Effect of Mn Doping on Microstructure and Thermal Conductivity of (Y0.4Er0.6)3Al5O12 Ceramics Material for Thermal Barrier Coating

被引：0
作者：
Wang J. [1 ]
Wang X. [1 ]
Liu S. [1 ]
Song R. [1 ]
Song X. [1 ]
机构：
[1] School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou
来源：
Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2024年 / 38卷 / 06期
基金：
中国国家自然科学基金;
关键词：
double-site doping; inorganic non-metallic materials; microstructure; thermal barrier coating; thermal conductivity; yttrium aluminum garnet;
D O I：
10.11901/1005.3093.2023.415
中图分类号：
学科分类号：
摘要：
Ceramic materials (Y0.4Er0.6)3(Al1 - yMny)5O12 (y = 0, 0.02, 0.04, 0.06, 0.08, 0.1) were prepared by solid phase synthesis method, and their microstructure and thermal conductivity were studied by X-ray diffractometer and Rietveld refinement method, X-ray photoelectron spectroscopy, scanning electron microscopy, X-ray energy spectroscopy, transmission electron microscopy, laser thermal conductivity tester. The results show that the ceramic materials of (Y0.4Er0.6)3(Al1 - yMny)5O12 are all single YAG phase, with the increase of Mn doping, the lattice constant and cell volume decrease and then increase, Mn2+ gradually occupies the position of Al3+ in the cell, keeping the crystal structure of Y3Al5O12 unchanged; the thermal conductivity of the ceramic material (Y0.4Er0.6)3(Al1 - yMny)5O12 is significantly reduced, with the lowest thermal conductivity at Mn doping y = 0.06, which is about 1.38 W/(m·K) at 1100oC, and reduced by about 34.6 % compared to that of the pure ceramic material YAG (2.1 W/(m·K)). © 2024 Chinese Journal of Materials Research. All rights reserved.
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页码：463 / 470
页数：7
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