Journal Home > Volume 9 , Issue 3
Journal of Advanced Ceramics 2020, 9(3): 303-311 https://doi.org/10.1007/s40145-020-0368-7
Research Article | Open Access | Issue | Published: 05 June 2020

High entropy defective fluorite structured rare-earth niobates and tantalates for thermal barrier applications

Show Author's Information Zifan ZHAOa,b,  Heng CHENa,  Huimin XIANGa,  Fu-Zhi DAIa,  Xiaohui WANGc,  Wei XUd,  Kuang SUNd,  Zhijian PENGb( ),  Yanchun ZHOUa( )
Science and Technology on Advanced Functional Composite Laboratory, Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China
School of Engineering and Technology, China University of Geosciences, Beijing 100083, China
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Shanghai Chenhua Science and Technology Corporation Ltd., Shanghai 201804, China
Keywords:
high entropy ceramics, defective fluorite structure, rare-earth niobates/tantalates, thermal barrier coating material
Cite this article:
ZHAO Z, CHEN H, XIANG H, et al. High entropy defective fluorite structured rare-earth niobates and tantalates for thermal barrier applications. Journal of Advanced Ceramics, 2020, 9(3): 303-311. https://doi.org/10.1007/s40145-020-0368-7
Download citation
EndNote(RIS)
BibTeX

1112

Views

214

Downloads

Citations

132

Crossref

N/A

WoS

129

Scopus

35

CSCD

Abstract Full text About this article

Rare-earth tantalates and niobates (RE3TaO7 and RE3NbO7) have been considered as promising candidate thermal barrier coating (TBC) materials in next generation gas-turbine engines due to their ultra-low thermal conductivity and better thermal stability than yttria-stabilized zirconia (YSZ). However, the low Vickers hardness and toughness are the main shortcomings of RE3TaO7 and RE3NbO7 that limit their applications as TBC materials. To increase the hardness, high entropy (Y1/3Yb1/3Er1/3)3TaO7, (Y1/3Yb1/3Er1/3)3NbO7, and (Sm1/6Eu1/6Y1/6Yb1/6Lu1/6Er1/6)3(Nb1/2Ta1/2)O7 are designed and synthesized in this study. These high entropy ceramics exhibit high Vickers hardness (10.9-12.0 GPa), close thermal expansion coefficients to that of single-principal-component RE3TaO7 and RE3NbO7 (7.9×10-6-10.8×10-6 ℃-1 at room temperature), good phase stability, and good chemical compatibility with thermally grown Al2O3, which make them promising for applications as candidate TBC materials.


menu
Abstract
Full text
Outline
About this article

High entropy defective fluorite structured rare-earth niobates and tantalates for thermal barrier applications

Show Author's information Zifan ZHAOa,b, Heng CHENa, Huimin XIANGa, Fu-Zhi DAIa, Xiaohui WANGc, Wei XUd, Kuang SUNd, Zhijian PENGb( ), Yanchun ZHOUa( )
Science and Technology on Advanced Functional Composite Laboratory, Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China
School of Engineering and Technology, China University of Geosciences, Beijing 100083, China
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Shanghai Chenhua Science and Technology Corporation Ltd., Shanghai 201804, China

Abstract

Rare-earth tantalates and niobates (RE3TaO7 and RE3NbO7) have been considered as promising candidate thermal barrier coating (TBC) materials in next generation gas-turbine engines due to their ultra-low thermal conductivity and better thermal stability than yttria-stabilized zirconia (YSZ). However, the low Vickers hardness and toughness are the main shortcomings of RE3TaO7 and RE3NbO7 that limit their applications as TBC materials. To increase the hardness, high entropy (Y1/3Yb1/3Er1/3)3TaO7, (Y1/3Yb1/3Er1/3)3NbO7, and (Sm1/6Eu1/6Y1/6Yb1/6Lu1/6Er1/6)3(Nb1/2Ta1/2)O7 are designed and synthesized in this study. These high entropy ceramics exhibit high Vickers hardness (10.9-12.0 GPa), close thermal expansion coefficients to that of single-principal-component RE3TaO7 and RE3NbO7 (7.9×10-6-10.8×10-6 ℃-1 at room temperature), good phase stability, and good chemical compatibility with thermally grown Al2O3, which make them promising for applications as candidate TBC materials.

