Termodynamická predikce složení plasmově stříkaných povlaků ZrO2-CaO

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F05%3A00014071" target="_blank" >RIV/60461373:22310/05:00014071 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Thermodynamic prediction of composition of calcia-stabilised zirconia plasma-sprayed coatings

Popis výsledku v původním jazyce

Plasma-sprayed zirconia-based coatings are of great interest due to their excellent mechanical and thermal properties. This contribution is focused on thermodynamic aspects of the plasma-spraying of calcia-stabilized zirconia. The thermodynamic analysisof the system Zr-Ca-O-N was performed. The Gibbs energy minimization method was used for calculations of equilibrium composition of this system in the temperature range of 1000 - 4000 K. The gaseous phase consists of 11 species (Ca, Ca2, CaO, Zr, ZrO, ZrO2, ZrN, O, O2, N and N2), the oxide melt CaO-ZrO2, cubic and tetragonal solid solutions CaO-ZrO2 and pure solid substances ZrO2(monoclinic), CaO, CaZrO3, Ca6Zr19O44 and ZrN were included into the calculations. Calculated results reveal that the calcium-containing gaseous species are more stable than those of zirconium and the ratio of Ca/Zr in condensed phases (solid or liquid) is less than this ratio in input feedstock powder. So CaZrO3 and cubic solid solution CaO-ZrO2 represent the e

Název v anglickém jazyce

Thermodynamic prediction of composition of calcia-stabilised zirconia plasma-sprayed coatings

Popis výsledku anglicky

Plasma-sprayed zirconia-based coatings are of great interest due to their excellent mechanical and thermal properties. This contribution is focused on thermodynamic aspects of the plasma-spraying of calcia-stabilized zirconia. The thermodynamic analysisof the system Zr-Ca-O-N was performed. The Gibbs energy minimization method was used for calculations of equilibrium composition of this system in the temperature range of 1000 - 4000 K. The gaseous phase consists of 11 species (Ca, Ca2, CaO, Zr, ZrO, ZrO2, ZrN, O, O2, N and N2), the oxide melt CaO-ZrO2, cubic and tetragonal solid solutions CaO-ZrO2 and pure solid substances ZrO2(monoclinic), CaO, CaZrO3, Ca6Zr19O44 and ZrN were included into the calculations. Calculated results reveal that the calcium-containing gaseous species are more stable than those of zirconium and the ratio of Ca/Zr in condensed phases (solid or liquid) is less than this ratio in input feedstock powder. So CaZrO3 and cubic solid solution CaO-ZrO2 represent the e

Druh

O - Ostatní výsledky

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA106%2F03%2F0710" target="_blank" >GA106/03/0710: Změny složení keramických a kovových materiálů při jejich plazmovém stříkání</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2005

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů