Transparent polycrystalline nanoceramics consisting of triclinic Al2SiO5 kyanite and Al2O3 corundum

被引：5

作者：

Gaida, Nico A. ^{[1
,2
]}

Nishiyama, Norimasa ^{[3
,4
]}

Masuno, Atsunobu ^{[5
,6
]}

Schuermann, Ulrich ^{[1
]}

Giehl, Christopher ^{[2
]}

Beermann, Oliver ^{[2
]}

Ohfuji, Hiroaki ^{[7
]}

Bednarcik, Jozef ^{[3
]}

Kulik, Eleonora ^{[3
,8
]}

Holzheid, Astrid ^{[2
]}

Irifune, Tetsuo ^{[7
,9
]}

Kienle, Lorenz ^{[1
]}

机构：

[1] Univ Kiel, Inst Mat Sci, Kiel, Germany

[2] Univ Kiel, Inst Geosci, Kiel, Germany

[3] Deutsch Elektronen Synchrotron DESY, Hamburg, Germany

[4] Tokyo Inst Technol, Lab Mat & Struct, Yokohama, Kanagawa, Japan

[5] Univ Tokyo, Inst Ind Sci, Tokyo, Japan

[6] Hirosaki Univ, Grad Sch Sci & Technol, Hirosaki, Aomori, Japan

[7] Ehime Univ, Geodynam Res Ctr, Matsuyama, Ehime, Japan

[8] Univ Bayreuth, Bayer Geoinst, Bayreuth, Germany

[9] Tokyo Inst Technol, Earth Life Sci Inst, Tokyo, Japan

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2018年 / 101卷 / 03期

关键词：

alumina; aluminosilicates; nanocomposites; transparent ceramics; CRYSTALLIZATION; FABRICATION; ALUMINA;

D O I：

10.1111/jace.15281

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 degrees 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 degrees 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.

引用

页码：998 / 1003

页数：6

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