"0"^^ . "Pressure-less sintering is the dominant method for the final fabrication of polycrystalline ceramic bodies and new techniques bring rapid heating not available in past. Recently, we have discovered and demonstrated that extremely fast densification and grain growth can be achieved via pressure-less Spark Plasma Sintering. Dense and crack free zirconia ceramic was sintered at the heating rate up to 500 \u00B0C min-1 and dwell time of 2 minutes. The sintering process is accompanied by extremely fast grain growth indicating an unconventional sintering mechanism or heat transfer. The aim of this proposal is to explain the new phenomena via rapid sintering outside of pressure-less SPS conditions. Various advanced ceramic materials will be rapidly sintered based on the heat transfer calculation. A formation of density, grain size or phase gradient is going to confirm the proposed models. The expected results will stimulate development of energy saving processing, thermodynamically non-equilibrium materials, and understanding of materials physics."@en . "1"^^ . "GA13-02476S" . . "rapid sintering, grain growth, modeling, ceramics, densification"@en . . . "0"^^ . . "2014-03-31+02:00"^^ . . " ceramics" . "Beztlakov\u00E9 slinov\u00E1n\u00ED je dominantn\u00ED metodou zhut\u0148ov\u00E1n\u00ED polykrystalick\u00E9 keramiky a nov\u00E9 techniky p\u0159in\u00E1\u0161\u00ED podm\u00EDnky extr\u00E9mn\u011B rychl\u00E9ho oh\u0159evu, kter\u00E9 nebylo mo\u017En\u00E9 v minulosti dos\u00E1hnout. V ned\u00E1vn\u00E9 dob\u011B jsme objevili a demonstrovali mo\u017Enost extr\u00E9mn\u011B rychl\u00E9ho zhutn\u011Bn\u00ED spojen\u00E9ho s r\u016Fstem zrn. Toto bylo dosa\u017Eeno metodou \u201ESpark Plasma Sintering\u201C av\u0161ak bez pou\u017Eit\u00ED tlaku. Hutn\u00E1 zirkonit\u00E1 keramika byla slinuta p\u0159i rychlosti oh\u0159evu 500 \u00B0C min-1 s dobou v\u00FDdr\u017Ee 2 minut a to bez obvykl\u00E9 tvorby trhlin. Uveden\u00FD proces slinov\u00E1n\u00ED je doprov\u00E1zen extr\u00E9mn\u011B rychl\u00FDm r\u016Fstem zrn co\u017E ukazuje na nekonven\u010Dn\u00ED slinovac\u00ED mechanizmus nebo nekonven\u010Dn\u00ED p\u0159enos tepla. C\u00EDlem toho projektu je vysv\u011Btlen\u00ED pozorovan\u00E9ho jevu pomoc\u00ED experiment\u016F mimo SPS. \u0160irok\u00E1 \u0161k\u00E1la pokro\u010Dil\u00FDch keramick\u00FDch materi\u00E1l\u016F bude extr\u00E9mn\u011B rychle slinov\u00E1na v z\u00E1vislosti na v\u00FDpo\u010Dtech p\u0159enosu tepla. Tvorba gradient\u016F hustoty, velikosti zrn, nebo f\u00E1zov\u00FD gradient budou indik\u00E1tory potvrzuj\u00EDc\u00ED navrhovan\u00E9 modely. O\u010Dek\u00E1van\u00E9 v\u00FDsledky povedou k rozvoji energeticky \u00FAsporn\u00FDch procesn\u00EDch metod, termodynamicky nerovnov\u00E1\u017En\u00FDch materi\u00E1l\u016F, a porozum\u011Bn\u00ED fyziky materi\u00E1l\u016F." . . . . . "2013-02-01+01:00"^^ . . "Pressure-less sintering of crack-free advanced ceramics by extremely fast heating"@en . . " grain growth" . . "rapid sintering" . . . "Extr\u00E9mn\u011B rychl\u00E9 beztlakov\u00E9 slinov\u00E1n\u00ED pokro\u010Dil\u00E9 keramiky bez tvorby trhlin" . . . "http://www.isvav.cz/projectDetail.do?rowId=GA13-02476S"^^ . "1"^^ . "2015-04-23+02:00"^^ . " modeling" . . "2015-12-31+01:00"^^ . "1"^^ .