Keywords: high entropy ceramics, defective fluorite structure, rare-earth niobates/tantalates, thermal barrier coating material

References(39)

[1]
NP Padture. Thermal barrier coatings for gas-turbine engine applications. Science 2002, 296: 280-284.
DOI Google Scholar
[2]
AG Evans, DR Mumm, JW Hutchinson, et al. Mechanisms controlling the durability of thermal barrier coatings. Prog Mater Sci 2001, 46: 505-553.
DOI Google Scholar
[3]
RA Miller. Current status of thermal barrier coatings—An overview. Surf Coat Technol 1987, 30: 1-11.
DOI Google Scholar
[4]
SM Meier, DK Gupta, KD Sheffler. Ceramic thermal barrier coatings for commercial gas turbine engines. JOM 1991, 43: 50-53.
DOI Google Scholar
[5]
DR Clarke, M Oechsner, NP Padture. Thermal-barrier coatings for more efficient gas-turbine engines. MRS Bull 2012, 37: 891-898.
DOI Google Scholar
[6]
B Liu, YC Liu, CH Zhu, et al. Advances on strategies for searching for next generation thermal barrier coating materials. J Mater Sci Technol 2019, 35: 833-851.
DOI Google Scholar
[7]
XQ Cao, R Vassen, D Stoever. Ceramic materials for thermal barrier coatings. J Eur Ceram Soc 2004, 24: 1-10.
DOI Google Scholar
[8]
F Cernuschi, P Bianchi, M Leoni, et al. Thermal diffusivity/microstructure relationship in Y-PSZ thermal barrier coatings. J Therm Spray Technol 1999, 8: 102-109.
DOI Google Scholar
[9]
R Vassen, F Tietz, G Kerkhoff, et al. New materials for advanced thermal barrier coatings. In Proceedings of the 6th Liége Conference on Materials for Advanced Power Engineering. Liége, Belgium: Universite de Liége press, 1998: 1635.
[10]
JS Wallace, J Ilavsky. Elastic modulus measurements in plasma sprayed deposits. J Therm Spray Technol 1998, 7: 521-526.
DOI Google Scholar
[11]
XR Ren, W Pan. Mechanical properties of high-temperature- degraded yttria-stabilized zirconia. Acta Mater 2014, 69: 397-406.
DOI Google Scholar
[12]
AJ Slifka, BJ Filla, JM Phelps, et al. Thermal conductivity of a zirconia thermal barrier coating. J Therm Spray Tech 1998, 7: 43-46.
DOI Google Scholar
[13]
JR Brandon, R Taylor. Phase stability of zirconia-based thermal barrier coatings part I. Zirconia-yttria alloys. Surf Coat Technol 1991, 46: 75-90.
DOI Google Scholar
[14]
XQ Cao, JY Li, XH Zhong, et al. La2(Zr0.7Ce0.3)2O7 — A new oxide ceramic material with high sintering-resistance. Mater Lett 2008, 62: 2667-2669.
DOI Google Scholar
[15]
R Vassen, XQ Cao, F Tietz, et al. Zirconates as new materials for thermal barrier coatings. J Am Ceram Soc 2004, 83: 2023-2028.
DOI Google Scholar
[16]
J Yang, X Qian, W Pan, et al. Diffused lattice vibration and ultralow thermal conductivity in the binary ln-Nb-O oxide system. Adv Mater 2019: 1808222.
DOI Google Scholar
[17]
L Chen, MY Hu, FS Wu, et al. Thermo-mechanical properties of fluorite Yb3TaO7 and Yb3NbO7 ceramics with glass-like thermal conductivity. J Alloys Compd 2019, 788: 1231-1239.
DOI Google Scholar
[18]
M Wakeshima, H Nishimine, Y Hinatsu. Crystal structures and magnetic properties of rare earth tantalates RE3TaO7(RE = rare earths). J Phys: Condens Matter 2004, 16: 4103-4120.
DOI Google Scholar
[19]
M Wakeshima, Y Hinatsu. Magnetic properties and structural transitions of orthorhombic fluorite-related compounds Ln3MO7 (Ln=rare earths, M=transition metals). J Solid State Chem 2010, 183: 2681-2688.
DOI Google Scholar
[20]
L Cai, JC Nino. Structure and dielectric properties of Ln3NbO7 (Ln = Nd, Gd, Dy, Er, Yb and Y). J Eur Ceram Soc 2007, 27: 3971-3976.
DOI Google Scholar
[21]
Y Doi, Y Harada, Y Hinatsu. Crystal structures and magnetic properties of fluorite-related oxides Ln3NbO7 (Ln=lanthanides). J Solid State Chem 2009, 182: 709-715.
DOI Google Scholar
[22]
J Yang, W Pan, Y Han, et al. Mechanical properties, oxygen barrier property, and chemical stability of RE3NbO7 or thermal barrier coating. J Am Ceram Soc 2020, 103: 2302-2308.
