AI Chat Paper
Note: Please note that the following content is generated by AMiner AI. SciOpen does not take any responsibility related to this content.
{{lang === 'zh_CN' ? '文章概述' : 'Summary'}}
{{lang === 'en_US' ? '中' : 'Eng'}}
Chat more with AI
Powered by AMiner. Clicking this button will take you away from SciOpen.
Home Journal of Advanced Ceramics Article
PDF (2.2 MB)
Cite
EndNote(RIS) BibTeX
Collect
Submit Manuscript AI Chat Paper
Show Outline
Outline
Show full outline
Hide outline
Outline
Show full outline
Hide outline
Research Article | Open Access

Mechanical property enhancements and amorphous thermal transports of ordered weberite-type RE3Nb/TaO7 high-entropy oxides

Lin Chena, Keren Luoa, Baihui Lia, Mingyu Hub( ), Jing Fenga( )
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
Peking University Shenzhen Graduate School, Shenzhen 518055, China
Show Author Information

Graphical Abstract

Abstract

A3BO7-type (A = rare earth (RE), B = Nb or Ta) oxides have been studied as protective coating materials because of their low thermal conductivity; however, their hardness, toughness, and stiffness are insufficient, particularly for members with webeirte-type structures. In this work, we have synthesized two high-entropy oxides (HEOs) of weberite-type RE niobates/tantalates (RE3Nb/TaO7), i.e., (Nd1/7Sm1/7Eu1/7Gd1/7Dy1/7Ho1/7Er1/7)3NbO7 (7HEOs-Nb) and (Nd1/7Sm1/7Eu1/7Gd1/7Dy1/7Ho1/7Er1/7)3(Nb1/2Ta1/2)O7 (7HEOs-NbTa), to overcome the mechanical deficiencies. The short- and long-range ordered arrangements of RE cations in the A-site and Nb/Ta cations in the B-site were identified by the X-ray diffraction (XRD), scanning electron microscopy equipped with energy-dispersive spectrometry (EDS), and transmission electron microscopy. The enhancements in hardness (H = 9.4 GPa) and fracture toughness (KIC = 2.0 MPa·m1/2) were realized by grain refinement, solid solution strengthening, and high stiffness (K). The exceptional phase stability at 25−1500 ℃, amorphous thermal conductivity (k = 1.5−1.7 W·m−1·K−1 at 25−900 ℃), and high thermal expansion coefficients (TEC > 11.0×10−6 K−1 at 1500 ℃) further supported their potential application as protective coating materials.

Keywords

high-entropy oxides (HEOs)RE niobates/tantalates (RE3Nb/TaO7)stiffness (K)fracture toughness (KIC)thermal transports

