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Low thermal conductivity, compatible thermal expansion coefficient, and good calcium–magnesium–aluminosilicate (CMAS) corrosion resistance are critical requirements for environmental barrier coatings used on silicon-based ceramics. RE2Si2O7 (RE = rare earth) has been widely recognized as one of the most promising candidates for environmental barrier coatings due to its good water vapor corrosion resistance. However, the relatively high thermal conductivity and poor resistance to CMAS corrosion have limited its practical application. Inspired by the high entropy effect, in this work, a novel rare earth disilicate (Lu1/7Yb1/7Sc1/7Er1/7Y1/7Ho1/7Dy1/7)2Si2O7 ((7RE1/7)2Si2O7) has been designed and synthesized by a solid reaction process. (7RE1/7)2Si2O7 showed a low thermal conductivity of 1.81 W·m−1·K−1 at 1273 K. Furthermore, the thermal expansion coefficient of (7RE1/7)2Si2O7 (4.07×10−6 ℃−1 from room temperature (RT) to 1400 ℃) is close to that of the SiC-based ceramic matrix composites (SiC-CMCs) ((4.5–5.5)×10−6 ℃−1). Additionally, (7RE1/7)2Si2O7 exhibited excellent resistance to CMAS corrosion. When exposed to CMAS at 1300 ℃ for 48 h, the reaction layer thickness was 22 μm. The improved performance of (7RE1/7)2Si2O7 highlights its potential as a promising candidate for thermal/environmental barrier coatings.
Yu Z, Zhao HB, Wadley HNG. The vapor deposition and oxidation of platinum- and yttria-stabilized zirconia multilayers. J Am Ceram Soc 2011, 94: 2671–2679.
Richards BT, Wadley HNG. Plasma spray deposition of tri-layer environmental barrier coatings. J Eur Ceram Soc 2014, 34: 3069–3083.
Zhang WW, Li GR, Zhang Q, et al. Comprehensive damage evaluation of localized spallation of thermal barrier coatings. J Adv Ceram 2017, 6: 230–239.
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.
Eaton HE, Linsey GD. Accelerated oxidation of SiC CMC’s by water vapor and protection via environmental barrier coating approach. J Eur Ceram Soc 2002, 22: 2741–2747.
Wolf M, Mack DE, Guillon O, et al. Resistance of pure and mixed rare earth silicates against calcium–magnesium–aluminosilicate (CMAS): A comparative study. J Am Ceram Soc 2020, 103: 7056–7071.
Cojocaru CV, Lévesque D, Moreau C, et al. Performance of thermally sprayed Si/mullite/BSAS environmental barrier coatings exposed to thermal cycling in water vapor environment. Surf Coat Technol 2013, 216: 215–223.
Cui YJ, Guo MQ, Wang CL, et al. Preparation and water–vapour corrosion behaviour of BSAS environmental barrier coatings fabricated on ceramic matrix composites. Surf Coat Technol 2022, 449: 128953.
Ma Z, Liu L, Zheng W. Environmental barrier coating for aeroengines: Materials and properties. Adv Ceram 2019, 40: 331–344. (in Chinese)
Tian ZL, Zheng LY, Wang JM, et al. Theoretical and experimental determination of the major thermo–mechanical properties of RE2SiO5 (RE = Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y) for environmental and thermal barrier coating applications. J Eur Ceram Soc 2016, 36: 189–202.
Zhou YC, Zhao C, Wang F, et al. Theoretical prediction and experimental investigation on the thermal and mechanical properties of bulk β-Yb2Si2O7. J Am Ceram Soc 2013, 96: 3891–3900.
Turcer LR, Padture NP. Towards multifunctional thermal environmental barrier coatings (TEBCs) based on rare-earth pyrosilicate solid-solution ceramics. Scripta Mater 2018, 154: 111–117.
Tian ZL, Zheng LY, Wang JY. Synthesis, mechanical and thermal properties of a damage tolerant ceramic: β-Lu2Si2O7. J Eur Ceram Soc 2015, 35: 3641–3650.
Turcer LR, Krause AR, Garces HF, et al. Environmental barrier coating ceramics for resistance against attack by molten calcia–magnesia–aluminosilicate (CMAS) glass: Part II, β-Yb2Si2O7 and β-Sc2Si2O7. J Eur Ceram Soc 2018, 38: 3914–3924.
Tian ZL, Ren XM, Lei YM, et al. Corrosion of RE2Si2O7 (RE = Y, Yb, and Lu) environmental barrier coating materials by molten calcium–magnesium–alumino–silicate glass at high temperatures. J Eur Ceram Soc 2019, 39: 4245–4254.
Lv XR, Cui JP, Zhang J, et al. Phase composition and property evolution of (Yb1− x Ho x )2Si2O7 solid solution as environmental/thermal barrier coating candidates. J Eur Ceram Soc 2022, 42: 4377–4387.
Maier N, Nickel KG, Rixecker G. High temperature water vapour corrosion of rare earth disilicates (Y,Yb,Lu)2Si2O7 in the presence of Al(OH)3 impurities. J Eur Ceram Soc 2007, 27: 2705–2713.
Wang X, Cheng MH, Xiao GZ, et al. Preparation and corrosion resistance of high-entropy disilicate (Y0.25Yb0.25Er0.25Sc0.25)2Si2O7 ceramics. Corros Sci 2021, 192: 109786.
