Study of crystallization behavior and kinetics of yttria-50 vol% magnesia composite nanopowders using a non-isothermal process

A. Alhaji; R. Shoja Razavi; A. Ghasemi; M. R. Loghman-Estarki; S. Ghorbani

doi:10.1007/s10971-017-4520-y

Study of crystallization behavior and kinetics of yttria-50 vol% magnesia composite nanopowders using a non-isothermal process

A. Alhaji
, R. Shoja Razavi
, A. Ghasemi
, M. R. Loghman-Estarki
, S. Ghorbani

Research output: Journal Publication › Article › peer-review

6 Citations (Scopus)

Abstract

Abstract: In this paper, yttria-magnesia composite nanopowders with high specific surface area were synthesized by the sol–gel method. The crystallization kinetics of MgO–Y₂O₃ composite nanopowders were studied by the non-isothermal differential scanning calorimetry (DSC) technique. The crystallization activation energy of MgO–Y₂O₃ composite nanopowder was obtained 106.41 kJ/mol. The Avrami exponent (n) was 2.96 that corresponded to the three-dimensional growth. As-synthesized MgO–Y₂O₃ composite nanopowder had the average particle size of 10–15 nm with 140.42 m²/g specific surface area. The FESEM results showed that MgO and Y₂O₃ phases had a uniform phase distribution in the MgO–Y₂O₃ composite.

Original language	English
Pages (from-to)	93-102
Number of pages	10
Journal	Journal of Sol-Gel Science and Technology
Volume	85
Issue number	1
DOIs	https://doi.org/10.1007/s10971-017-4520-y
Publication status	Published - 1 Jan 2018
Externally published	Yes

Free Keywords

Differential scanning calorimetry
Kissinger equation
MgO–YO composite
Nonisothermal crystallization kinetics

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
General Chemistry
Biomaterials
Condensed Matter Physics
Materials Chemistry

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10.1007/s10971-017-4520-y

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title = "Study of crystallization behavior and kinetics of yttria-50 vol\% magnesia composite nanopowders using a non-isothermal process",

abstract = "Abstract: In this paper, yttria-magnesia composite nanopowders with high specific surface area were synthesized by the sol–gel method. The crystallization kinetics of MgO–Y2O3 composite nanopowders were studied by the non-isothermal differential scanning calorimetry (DSC) technique. The crystallization activation energy of MgO–Y2O3 composite nanopowder was obtained 106.41 kJ/mol. The Avrami exponent (n) was 2.96 that corresponded to the three-dimensional growth. As-synthesized MgO–Y2O3 composite nanopowder had the average particle size of 10–15 nm with 140.42 m2/g specific surface area. The FESEM results showed that MgO and Y2O3 phases had a uniform phase distribution in the MgO–Y2O3 composite.",

keywords = "Differential scanning calorimetry, Kissinger equation, MgO–YO composite, Nonisothermal crystallization kinetics",

author = "A. Alhaji and \{Shoja Razavi\}, R. and A. Ghasemi and Loghman-Estarki, \{M. R.\} and S. Ghorbani",

note = "Publisher Copyright: {\textcopyright} 2017, Springer Science+Business Media, LLC.",

year = "2018",

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day = "1",

doi = "10.1007/s10971-017-4520-y",

language = "English",

volume = "85",

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journal = "Journal of Sol-Gel Science and Technology",

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TY - JOUR

T1 - Study of crystallization behavior and kinetics of yttria-50 vol% magnesia composite nanopowders using a non-isothermal process

AU - Alhaji, A.

AU - Shoja Razavi, R.

AU - Ghasemi, A.

AU - Loghman-Estarki, M. R.

AU - Ghorbani, S.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Abstract: In this paper, yttria-magnesia composite nanopowders with high specific surface area were synthesized by the sol–gel method. The crystallization kinetics of MgO–Y2O3 composite nanopowders were studied by the non-isothermal differential scanning calorimetry (DSC) technique. The crystallization activation energy of MgO–Y2O3 composite nanopowder was obtained 106.41 kJ/mol. The Avrami exponent (n) was 2.96 that corresponded to the three-dimensional growth. As-synthesized MgO–Y2O3 composite nanopowder had the average particle size of 10–15 nm with 140.42 m2/g specific surface area. The FESEM results showed that MgO and Y2O3 phases had a uniform phase distribution in the MgO–Y2O3 composite.

AB - Abstract: In this paper, yttria-magnesia composite nanopowders with high specific surface area were synthesized by the sol–gel method. The crystallization kinetics of MgO–Y2O3 composite nanopowders were studied by the non-isothermal differential scanning calorimetry (DSC) technique. The crystallization activation energy of MgO–Y2O3 composite nanopowder was obtained 106.41 kJ/mol. The Avrami exponent (n) was 2.96 that corresponded to the three-dimensional growth. As-synthesized MgO–Y2O3 composite nanopowder had the average particle size of 10–15 nm with 140.42 m2/g specific surface area. The FESEM results showed that MgO and Y2O3 phases had a uniform phase distribution in the MgO–Y2O3 composite.

KW - Differential scanning calorimetry

KW - Kissinger equation

KW - MgO–YO composite

KW - Nonisothermal crystallization kinetics

UR - https://www.scopus.com/pages/publications/85031913396

U2 - 10.1007/s10971-017-4520-y

DO - 10.1007/s10971-017-4520-y

M3 - Article

AN - SCOPUS:85031913396

SN - 0928-0707

VL - 85

SP - 93

EP - 102

JO - Journal of Sol-Gel Science and Technology

JF - Journal of Sol-Gel Science and Technology

IS - 1

ER -

Study of crystallization behavior and kinetics of yttria-50 vol% magnesia composite nanopowders using a non-isothermal process

Abstract

Free Keywords

ASJC Scopus subject areas

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