References

[1]
Oses C, Toher C, Curtarolo S. High-entropy ceramics. Nat Rev Mater 2020, 5: 295–309.
Crossref Google Scholar
[2]
Xiang HM, Xing Y, Dai FZ, et al. High-entropy ceramics: Present status, challenges, and a look forward. J Adv Ceram 2021, 10: 385–441.
Crossref Google Scholar
[3]
Chen L, Wang YT, Hu MY, et al. Achieved limit thermal conductivity and enhancements of mechanical properties in fluorite RE3NbO7 via entropy engineering. Appl Phys Lett 2021, 118: 071905.
Crossref Google Scholar
[4]
Qin Y, Liu JX, Li F, et al. A high entropy silicide by reactive spark plasma sintering. J Adv Ceram 2019, 8: 148–152.
Crossref Google Scholar
[5]
Wei ZY, Meng GH, Chen L, et al. Progress in ceramic materials and structure design toward advanced thermal barrier coatings. J Adv Ceram 2022, 11: 985–1068.
Crossref Google Scholar
[6]
Ye YF, Wang Q, Lu J, et al. High-entropy alloy: Challenges and prospects. Mater Today 2016, 19: 349–362.
Crossref Google Scholar
[7]
Turcer LR, Sengupta A, Padture NP. Low thermal conductivity in high-entropy rare-earth pyrosilicate solid-solutions for thermal environmental barrier coatings. Scripta Mater 2021, 191: 40–45.
Crossref Google Scholar
[8]
Chen L, Li BH, Guo J, et al. High-entropy perovskite RETa3O9 ceramics for high-temperature environmental/thermal barrier coatings. J Adv Ceram 2022, 11: 556–569.
Crossref Google Scholar
[9]
Liu YC, Jia DC, Zhou Y, et al. Zn0.1Ca0.1Sr0.4Ba0.4ZrO3: A non-equimolar multicomponent perovskite ceramic with low thermal conductivity. J Eur Ceram Soc 2020, 40: 6272–6277.
Crossref Google Scholar
[10]
Qin MD, Vega H, Zhang DW, et al. 21-Component compositionally complex ceramics: Discovery of ultrahigh-entropy weberite and fergusonite phases and a pyrochlore− weberite transition. J Adv Ceram 2022, 11: 641–655.
Crossref Google Scholar
[11]
Jiang BB, Wang W, Liu SX, et al. High figure-of-merit and power generation in high-entropy GeTe-based thermoelectrics. Science 2022, 377: 208–213.
Crossref Google Scholar
[12]
Cahill JT, Turner S, Ye JC, et al. Ultrahigh-temperature ceramic aerogels. Chem Mater 2019, 31: 3700–3704.
Crossref Google Scholar
[13]
Dąbrowa J, Szymczak M, Zajusz M, et al. Stabilizing fluorite structure in ceria-based high-entropy oxides: Influence of Mo addition on crystal structure and transport properties. J Eur Ceram Soc 2020, 40: 5870–5881.
Crossref Google Scholar
[14]
Liu HW, Liu L, Xiang HM, et al. Orthorhombic to tetragonal polymorphic transformation of YTa3O9 and its inhibition through the design of high-entropy (Y0.2La0.2Ce0.2Nd0.2Gd0.2)Ta3O9. J Eur Ceram Soc 2022, 42: 3559–3569.
Google Scholar
[15]
Han Y, Liu XY, Zhang QQ, et al. Ultra-dense dislocations stabilized in high entropy oxide ceramics. Nat Commun 2022, 13: 2871.
Crossref Google Scholar
[16]
Wright AJ, Wang QY, Hu CZ, et al. Single-phase duodenary high-entropy fluorite/pyrochlore oxides with an order− disorder transition. Acta Mater 2021, 211: 116858.
Crossref Google Scholar
[17]
Zhao ZF, Chen H, Xiang HM, et al. High entropy defective fluorite structured rare-earth niobates and tantalates for thermal barrier applications. J Adv Ceram 2020, 9: 303–311.
Crossref Google Scholar
[18]
Sun LC, Luo YX, Ren XM, et al. A multicomponent γ-type (Gd1/6Tb1/6Dy1/6Tm1/6Yb1/6Lu1/6)2Si2O7 disilicate with outstanding thermal stability. Mater Res Lett 2020, 8: 424–430.
Google Scholar
[19]
Yao Y, Yang F, Zhao XF. Multicomponent high-entropy Zr–Y–Yb–Ta–Nb–O oxides for next-generation thermal barrier coating applications. J Am Ceram Soc 2022, 105: 35–43.
Crossref Google Scholar
[20]
Anand G, Wynn AP, Handley CM, et al. Phase stability and distortion in high-entropy oxides. Acta Mater 2018, 146: 119–125.
Crossref Google Scholar
[21]
