Effect of lattice distortion on thermal conduction behavior in a novel high-entropy rare-earth tantalates
Source abstract
Abstract
In this study, seven types of thermal protection coating materials (high-entropy rare-earth tantalates 5RETaO 4, RE= Nd, Sm, Eu, Gd, Dy, Ho, Y, Eu, Tm, and Y) were synthesized by solid-phase reaction and high-throughput experiment. Results showed that 5RETaO 4 exhibits excellent thermophysical properties owing to its unique high-entropy and lattice distortion effects. Namely, (Nd 0.2Dy 0.2Ho 0.2Y 0.2Eu 0.2)TaO 4 ceramics perform low thermal conductivity and suitable thermal expansion coefficient. The low thermal conductivity of 5RETaO 4 is mainly due to the difference of RE 3+-O 2- bond caused by different rare-earth cation radius, which further changes the length of an ionic bond between O 2- and Ta 5+, resulting in severe lattice distortion and increased phonon scattering coefficient. These excellent properties indicate that (Nd 0.2Dy 0.2Ho 0.2Y 0.2Eu 0.2)TaO 4 can be used as a new generation of thermal protection coating material.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Thermal properties of materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (46)
Show source-provided references
1. Novel thermal barrier coatings based on Mg2SiO4/8YSZ double-ceramic-layer systems deposited by APS10.1016/j.jallcom.2022.164442 ↗
2. Designing high-entropy rare-earth zirconates with tunable thermophysical properties for thermal barrier coatings10.1016/j.jallcom.2022.166714 ↗
3. Health and durability of protective and thermal barrier coatings monitored in service by visual inspection10.3390/coatings12050624 ↗
4. Thermal shock resistance of thermal barrier coating with different bondcoat types and diffusion pre-coating10.1016/j.ceramint.2022.09.172 ↗
5. High-entropy perovskite RETa3O9 ceramics for high-temperature environmental/thermal barrier coatings10.1007/s40145-021-0556-0 ↗
6. Progress in ceramic materials and structure design toward advanced thermal barrier coatings10.1007/s40145-022-0581-7 ↗
7. High-entropy (La0.2Nd0.2Sm0.2Eu0.2Gd0.2)2Ce2O7: a potential thermal barrier material with improved thermo-physical properties10.1007/s40145-021-0563-1 ↗
8. Thermodynamic properties and thermal cycling lifetimes of LaMeAl11O19/YSZ thermal barrier coatings10.15541/jim20220202 ↗
9. Ultra-low thermal conductivity and enhanced mechanical properties of high-entropy rare earth niobates (RE3NbO7, RE = Dy, Y, Ho, Er, Yb)10.1016/j.jeurceramsoc.2020.08.070 ↗
10. Enhanced mechanical and thermal properties of ferroelastic high-entropy rare-earth-niobates10.1016/j.scriptamat.2021.113912 ↗
11. Thermochemistry and phase stability of the polymorphs of yttrium tantalate, YTaO410.1016/j.jeurceramsoc.2020.10.039 ↗
12. Thermal expansion performance and intrinsic lattice thermal conductivity of ferroelastic RETaO4 ceramics10.1111/jace.16328 ↗
13. Microstructure and thermal properties of RETaO4 (RE = Nd, Eu, Gd, Dy, Er, Yb, Lu) as promising thermal barrier coating materials10.1016/j.scriptamat.2016.08.019 ↗
14. High entropy (Yb0.25Y0.25Lu0.25Er0.25)2SiO5 with strong anisotropy in thermal expansion10.1016/j.jmst.2019.07.022 ↗
15. Review of high entropy ceramics: design, synthesis, structure and properties10.1039/C9TA05698J ↗
16. Microstructure and dielectric properties of high-entropy Sr0.9La0.1MeO3 (Me: Zr, Sn, Ti, Hf, Mn, Nb) perovskite ceramics10.1016/j.jmrt.2022.09.081 ↗
17. Phase evolution and thermal stability of novel high-entropy (Mo0.2Nb0.2Ta0.2V0.2W0.2)Si2 ceramics10.1016/j.jeurceramsoc.2022.06.067 ↗
18. Design strategies for perovskite-type high-entropy oxides with applications in optics10.1021/acsami.3c09447 ↗
