Growth of MgAl2O4/MgO eutectic crystals by the micro-pulling-down method and its characterization

被引：22

作者：

Lee, JH ^{[1
]}

Yoshikawa, A ^{[1
]}

Fukuda, T ^{[1
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2005年 / 25卷 / 08期

关键词：

microstructure; MgAl2O4/MgO eutectic crystal; electron microscopy; optical properties; functional applications;

D O I：

10.1016/j.jeurceramsoc.2005.01.032

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：

MgAl2O4/MgO eutectic fibers and rods have been grown successfully by the micro-pulling-down method, and the microstructures and optical characterizations of grown crystals were performed. MgAl2O4/MgO eutectic fibers of 0.3-1 mm in diameter and about 500mm in length, and the rods having 5 mm in diameter with approximately 60 nun in length have been grown with the 6-120 mm/h of growth speed. The eutectic fibers showed homogeneous microstructure in which MgO fiber/whisker aligned to the growth direction in the MgAl2O4 (spinel) matrix. The grown crystals looked se an transparence Under naked eyes. Optical and orientational characterizations were performed. The second phase of MgO was easily removed by selective etching with hydrochloric acid, and then porous single crystalline bodies were obtained. © 2005 Elsevier Ltd. All rights reserved.

引用

页码：1351 / 1354

页数：4

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