\u00FD kompozitn\u00ED materi\u00E1l, zn\u00E1m\u00FD jako REFO, vyzna\u010Duj\u00EDc\u00ED se hrub\u0161\u00ED mikrostrukturou v porovn\u00E1n\u00ED s CONC, m\u00E1 pod\u00EDl cordieritu a mulitu 50:45 a zbytek do sta procent je tvo\u0159eno k\u0159emenem. Oba tyto materi\u00E1ly byly vystaveny r\u016Fzn\u00E9mu po\u010Dtu tepeln\u00FDch \u0161ok\u016F tj. opakovan\u00E9mu prudk\u00E9mu ochlazen\u00ED do vody z teploty 1250\u00B0C. N\u00E1sledn\u011B byly provedeny zkou\u0161ky lomov\u00E9 hou\u017Eevnatosti vyu\u017E\u00EDvaj\u00EDc\u00ED techniku chevronov\u00E9ho vrubu u v\u0161ech z\u00EDskan\u00FDch stav\u00F9 v\u010Detn\u011B stavu po dod\u00E1n\u00ED. Rastrovac\u00ED elektronov\u00E1 mikroskopie byla pou\u017Eita jak pro anal\u00FDzu mikrostruktury, tak i lomov\u00FDch ploch u vzork\u016F s r\u016Fznou histori\u00ED tepeln\u00E9ho zat\u011B\u017Eov\u00E1n\u00ED."@cs . "[1C69F20B78B8]" .