Zhou L, Li F, Liu JX, et al. High-entropy thermal barrier coating of rare-earth zirconate: A case study on (La0.2Nd0.2Sm0.2Eu0.2Gd0.2)2Zr2O7 prepared by atmospheric plasma spraying. J Eur Ceram Soc 2020, 40: 5731–5739.
Google Scholar
[22]
Li YR, Wu Q, Lai ML, et al. Influence of chemical disorder on mechanical and thermal properties of multi-component rare earth zirconate pyrochlores (nRE1/n)2Zr2O7. J Appl Phys 2022, 132: 075108.
Crossref Google Scholar
[23]
Chen L, Wu P, Song P, et al. Potential thermal barrier coating materials: RE3NbO7 (RE = La, Nd, Sm, Eu, Gd, Dy) ceramics. J Am Ceram Soc 2018, 101: 4503–4508.
Crossref Google Scholar
[24]
Chen L, Song P, Feng J. Influence of ZrO2 alloying effect on the thermophysical properties of fluorite-type Eu3TaO7 ceramics. Scripta Mater 2018, 152: 117–121.
Crossref Google Scholar
[25]
Petric A, Huang PN. Oxygen and proton conduction in the yttrium tantalate pyrochlore phase. J Mater Chem 1995, 5: 607–610.
Crossref Google Scholar
[26]
Wakeshima M, Hinatsu Y. 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.
Crossref Google Scholar
[27]
Francis TL, Rao PP, Mahesh SK, et al. Effect of host structure on the photoluminescence properties of Ln3TaO7:Eu3+ red phosphors. Opt Mater 2016, 52: 134–143.
Crossref Google Scholar
[28]
Liu MJ, Zhang KJ, Zhang Q, et al. Thermodynamic conditions for cluster formation in supersaturated boundary layer during plasma spray-physical vapor deposition. Appl Surf Sci 2019, 471: 950–959.
Crossref Google Scholar
[29]
Meng GH, Zhang BY, Liu H, et al. Highly oxidation resistant and cost effective MCrAlY bond coats prepared by controlled atmosphere heat treatment. Surf Coat Tech 2018, 347: 54–65.
Crossref Google Scholar
[30]
Zhang XF, Li M, Zhang A, et al. Al-modification for PS-PVD 7YSZ TBCs to improve particle erosion and thermal cycle performances. J Adv Ceram 2022, 11: 1093–1103.
Crossref Google Scholar
[31]
Akbari-Fakhrabadi A, Rodríguez O, Rojas R, et al. Ferroelastic behavior of LaCoO3: A comparison of impression and compression techniques. J Eur Ceram Soc 2019, 39: 1569–1576.
Crossref Google Scholar
[32]
Gong JH, Deng B, Qiu HP, et al. Description of the nanoindentation unloading curves with a universal function: Theoretical consideration and applications to brittle materials. Mater Chem Phys 2020, 251: 123165.
Crossref Google Scholar
[33]
Gong JH, Deng B, Jiang DY. On the efficiency of the “effective truncation length” of indenter tip in mechanical property determination with nanoindentation tests. Mater Today Commun 2020, 25: 101412.
Crossref Google Scholar
[34]
Gong JH, Deng B, Qiu HP, et al. Self-calibration of area function for mechanical property determination with nanoindentation tests. J Mater Sci 2020, 55: 16002–16017.
Crossref Google Scholar
[35]
Gong JH, Deng B, Jiang DY. A universal function for the description of nanoindentation unloading data: Case study on soda-lime glass. J Non-Cryst Solids 2020, 544: 120067.
Crossref Google Scholar
[36]
Chen L, Jiang YH, Chong XY, et al. Synthesis and thermophysical properties of RETa3O9 (RE = Ce, Nd, Sm, Eu, Gd, Dy, Er) as promising thermal barrier coatings. J Am Ceram Soc 2018, 101: 1266–1278.
Crossref Google Scholar
[37]
Chen L, Feng J. Influence of HfO2 alloying effect on microstructure and thermal conductivity of HoTaO4 ceramics. J Adv Ceram 2019, 8: 537–544.
Crossref Google Scholar
[38]
Wright AJ, Wang QY, Yeh YT, et al. Short-range order and origin of the low thermal conductivity in compositionally complex rare-earth niobates and tantalates. Acta Mater 2022, 235: 118056.
Crossref Google Scholar
[39]
Yokogawa Y, Yoshimura M, Sōmiya S. Order−disorder in R3TaO7 (R = rare earth) phases. Solid State Ionics 1988, 28–30: 1250–1253.
Crossref Google Scholar
[40]
Doi Y, Harada Y, Hinatsu Y. Crystal structures and magnetic properties of fluorite-related oxides Ln3NbO7 (Ln = lanthanides). J Solid State Chem 2009, 182: 709–715.