19. Theoretical and experimental investigations on the phase stability and fabrication of high-entropy monoborides10.1016/j.jeurceramsoc.2023.01.026 ↗
20. Outstanding wear resistance of plasma sprayed high-entropy monoboride composite coating by inducing phase structural cooperative mechanism10.1016/j.apsusc.2023.156516 ↗
21. The influences of lattice distortion on the antiferroelectric transition and relaxation of oxygen vacancies in high-entropy perovskites (Bi0.2Na0.2Ba0.2K0.2X0.2)TiO3 with X=Ca, Sr or La10.1016/j.scriptamat.2021.114096 ↗
22. High-entropy ceramics: present status, challenges, and a look forward10.1007/s40145-021-0477-y ↗
23. High-entropy (Y0.2Nd0.2Sm0.2Eu0.2Er0.2)AlO3: a promising thermal/environmental barrier material for oxide/oxide composites10.1016/j.jmst.2020.02.011 ↗
24. Synthesis of high-entropy La2B2O7 ceramics with non-equivalent principal elements in B-sites and their CMAS resistance performance10.1016/j.jallcom.2022.166635 ↗
25. High-entropy ferroelastic (10RE0.1)TaO4 ceramics with oxygen vacancies and improved thermophysical properties10.1016/j.jmst.2022.12.027 ↗
26. Preparation and thermal properties of rare earth tantalates (RETaO4) high-entropy ceramics10.15541/jim20200426 ↗
27. High-entropy ferroelastic rare-earth tantalite ceramic: (Y0.2Ce0.2Sm0.2Gd0.2Dy0.2)TaO410.1111/jace.17932 ↗
28. Effect of components on the microstructures and properties of rare-earth zirconate ceramics prepared by ultrafast high-throughput sintering10.1016/j.jeurceramsoc.2021.04.053 ↗
29. High throughput experiment assisted discovery of new Ni-base superalloys10.1016/j.scriptamat.2019.11.019 ↗
30. High-entropy rare earth titanates with low thermal conductivity designed by lattice distortion10.1111/jace.19233 ↗
31. Microstructure and properties of AlCoxCrFeNiCu high-entropy alloy coating synthesized by cold spraying assisted induction remelting
32. Atomistic understanding of incipient plasticity in BCC refractory high entropy alloys10.1016/j.jallcom.2022.166058 ↗
33. High-entropy titanate pyrochlore as newly low-thermal conductivity ceramics10.1016/j.jeurceramsoc.2022.07.006 ↗
34. Synthesis and thermophysical properties of RETa3O9 (RE=Ce, Nd, Sm, Eu, Gd, Dy, Er) as promising thermal barrier coatings10.1111/jace.15268 ↗
35. Multicomponent high-entropy zirconates with comprehensive properties for advanced thermal barrier coating10.1016/j.scriptamat.2019.12.006 ↗
36. Novel high-entropy microwave dielectric ceramics Sr(La0.2Nd0.2Sm0.2Eu0.2Gd0.2)AlO4 with excellent temperature stability and mechanical properties10.1016/j.jeurceramsoc.2023.01.028 ↗
37. Thermal diffusivity/microstructure relationship in Y-PSZ thermal barrier coatings10.1361/105996399770350629 ↗
38. High entropy defective fluorite structured rare-earth niobates and tantalates for thermal barrier applications10.1007/s40145-020-0368-7 ↗
39. Pressure-induced tuning of lattice distortion in a high-entropy oxide10.1038/s42004-019-0216-2 ↗
40. Rare-earth-tantalate high-entropy ceramics with sluggish grain growth and low thermal conductivity10.1016/j.ceramint.2021.12.332 ↗
41. Synthesis and characterization of a new high NIR reflective ytterbium molybdenum oxide and related doped pigments10.1016/j.dyepig.2016.11.024 ↗
42. Visualization of dopant oxygen atoms in a Bi2Sr2CaCu2O8+δ superconductor10.1002/adfm.201903843 ↗
43. Rare-earth-niobate high-entropy ceramic foams with enhanced thermal insulation performance10.1016/j.jmst.2021.10.050 ↗
44. Local Lattice Distortion in High-Entropy Carbide Ceramics10.3390/met11091399 ↗
45. Orthorhombic to tetragonal polymorphic transformation of YTa3O9 and its inhibition through the design of high-entropy (Y0.2La0.2Ce0.2Nd0.2Gd0.2)Ta3O910.1016/j.jeurceramsoc.2022.03.005 ↗
46. Foundations of the callaway theory of thermal conductivity