On the effects of LiF on the synthesis and reactive sintering of gahnite (ZnAl2O4)

Maxim Sokol; Shay Meir; Einat Strumza; Sergey Kalabukhov; Shmuel Hayun; Nachum Frage

doi:10.1016/j.ceramint.2017.08.005

On the effects of LiF on the synthesis and reactive sintering of gahnite (ZnAl₂O₄)

Department of Materials Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The effects of LiF on the synthesis and reactive sintering of polycrystalline gahnite (zinc aluminate spinel, ZnAl₂O₄) were studied using XRD, high-temperature simultaneous thermal analysis and a spark plasma sintering (SPS) apparatus. It was demonstrated that the LiF reduces the onset of synthesis by about 200 °C and plays an important role in the densification process. SPS consolidation of a LiF-doped ZnO-Al₂O₃ mixture under an applied pressure of 150 MPa and at a sintering temperature of 1100 °C for 20 min generated fully dense gahnite with adequate transparency and mechanical properties.

Original language	English
Pages (from-to)	14891-14896
Number of pages	6
Journal	Ceramics International
Volume	43
Issue number	17
DOIs	https://doi.org/10.1016/j.ceramint.2017.08.005
State	Published - 1 Dec 2017

Keywords

Gahnite
Mechanical properties
Reactive sintering synthesis
Spark plasma sintering
Transparency

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.ceramint.2017.08.005

Cite this

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title = "On the effects of LiF on the synthesis and reactive sintering of gahnite (ZnAl2O4)",

abstract = "The effects of LiF on the synthesis and reactive sintering of polycrystalline gahnite (zinc aluminate spinel, ZnAl2O4) were studied using XRD, high-temperature simultaneous thermal analysis and a spark plasma sintering (SPS) apparatus. It was demonstrated that the LiF reduces the onset of synthesis by about 200 °C and plays an important role in the densification process. SPS consolidation of a LiF-doped ZnO-Al2O3 mixture under an applied pressure of 150 MPa and at a sintering temperature of 1100 °C for 20 min generated fully dense gahnite with adequate transparency and mechanical properties.",

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T1 - On the effects of LiF on the synthesis and reactive sintering of gahnite (ZnAl2O4)

AU - Sokol, Maxim

AU - Meir, Shay

AU - Strumza, Einat

AU - Kalabukhov, Sergey

AU - Hayun, Shmuel

AU - Frage, Nachum

PY - 2017/12/1

Y1 - 2017/12/1

N2 - The effects of LiF on the synthesis and reactive sintering of polycrystalline gahnite (zinc aluminate spinel, ZnAl2O4) were studied using XRD, high-temperature simultaneous thermal analysis and a spark plasma sintering (SPS) apparatus. It was demonstrated that the LiF reduces the onset of synthesis by about 200 °C and plays an important role in the densification process. SPS consolidation of a LiF-doped ZnO-Al2O3 mixture under an applied pressure of 150 MPa and at a sintering temperature of 1100 °C for 20 min generated fully dense gahnite with adequate transparency and mechanical properties.

AB - The effects of LiF on the synthesis and reactive sintering of polycrystalline gahnite (zinc aluminate spinel, ZnAl2O4) were studied using XRD, high-temperature simultaneous thermal analysis and a spark plasma sintering (SPS) apparatus. It was demonstrated that the LiF reduces the onset of synthesis by about 200 °C and plays an important role in the densification process. SPS consolidation of a LiF-doped ZnO-Al2O3 mixture under an applied pressure of 150 MPa and at a sintering temperature of 1100 °C for 20 min generated fully dense gahnite with adequate transparency and mechanical properties.

KW - Gahnite

KW - Mechanical properties

KW - Reactive sintering synthesis

KW - Spark plasma sintering

KW - Transparency

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DO - 10.1016/j.ceramint.2017.08.005

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