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Description
  • V příspěvku jsou studována interakce mezi taveninou intermetalika TiAl a keramickými žáruvzdornými kelímky. Pozornost je věnována zejména mikrostruktuře odlitku a studiu interakcí na rozhraní tavenina-stěna keramického kelímku. Analýzy jsou prováděny pomocí skenovací elektronové mikroskopie (SEM) a charakteristického RTG záření metodou EDAX. K identifikaci keramických fází byla rovněž využita metoda RTG difrakce. Experimentální výsledky byly doplněny termodynamickými výpočty, zaměřenými na rovnovážné stavy chemických reakcí. Výsledky prokázaly pozitivní vliv povlaků keramické stěny tavicího kelímku na kvalitu odlitků. Práce diskutuje stabilitu povlaků, popisuje jednotlivá reakční rozhraní a pomocí kvantitativní analýzy termodynamické rovnováhy reakcí na rozhraní tavenina-kelímek vysvětluje reakční mechanismus. (cs)
  • Interactions between TiAl melt and ceramic crucibles are investigated. The attention is given mainly to reaction interfaces between the melt and ceramics, however, the microstructure of the cast alloy is also taken into account. The analysis is performed using scanning electron microscopy (SEM) and EDAX. Experimental results were compared with results of thermodynamic calculations that estimated a probability of chemical reactions at the melt-refractory interface. The results indicate that there is an influence of ceramic coatings on the cast microstructure. The detailed composition of the reaction interface and the explanation of reaction mechanisms based on thermodynamic calculations is presented.
  • Interactions between TiAl melt and ceramic crucibles are investigated. The attention is given mainly to reaction interfaces between the melt and ceramics, however, the microstructure of the cast alloy is also taken into account. The analysis is performed using scanning electron microscopy (SEM) and EDAX. Experimental results were compared with results of thermodynamic calculations that estimated a probability of chemical reactions at the melt-refractory interface. The results indicate that there is an influence of ceramic coatings on the cast microstructure. The detailed composition of the reaction interface and the explanation of reaction mechanisms based on thermodynamic calculations is presented. (en)
Title
  • Melt-crucible interactions in TiAl - refractory system - metallography analysis
  • Melt-crucible interactions in TiAl - refractory system - metallography analysis (en)
  • Interakce mezi taveninou TiAl a žáruvzdorninami - metalografická analýza (cs)
skos:prefLabel
  • Melt-crucible interactions in TiAl - refractory system - metallography analysis
  • Melt-crucible interactions in TiAl - refractory system - metallography analysis (en)
  • Interakce mezi taveninou TiAl a žáruvzdorninami - metalografická analýza (cs)
skos:notation
  • RIV/68081723:_____/07:00324613!RIV09-AV0-68081723
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika
  • -
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 432726
http://linked.open...ai/riv/idVysledku
  • RIV/68081723:_____/07:00324613
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • titanium aluminide intermetallics; ceramic crucible; coating (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • SK - Slovenská republika
http://linked.open...ontrolniKodProRIV
  • [9D366BF0B176]
http://linked.open...i/riv/nazevZdroje
  • Acta Metallurgica Slovaca
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 13
http://linked.open...iv/tvurceVysledku
  • Dlouhý, Antonín
  • Zemčík, L.
  • Dočekalová, Kateřina
http://linked.open...n/vavai/riv/zamer
issn
  • 1335-1532
number of pages
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