无机材料学报2021，Vol.36Issue(6)：652-658,7.DOI:10.15541/jim20200508
光悬浮区熔定向凝固Al2O3/Er3Al5O12和Al2O3/Yb3Al5O12共晶陶瓷的制备与性能研究
Directionally Solidified Al2O3/Er3Al5O12 and Al2O3/Yb3Al5O12 Eutectic Ceramics Prepared by Optical Floating Zone Melting
摘要
Abstract
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·m1/2, respectively.关键词
定向凝固/共晶陶瓷/显微结构/力学性能Key words
directional solidification/eutectic ceramic/microstructure/mechanical property分类
化学化工引用本文复制引用
孙鲁超,周翠,杜铁锋,吴贞,雷一明,李家麟,苏海军,王京阳..光悬浮区熔定向凝固Al2O3/Er3Al5O12和Al2O3/Yb3Al5O12共晶陶瓷的制备与性能研究[J].无机材料学报,2021,36(6):652-658,7.基金项目
The State Key Laboratory of Solidification Processing(Northwestern Polytechnical University)(SKLSP201909) （Northwestern Polytechnical University）
National Science and Technology Major Project(2017-VI-0020-0093) （2017-VI-0020-0093）
National Natural Science Foundation of China(51772302) （51772302）
International Cooperation Key Program(174321KYSB20180008) （174321KYSB20180008）
