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.
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页码：998 / 1003
页数：6
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