Tailoring the morphology in Y2O3 doped melt-grown Al2O3/ZrO2 eutectic ceramic

被引：36
|
作者：
Fu, Liansheng [1 ]
Fu, Xuesong [1 ]
Chen, Guoqing [1 ]
Han, Wen-bo [2 ]
Zhou, Wenlong [1 ]
机构：
[1] Dalian Univ Technol, Sch Mat Sci & Technol, 2 Linggong Rd, Dalian 116085, Peoples R China
[2] Harbin Inst Technol, Natl Key Lab Sci & Technol Adv Composites Special, Harbin 150080, Peoples R China
来源：
SCRIPTA MATERIALIA | 2017年 / 129卷
基金：
中国国家自然科学基金;
关键词：
Eutectic ceramic; Al2O3/ZrO2(Y2O3); Crystal growth; Constitutional supercooling; FLOATING-ZONE METHOD; MECHANICAL-PROPERTIES; 1900; K; AL2O3-ZRO2(Y2O3) EUTECTICS; MICROSTRUCTURE; FIBERS; COMPOSITES; BEHAVIOR; SOLIDIFICATION; STRENGTH;
D O I：
10.1016/j.scriptamat.2016.10.024
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The addition of more components are an interesting way of the microstructural controls. Herein, adding Y2O3 to Al2O3-ZrO2 bulk eutectic at the low G/v ratio (thermal gradient G divided by growth rate v) was adopted to tailor the morphology. As the Y2O3 content increases, the solidification structure changes obviously from cellular into the, dendritic shape. Especially, a typical irregular Al2O3/ZrO2/Y3Al5O12 (YAG) ternary eutectic appeared in the inter -colony region for the higher Y2O3 content. This microstructure transition is consistent with the classical constitutional supercooling criterion. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：20 / 24
页数：5
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