DOI Google Scholar
[23]
L Chen, P Wu, P Song, et al. Potential thermal barrier coating materials: RE3NbO7 (RE =La, Nd, Sm, Eu, Gd, Dy) ceramics. J Am Ceram Soc 2018, 101: 4503-4508.
DOI Google Scholar
[24]
M Zhao, XR Ren, J Yang, et al. Thermo-mechanical properties of ThO2-doped Y2O3 stabilized ZrO2 for thermal barrier coatings. Ceram Int 2016, 42: 501-508.
DOI Google Scholar
[25]
L Chen, P Wu, J Feng. Optimization thermophysical properties of TiO2 alloying Sm3TaO7 ceramics as promising thermal barrier coatings. Int J Appl Ceram Technol 2019, 16: 230-242.
DOI Google Scholar
[26]
CM Rost, E Sachet, T Borman, et al. Entropy-stabilized oxides. Nat Commun 2015, 6: 8485.
DOI Google Scholar
[27]
KP Chen, XT Pei, L Tang, et al. A five-component entropy-stabilized fluorite oxide. J Eur Ceram Soc 2018, 38: 4161-4164.
DOI Google Scholar
[28]
DB Miracle, ON Senkov. A critical review of high entropy alloys and related concepts. Acta Mater 2017, 122: 448-511.
DOI Google Scholar
[29]
Y Dong, K Ren, YH Lu, et al. High-entropy environmental barrier coating for the ceramic matrix composites. J Eur Ceram Soc 2019, 39: 2574-2579.
DOI Google Scholar
[30]
XL Yan, L Constantin, YF Lu, et al. (Hf0.2Zr0.2Ta0.2Nb0.2Ti0.2)C high-entropy ceramics with low thermal conductivity. J Am Ceram Soc 2018, 101: 4486-4491.
DOI Google Scholar
[31]
H Chen, HM Xiang, FZ Dai, et al. Porous high entropy (Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)B2: A novel strategy towards making ultrahigh temperature ceramics thermal insulating. J Mater Sci Technol 2019, 35: 2404-2408.
Google Scholar
[32]
H Chen, HM Xiang, FZ Dai, et al. High porosity and low thermal conductivity high entropy (Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)C. J Mater Sci Technol 2019, 35: 1700-1705.
Google Scholar
[33]
ZF Zhao, HM Xiang, FZ Dai, et al. (TiZrHf)P2O7: An equimolar multicomponent or high entropy ceramic with good thermal stability and low thermal conductivity. J Mater Sci Technol 2019, 35: 2227-2231.
DOI Google Scholar
[34]
ZF Zhao, H Chen, HM Xiang, et al. (La0.2Ce0.2Nd0.2Sm0.2Eu0.2) PO4: A high-entropy rare-earth phosphate monazite ceramic with low thermal conductivity and good compatibility with Al2O3. J Mater Sci Technol 2019, 35: 2892-2896.
Google Scholar
[35]
ZF Zhao, HM Xiang, FZ Dai, et al. (La0.2Ce0.2Nd0.2Sm0.2Eu0.2)2 Zr2O7: A novel high-entropy ceramic with low thermal conductivity and sluggish grain growth rate. J Mater Sci Technol 2019, 35: 2647-2651.
Google Scholar
[36]
ZF Zhao, H Chen, HM Xiang, et al. (Y0.25Yb0.25Er0.25Lu0.25)2 (Zr0.5Hf0.5)2O7: A defective fluorite structured high entropy ceramic with low thermal conductivity and close thermal expansion coefficient to Al2O3. J Mater Sci Technol 2020, 39: 167-172.
Google Scholar
[37]
JW Yeh, SY Chang, YD Hong, et al. Anomalous decrease in X-ray diffraction intensities of Cu-Ni-Al-Co-Cr-Fe-Si alloy systems with multi-principal elements. Mater Chem Phys 2007, 103: 41-46.
DOI Google Scholar
[38]
JW Yeh, SK Chen, SJ Lin, et al. Nanostructured high- entropy alloys with multiple principal elements: Novel alloy design concepts and outcomes. Adv Eng Mater 2004, 6: 299-303.
DOI Google Scholar
[39]
M Razeghi. Fundamentals of Solid State Engineering. Cham, Switzerland: Springer International Publishing, 2019.
DOI
Publication history
Copyright
Acknowledgements
Rights and permissions

Publication history

Received: 22 January 2020
Revised: 14 February 2020
Accepted: 15 February 2020
Published: 05 June 2020
Issue date: June 2020

Copyright

© The Author(s) 2020

Acknowledgements

This study was financially supported by the National Natural Science Foundation of China (Nos. 51672064 and 51972089).

Rights and permissions

This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.

To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

Return