Synthesis, vaporization and thermodynamic properties of superfine yttrium aluminum garnet.

V.G. Sevastyanov, E.P. Simonenko, N.P. Simonenko, V.L. Stolyarova, S.I. Lopatin, V.A. Vorozhtcov, N.T. Kuznetsov

Research output

Abstract

The study of high temperature behavior of Y 3Al 5O 12 is urgently required for development of high temperature materials of the new generation including ultra-high temperature ceramics. The superfine Y 3Al 5O 12 powder was obtained by the glycol-citrate method; the aggregation process of the sample synthesized was investigated under calcination conditions at different temperatures. Using the Knudsen effusion mass spectrometric method vaporization processes and thermodynamic properties of Y 3Al 5O 12 as well as of the melts in the Y 2O 3-Al 2O 3 system were studied at temperatures higher than 2270 K. The simultaneous transition to the gaseous phase of both Al 2O 3 and Y 2O 3 from the melt under study was observed during isothermal keeping of the Y 3Al 5O 12 sample at the temperature 2675 K with the predominant alumina removal. Analysis of the values of the thermodynamic properties obtained in the Y 2O 3-Al 2O 3 system showed negative deviations from ideal behavior despite the possibility of existence of the miscibility gap at the temperature 2675 K.

Original languageEnglish
Pages (from-to)397-405
Number of pages9
JournalJournal of Alloys and Compounds
Volume764
DOIs
Publication statusPublished - 5 Oct 2018

Fingerprint

Garnets
Yttrium
Vaporization
Thermodynamic properties
Aluminum
Temperature
Glycols
Aluminum Oxide
yttrium-aluminum-garnet
Citric Acid
Powders
Calcination
Alumina
Agglomeration
Solubility

Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

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title = "Synthesis, vaporization and thermodynamic properties of superfine yttrium aluminum garnet.",
abstract = "The study of high temperature behavior of Y 3Al 5O 12 is urgently required for development of high temperature materials of the new generation including ultra-high temperature ceramics. The superfine Y 3Al 5O 12 powder was obtained by the glycol-citrate method; the aggregation process of the sample synthesized was investigated under calcination conditions at different temperatures. Using the Knudsen effusion mass spectrometric method vaporization processes and thermodynamic properties of Y 3Al 5O 12 as well as of the melts in the Y 2O 3-Al 2O 3 system were studied at temperatures higher than 2270 K. The simultaneous transition to the gaseous phase of both Al 2O 3 and Y 2O 3 from the melt under study was observed during isothermal keeping of the Y 3Al 5O 12 sample at the temperature 2675 K with the predominant alumina removal. Analysis of the values of the thermodynamic properties obtained in the Y 2O 3-Al 2O 3 system showed negative deviations from ideal behavior despite the possibility of existence of the miscibility gap at the temperature 2675 K.",
keywords = "Ceramics, High-temperature chemistry, Massspectrometry, Oxide materials, Thermodynamic properties, Vaporization",
author = "V.G. Sevastyanov and E.P. Simonenko and N.P. Simonenko and V.L. Stolyarova and S.I. Lopatin and V.A. Vorozhtcov and N.T. Kuznetsov",
year = "2018",
month = "10",
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language = "English",
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pages = "397--405",
journal = "Journal of Alloys and Compounds",
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Synthesis, vaporization and thermodynamic properties of superfine yttrium aluminum garnet. / Sevastyanov, V.G.; Simonenko, E.P.; Simonenko, N.P.; Stolyarova, V.L.; Lopatin, S.I.; Vorozhtcov, V.A.; Kuznetsov, N.T.

In: Journal of Alloys and Compounds, Vol. 764, 05.10.2018, p. 397-405.

Research output

TY - JOUR

T1 - Synthesis, vaporization and thermodynamic properties of superfine yttrium aluminum garnet.

AU - Sevastyanov, V.G.

AU - Simonenko, E.P.

AU - Simonenko, N.P.

AU - Stolyarova, V.L.

AU - Lopatin, S.I.

AU - Vorozhtcov, V.A.

AU - Kuznetsov, N.T.

PY - 2018/10/5

Y1 - 2018/10/5

N2 - The study of high temperature behavior of Y 3Al 5O 12 is urgently required for development of high temperature materials of the new generation including ultra-high temperature ceramics. The superfine Y 3Al 5O 12 powder was obtained by the glycol-citrate method; the aggregation process of the sample synthesized was investigated under calcination conditions at different temperatures. Using the Knudsen effusion mass spectrometric method vaporization processes and thermodynamic properties of Y 3Al 5O 12 as well as of the melts in the Y 2O 3-Al 2O 3 system were studied at temperatures higher than 2270 K. The simultaneous transition to the gaseous phase of both Al 2O 3 and Y 2O 3 from the melt under study was observed during isothermal keeping of the Y 3Al 5O 12 sample at the temperature 2675 K with the predominant alumina removal. Analysis of the values of the thermodynamic properties obtained in the Y 2O 3-Al 2O 3 system showed negative deviations from ideal behavior despite the possibility of existence of the miscibility gap at the temperature 2675 K.

AB - The study of high temperature behavior of Y 3Al 5O 12 is urgently required for development of high temperature materials of the new generation including ultra-high temperature ceramics. The superfine Y 3Al 5O 12 powder was obtained by the glycol-citrate method; the aggregation process of the sample synthesized was investigated under calcination conditions at different temperatures. Using the Knudsen effusion mass spectrometric method vaporization processes and thermodynamic properties of Y 3Al 5O 12 as well as of the melts in the Y 2O 3-Al 2O 3 system were studied at temperatures higher than 2270 K. The simultaneous transition to the gaseous phase of both Al 2O 3 and Y 2O 3 from the melt under study was observed during isothermal keeping of the Y 3Al 5O 12 sample at the temperature 2675 K with the predominant alumina removal. Analysis of the values of the thermodynamic properties obtained in the Y 2O 3-Al 2O 3 system showed negative deviations from ideal behavior despite the possibility of existence of the miscibility gap at the temperature 2675 K.

KW - Ceramics

KW - High-temperature chemistry

KW - Massspectrometry

KW - Oxide materials

KW - Thermodynamic properties

KW - Vaporization

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