Crossref Google Scholar
[41]
Shlyakhtina AV, Pigalskiy KS, Belov DA, et al. Proton and oxygen ion conductivity in the pyrochlore/fluorite family of Ln2−xCaxScMO7−δ (Ln = La, Sm, Ho, Yb; M = Nb, Ta; x = 0, 0.05, 0.1) niobates and tantalates. Dalton Trans 2018, 47: 2376–2392.
Crossref Google Scholar
[42]
Yang J, Pan W, Han Y, et al. Mechanical properties, oxygen barrier property, and chemical stability of RE3NbO7 for thermal barrier coating. J Am Ceram Soc 2020, 103: 2302–2308.
Crossref Google Scholar
[43]
Zhu JT, Meng XY, Xu J, et al. Ultra-low thermal conductivity and enhanced mechanical properties of high-entropy rare earth niobates (RE3NbO7, RE = Dy, Y, Ho, Er, Yb). J Eur Ceram Soc 2021, 41: 1052–1057.
Crossref Google Scholar
[44]
Chen L, Guo J, Zhu YK, et al. Features of crystal structures and thermo-mechanical properties of weberites RE3NbO7 (RE = La, Nd, Sm, Eu, Gd) ceramics. J Am Ceram Soc 2021, 104: 404–412.
Crossref Google Scholar
[45]
Cantwell PR, Tang M, Dillon SJ, et al. Grain boundary complexions. Acta Mater 2014, 62: 1–48.
Crossref Google Scholar
[46]
Robinson K, Gibbs GV, Ribbe PH. Quadratic elongation: A quantitative measure of distortion in coordination polyhedra. Science 1971, 172: 567–570.
Crossref Google Scholar
[47]
Baur WH. The geometry of polyhedral distortions. Predictive relationships for the phosphate group. Acta Cryst 1974, B30: 1195–1215.
Crossref Google Scholar
[48]
Chen L, Hu MY, Wu P, et al. Thermal expansion performance and intrinsic lattice thermal conductivity of ferroelastic RETaO4 ceramics. J Am Ceram Soc 2019, 102: 4809–4821.
Crossref Google Scholar
[49]
Gong JH, Peng ZJ, Miao HZ. Analysis of the nanoindentation load−displacement curves measured on high-purity fine-grained alumina. J Eur Ceram Soc 2005, 25: 649–654.
Crossref Google Scholar
[50]
Gong JH, Miao HZ, Peng ZJ. Analysis of the nanoindentation data measured with a Berkovich indenter for brittle materials: Effect of the residual contact stress. Acta Mater 2004, 52: 785–793.
Crossref Google Scholar
[51]
Chen L, Wu P, Feng J. Optimization thermophysical properties of TiO2 alloying Sm3TaO7 ceramics as promising thermal barrier coatings. Int J Appl Ceram Technol 2019, 16: 230–242.
Google Scholar
[52]
Roncallo G, Barbareschi E, Cacciamani G, et al. Effect of cooling rate on phase transformation in 6−8 wt% YSZ APS TBCs. Surf Coat Tech 2021, 412: 127071.
Google Scholar
[53]
Shen Y, Clarke DR. Resistance to low-temperature degradation of equimolar YO1.5−TaO2.5 stabilized tetragonal ZrO2 ceramics in air. J Am Ceram Soc 2010, 93: 2024–2027.
Google Scholar
[54]
Shian S, Sarin P, Gurak M, et al. The tetragonal− monoclinic, ferroelastic transformation in yttrium tantalate and effect of zirconia alloying. Acta Mater 2014, 69: 196–202.
Google Scholar
[55]
Feng J, Shian S, Xiao B, et al. First-principles calculations of the high-temperature phase transformation in yttrium tantalate. Phys Rev B 2014, 90: 094102.
Google Scholar
[56]
Chen HF, Zhang C, Liu YC, et al. Recent progress in thermal/environmental barrier coatings and their corrosion resistance. Rare Metals 2020, 39: 498–512.
Google Scholar
[57]
Grant KM, Krämer S, Seward GGE, et al. Calcium− magnesium alumino−silicate interaction with yttrium monosilicate environmental barrier coatings. J Am Ceram Soc 2010, 93: 3504–3511.
Google Scholar
[58]
Qu WW, Zhang XX, Yuan BF, et al. Homologous layered InFeO3(ZnO)m: New promising abradable seal coating materials. Rare Metals 2018, 37: 79–94.
Google Scholar
[59]
Hinatsu Y, Doi Y. Studies on phase transition temperature of rare earth niobates Ln3NbO7 (Ln = Pr, Sm, Eu) with orthorhombic fluorite-related structure. Solid State Sci 2017, 68: 19–24.
Google Scholar
[60]
Kovyazina SA, Perelyaeva LA, Leonidov IA, et al. High-temperature structural disorder in R3NbO7. J Struct Chem 2003, 44: 975–979.
