Transparent polycrystalline nanoceramics consisting of triclinic Al2SiO5 kyanite and Al2O3 corundum

Nico A. Gaida; Norimasa Nishiyama; Atsunobu Masuno; Ulrich Schürmann; Christopher Giehl; Oliver Beermann; Hiroaki Ohfuji; Jozef Bednarcik; Eleonora Kulik; Astrid Holzheid; Tetsuo Irifune; Lorenz Kienle

doi:10.1111/jace.15281

Transparent polycrystalline nanoceramics consisting of triclinic Al₂SiO₅ kyanite and Al₂O₃ corundum

Nico A. Gaida, Norimasa Nishiyama, Atsunobu Masuno, Ulrich Schürmann, Christopher Giehl, Oliver Beermann, Hiroaki Ohfuji, Jozef Bednarcik, Eleonora Kulik, Astrid Holzheid, Tetsuo Irifune, Lorenz Kienle

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

6 Citations (Scopus)

Abstract

Transparent polycrystalline nanoceramics consisting of triclinic Al₂SiO₅ kyanite (91.4 vol%) and Al₂O₃ corundum (8.6 vol%) were fabricated at 10 GPa and 1200-1400°C. These materials were obtained by direct conversion from Al₂O₃-SiO₂ glasses fabricated using the aerodynamic levitation technique. The material obtained at 10 GPa and 1200°C shows the highest optical transparency with a real in-line transmission value of 78% at a wavelength of 645 nm and a sample-thickness of 0.8 mm. This sample shows equigranular texture with an average grain size of 34 ± 13 nm. The optical transparency increases with decreasing mean grain size of the constituent phases. The relationship between real in-line transmission and grain size is well explained by a grain-boundary scattering model based on a classical theory.

Original language	English
Pages (from-to)	998-1003
Number of pages	6
Journal	Journal of the American Ceramic Society
Volume	101
Issue number	3
DOIs	https://doi.org/10.1111/jace.15281
Publication status	Published - 2018 Mar
Externally published	Yes

Keywords

alumina
aluminosilicates
nanocomposites
transparent ceramics

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1111/jace.15281

Cite this

@article{18d3aac914024d688e76af5144ece9f7,

title = "Transparent polycrystalline nanoceramics consisting of triclinic Al2SiO5 kyanite and Al2O3 corundum",

abstract = "Transparent polycrystalline nanoceramics consisting of triclinic Al2SiO5 kyanite (91.4 vol%) and Al2O3 corundum (8.6 vol%) were fabricated at 10 GPa and 1200-1400°C. These materials were obtained by direct conversion from Al2O3-SiO2 glasses fabricated using the aerodynamic levitation technique. The material obtained at 10 GPa and 1200°C shows the highest optical transparency with a real in-line transmission value of 78% at a wavelength of 645 nm and a sample-thickness of 0.8 mm. This sample shows equigranular texture with an average grain size of 34 ± 13 nm. The optical transparency increases with decreasing mean grain size of the constituent phases. The relationship between real in-line transmission and grain size is well explained by a grain-boundary scattering model based on a classical theory.",

keywords = "alumina, aluminosilicates, nanocomposites, transparent ceramics",

author = "Gaida, {Nico A.} and Norimasa Nishiyama and Atsunobu Masuno and Ulrich Sch{\"u}rmann and Christopher Giehl and Oliver Beermann and Hiroaki Ohfuji and Jozef Bednarcik and Eleonora Kulik and Astrid Holzheid and Tetsuo Irifune and Lorenz Kienle",

note = "Funding Information: We thank H. Hosono, F. Wakai, H. Yamane, S. Yamaguchi, S. Tsuneyuki, and T. Taniguchi for helpful discussions. S. Sonntag, C. Szillus, S. Shree, M. Thoner, and B. Ledwig are appreciated for technical assistance. We are grateful to E. Weckert and W. Drube for encouragement during this study. This research was supported by a scholarship for PhD candidates, Federal State Funding at Kiel University and by JST, PRESTO, New Materials Science and Element Strategy granted to N.N. Publisher Copyright: {\textcopyright} 2017 The American Ceramic Society",

year = "2018",

month = mar,

doi = "10.1111/jace.15281",

language = "English",

volume = "101",

pages = "998--1003",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

number = "3",

}

TY - JOUR

T1 - Transparent polycrystalline nanoceramics consisting of triclinic Al2SiO5 kyanite and Al2O3 corundum

AU - Gaida, Nico A.

AU - Nishiyama, Norimasa

AU - Masuno, Atsunobu

AU - Schürmann, Ulrich

AU - Giehl, Christopher

AU - Beermann, Oliver

AU - Ohfuji, Hiroaki

AU - Bednarcik, Jozef

AU - Kulik, Eleonora

AU - Holzheid, Astrid

AU - Irifune, Tetsuo

AU - Kienle, Lorenz

N1 - Funding Information: We thank H. Hosono, F. Wakai, H. Yamane, S. Yamaguchi, S. Tsuneyuki, and T. Taniguchi for helpful discussions. S. Sonntag, C. Szillus, S. Shree, M. Thoner, and B. Ledwig are appreciated for technical assistance. We are grateful to E. Weckert and W. Drube for encouragement during this study. This research was supported by a scholarship for PhD candidates, Federal State Funding at Kiel University and by JST, PRESTO, New Materials Science and Element Strategy granted to N.N. Publisher Copyright: © 2017 The American Ceramic Society

PY - 2018/3

Y1 - 2018/3

N2 - Transparent polycrystalline nanoceramics consisting of triclinic Al2SiO5 kyanite (91.4 vol%) and Al2O3 corundum (8.6 vol%) were fabricated at 10 GPa and 1200-1400°C. These materials were obtained by direct conversion from Al2O3-SiO2 glasses fabricated using the aerodynamic levitation technique. The material obtained at 10 GPa and 1200°C shows the highest optical transparency with a real in-line transmission value of 78% at a wavelength of 645 nm and a sample-thickness of 0.8 mm. This sample shows equigranular texture with an average grain size of 34 ± 13 nm. The optical transparency increases with decreasing mean grain size of the constituent phases. The relationship between real in-line transmission and grain size is well explained by a grain-boundary scattering model based on a classical theory.

AB - Transparent polycrystalline nanoceramics consisting of triclinic Al2SiO5 kyanite (91.4 vol%) and Al2O3 corundum (8.6 vol%) were fabricated at 10 GPa and 1200-1400°C. These materials were obtained by direct conversion from Al2O3-SiO2 glasses fabricated using the aerodynamic levitation technique. The material obtained at 10 GPa and 1200°C shows the highest optical transparency with a real in-line transmission value of 78% at a wavelength of 645 nm and a sample-thickness of 0.8 mm. This sample shows equigranular texture with an average grain size of 34 ± 13 nm. The optical transparency increases with decreasing mean grain size of the constituent phases. The relationship between real in-line transmission and grain size is well explained by a grain-boundary scattering model based on a classical theory.

KW - alumina

KW - aluminosilicates

KW - nanocomposites

KW - transparent ceramics

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