Directionally Solidified Al2O3/Er3Al5O12 and Al2O3/Yb3Al5O12 Eutectic Ceramics Prepared by Optical Floating Zone Melting

被引：6
|
作者：
Sun Luchao [1 ]
Zhou Cui [1 ,2 ]
Du Tiefeng [1 ]
Wu Zhen [1 ]
Lei Yiming [1 ,2 ]
Li Jialin [1 ]
Su Haijun [3 ]
Wang Jingyang [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
[3] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
来源：
JOURNAL OF INORGANIC MATERIALS | 2021年 / 36卷 / 06期
基金：
中国国家自然科学基金;
关键词：
directional solidification; eutectic ceramic; microstructure; mechanical property; HIGH-TEMPERATURE STRENGTH; MECHANICAL-PROPERTIES; COMPOSITE; GROWTH; BEHAVIOR; MICROSTRUCTURES; DEFORMATION; GENERATION; STABILITY; EMISSION;
D O I：
10.15541/jim20200508
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：
Al2O3/Er3Al5O12(ErAG) and Al2O3/Yb3Al5O12(YbAG) eutectic rods with fine and homogeneous microstructure, free from cracks or pores, were directionally solidified using optical floating zone method at growth rate of 10 mm/ h. The crystallographic orientation, preferred orientation, and 3D distribution of Al2O3 and Er3Al5O12/Yb3Al5O12 phases in the terminal growth zone of Al2O3/ErAG and Al2O3/YbAG eutectics were investigated by EBSD and high-resolution X-ray microscope. Vickers hardness of the as-prepared Al2O3/ErAG and Al2O3/ YbAG eutectics are determined as (13.5 +/- 0.4) and (12.8 +/- 0.1) GPa, respectively. The fracture toughness results of Al2O3/ErAG and Al2O3/YbAG are (3.0 +/- 0.2) and (3.2 +/- 0.1) MPa.m(1/2), respectively.
引用
收藏
页码：652 / 658
页数：7
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