Google Scholar
[61]
Liu B, Zhao JL, Liu YC, et al. Application of high-throughput first-principles calculations in ceramic innovation. J Mater Sci Technol 2021, 88: 143–157.
Crossref Google Scholar
[62]
Soltani R, Heydarzadeh-Sohi M, Ansari M, et al. Effect of APS process parameters on high-temperature wear behavior of nickel−graphite abradable seal coatings. Surf Coat Tech 2017, 321: 403–408.
Crossref Google Scholar
[63]
Dong L, Liu MJ, Zhang XF, et al. Pressure infiltration of molten aluminum for densification of environmental barrier coatings. J Adv Ceram 2022, 11: 145–157.
Crossref Google Scholar
[64]
Zhu YK, Sun YX, Zhu JB, et al. Mediating point defects endows n-type Bi2Te3 with high thermoelectric performance and superior mechanical robustness for power generation application. Small 2022, 18: 2201352.
Crossref Google Scholar
[65]
Chong XY, Palma JPS, Wang Y, et al. Thermodynamic properties of the Yb−Sb system predicted from first-principles calculations. Acta Mater 2021, 217: 117169.
Crossref Google Scholar
[66]
Chong XY, Hu MY, Wu P, et al. Tailoring the anisotropic mechanical properties of hexagonal M7X3 (M = Fe, Cr, W, Mo; X = C, B) by multialloying. Acta Mater 2019, 169: 193–208.
Crossref Google Scholar
[67]
Qu ZX, Yu CJ, Wei YT, et al. Thermal conductivity of boron carbide under fast neutron irradiation. J Adv Ceram 2022, 11: 482–494.
Crossref Google Scholar
[68]
Bruls RJ, Hintzen HT, Metselaar R. A new estimation method for the intrinsic thermal conductivity of nonmetallic compounds: A case study for MgSiN2, AlN and Si3N4 ceramics. J Eur Ceram Soc 2005, 25: 767–779.
Crossref Google Scholar
[69]
Che JW, Liu XY, Wang XZ, et al. Fluctuating bonding leads to glass-like thermal conductivity in perovskite rare-earth tantalates. Acta Mater 2022, 237: 118162.
Crossref Google Scholar
[70]
Yang J, Qian X, Pan W, et al. Diffused lattice vibration and ultralow thermal conductivity in the binary Ln−Nb−O oxide system. Adv Mater 2019, 31: 1808222.
Crossref Google Scholar
[71]
Cahill DG, Watson SK, Pohl RO. Lower limit to the thermal conductivity of disordered crystals. Phys Rev B 1992, 46: 6131–6140.
Crossref Google Scholar
[72]
Tian ZL, Zhang J, Zhang TY, et al. Towards thermal barrier coating application for rare earth silicates RE2SiO5 (RE = La, Nd, Sm, Eu, and Gd). J Eur Ceram Soc 2019, 39: 1463–1476.
Crossref Google Scholar
[73]
Qu ZX, Wan CL, Pan W. Thermophysical properties of rare-earth stannates: Effect of pyrochlore structure. Acta Mater 2012, 60: 2939–2949.
Crossref Google Scholar
[74]
Zhao ZF, Xiang HM, Chen H, et al. High-entropy (Nd0.2Sm0.2Eu0.2Y0.2Yb0.2)4Al2O9 with good high temperature stability, low thermal conductivity, and anisotropic thermal expansivity. J Adv Ceram 2020, 9: 595–605.
Google Scholar
[75]
Zhan X, Li Z, Liu B, et al. Theoretical prediction of elastic stiffness and minimum lattice thermal conductivity of Y3Al5O12, YAlO3 and Y4Al2O9. J Am Ceram Soc 2012, 95: 1429–1434.
Crossref Google Scholar
[76]
Guo YC, Feng SW, Yang YF, et al. High-entropy titanate pyrochlore as newly low-thermal conductivity ceramics. J Eur Ceram Soc 2022, 42: 6614–6623.
Crossref Google Scholar
Journal of Advanced Ceramics
Volume 12 Issue 2,
February 2023
Pages 399-413
DOI: 10.26599/JAC.2023.9220693
Cite this article:
Chen L, Luo K, Li B, et al. Mechanical property enhancements and amorphous thermal transports of ordered weberite-type RE3Nb/TaO7 high-entropy oxides. Journal of Advanced Ceramics, 2023, 12(2): 399-413. https://doi.org/10.26599/JAC.2023.9220693

2177

Views

429

Downloads

18

Crossref

15

Web of Science

17

Scopus

0

CSCD

Altmetrics
Received: 06 September 2022
Revised: 11 October 2022
Accepted: 07 November 2022
Published: 03 January 2023
© The Author(s) 2022.

Open Access 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