Influence of Er3+ doping on the mechanical and thermophysical properties of (ErxY1-x)3Al5O12 ceramics-Reference-Cited by-同舟云学术

Influence of Er3+ doping on the mechanical and thermophysical properties of (ErxY1-x)3Al5O12 ceramics

Published:2023 Issue:1 Volume:17 Page:23-30
ISSN:1820-6131
Container-title:Processing and Application of Ceramics
language:en
Short-container-title:PAC

Author:

Wang Xuanli¹,Xing Jinxin²,Xie Min²,Mu Rende³,Song Xiwen²

Affiliation:

1. Inner Mongolia Key Laboratory of Advanced Ceramics and Device, School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, China + Collaborative Innovation Center of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou, China

2. Inner Mongolia Key Laboratory of Advanced Ceramics and Device, School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, China

3. Key Laboratory of Advanced Corrosion and Protection for Aviation Materials, Beijing Institute of Aeronautical Materials, Aero Engine Corporation of China, Beijing, China

Abstract

In this work, Er3+ was selected to replace Y3+ in the yttrium aluminium garnet (YAG) in order to improve its mechanical and thermophysical properties. A series of (ErxY1-x)3Al5O12 (x = 0, 0.1, 0.3, 0.5, 0.7, 0.9 and 1.0) ceramics were prepared by solid-state synthesis method at 1000 ?C and finally sintered at 1600 ?C for 5 h. The microstructure and morphology of the prepared ceramics were investigated. The results showed that all Er3+ doped Y3Al5O12 ceramics exhibited single garnet-type YAG phase and good compactness. With the increase of Er3+ doping concentration, the thermal conductivity of the (ErxY1-x)3Al5O12 ceramics decreased slowly and then increased subsequently. Among the investigated specimens, the (Er0.7Y0.3)3Al5O12 had the lowest thermal conductivity (1.51W/m?K, at 1000 ?C), which was about 28% lower than that of the pure YAG (2.1W/m?K, at 1000 ?C). As the Er3+ doping concentration increased, the thermal expansion coefficient of the (ErxY1-x)3Al5O12 ceramics hardly changed, remaining around 9.08 ? 10?6 K?1 at 1200 ?C. Moreover, when the Er3+ doping concentration exceeded 0.5, the mechanical properties of the (ErxY1-x)3Al5O12 ceramics increased suddenly. Specifically, the hardness increased from 14.28 to 16.53GPa and the bending strength increased from 231.74 to 324.49MPa.

Publisher

National Library of Serbia

Subject

Ceramics and Composites

Reference23 articles.

1. J.J. Yan, G. Yan, H.Y. Chen, Z.Y. Liu, L. Yang, Y.C. Zhou, “Real-time detection of damage evolution and failure of EB-PVD thermal barrier coatings using an environmental simulator with high-temperature and high-speed rotation”, Surface Coat. Technol., 439 (2022) 128416.

2. Z. Meng, Y. Liu, Y. Li, X. He, “The performance evaluation for thermal protection of turbine vane with film cooling and thermal barrier coating”, Appl. Therm. Eng., 210 (2022) 118405.

3. Z. Shen, Z. Liu, G. Liu, L. He, R. Mu, Z. Xu, “The morphology, thermal property, and failure mechanism of GdNdZrO thermal barrier coatings by EB-PVD”, Int. J. Appl. Ceram. Tec., 18 (2021) 1623-1629.

4. P. Zhao, H. Zheng, G. Li, Y. Geng, Y. Xiao, H. Guo, P. Peng, “Mechanical properties, thermophysical properties and electronic structure of Yb3+ or Ce4+-doped La2Zr2O7 based TBCs”, J. Rare Earth., 41 (2023) 588-598.

5. F. Zhou, Y. Wang, M. Liu, C. Deng, Y. Li, Y. Wang, X. Zhang, “Bonding strength and thermal conductivity of novel nanostructured La2(Zr0.75Ce0.25)2O7/8YSZ coatings”, Appl. Surf. Sci., 481 (2019) 460-465.