Wu ZT, Ji W, Zhang JY, et al. Grain-refining fabrication of nanocrystalline (La0.2Nd0.2Sm0.2Gd0.2Eu0.2)2Zr2O7 high-entropy ceramics by ultra-high pressure sintering. J Mater Sci Technol 2023, 167: 205–212.
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.
Sun LC, Luo YX, Tian ZL, et al. High temperature corrosion of (Er0.25Tm0.25Yb0.25Lu0.25)2Si2O7 environmental barrier coating material subjected to water vapor and molten calcium–magnesium–aluminosilicate (CMAS). Corros Sci 2020, 175: 108881.
Wang X, He YX, Wang C, et al. Thermal performance regulation of high-entropy rare-earth disilicate for thermal environmental barrier coating materials. J Am Ceram Soc 2022, 105: 4588–4594.
Chen H, Xiang HM, Dai FZ, et al. High entropy (Yb0.25Y0.25Lu0.25Er0.25)2SiO5 with strong anisotropy in thermal expansion. J Mater Sci Technol 2020, 36: 134–139.
Dong Y, Ren K, Lu YH, et al. High-entropy environmental barrier coating for the ceramic matrix composites. J Eur Ceram Soc 2019, 39: 2574–2579.
Zhang PX, Duan XJ, Xie XC, et al. Xenotime-type high-entropy (Dy1/7Ho1/7Er1/7Tm1/7Yb1/7Lu1/7Y1/7)PO4: A promising thermal/environmental barrier coating material for SiCf/SiC ceramic matrix composites. J Adv Ceram 2023, 12: 1033–1045.
Wang CJ, Wang Y. Thermophysical properties of La2(Zr0.7Ce0.3)2O7 prepared by hydrothermal synthesis for nano-sized thermal barrier coatings. Ceram Int 2015, 41: 4601–4607.
Bruls R, Hintzen H, Metselaar R. A new estimation method for the intrinsic thermal conductivity of nonmetallic compounds: A case study for MgSiN2, AlN and β-Si3N4 ceramics. J Eur Ceram Soc 2005, 25: 767–779.
Charvat FR, Kingery WD. Thermal conductivity: XIII, effect of microstructure on conductivity of single-phase ceramics. J Am Ceram Soc 1957, 40: 306–315.
Klemens PG. Thermal resistance due to point defects at high temperatures. Phys Rev 1960, 119: 507–509.
Ambegaokar V. Thermal resistance due to isotopes at high temperatures. Phys Rev 1959, 114: 488–489.
Tian ZL, Sun LC, Wang JM, et al. Theoretical prediction and experimental determination of the low lattice thermal conductivity of Lu2SiO5. J Eur Ceram Soc 2015, 35: 1923–1932.
Wan CL, Pan W, Xu Q, et al. Effect of point defects on the thermal transport properties of (La x Gd1− x )2Zr2O7: Experiment and theoretical model. Phys Rev B 2006, 74: 144109.
Clarke DR. Materials selection guidelines for low thermal conductivity thermal barrier coatings. Surf Coat Technol 2003, 163–164: 67–74.
Xue Y, Zhao XQ, An YL, et al. High-entropy (La0.2Nd0.2Sm0.2Eu0.2Gd0.2)2Ce2O7: A potential thermal barrier material with improved thermo-physical properties. J Adv Ceram 2022, 11: 615–628.
Gao LY, Luo YX, Wan P, et al. Theoretical and experimental investigations on mechanical properties of (Fe,Ni)Sn2 intermetallic compounds formed in SnAgCu/Fe–Ni solder joints. Mater Charact 2021, 178: 111195.
Menke Y, Peltier-Baron V, Hampshire S. Effect of rare-earth cations on properties of sialon glasses. J Non Cryst Solids 2000, 276: 145–150.
Yang HX, Prewitt CT. On the crystal structure of pseudowollastonite (CaSiO3). Am Mineral 1999, 84: 929–932.
Perrudin F, Petitjean C, Panteix PJ, et al. Synthesis and structural refinement of isomorphic cyclosilicate Ca3RE2(Si3O9)2 (RE = Nd, Sm, Gd, Dy, Yb). J Solid State Chem 2022, 313: 123312.
Chen ZY, Lin CC, Zheng W, et al. Investigation on improving corrosion resistance of rare earth pyrosilicates by high-entropy design with RE-doping. Corros Sci 2022, 199: 110217.
Wei FS, Zhang DX, Gong X, et al. A systematic analysis of the calcium–magnesium–aluminosilicate corrosion behavior of high-entropy (5Re0.2)2Si2O7 materials. Corros Sci 2023, 219: 111221.
Dong Y, Ren K, Wang QK, et al. Interaction of multicomponent disilicate (Yb0.2Y0.2Lu0.2Sc0.2Gd0.2)2Si2O7 with molten calcia–magnesia–aluminosilicate. J Adv Ceram 2022, 11: 66–74.
Costa G, Harder BJ, Bansal NP, et al. Thermochemistry of calcium rare-earth silicate oxyapatites. J Am Ceram Soc 2020, 103: 1446–1453.
Ma WY, Luo YB, Ma Z, et al. La2Zr2O7 based high entropy ceramic with a low thermal conductivity and enhanced CMAS corrosion resistance. Ceram Int 2023, 49: 29729–29735.
Wang F, Guo L, Wang CM, et al. Calcium–magnesium–alumina–silicate (CMAS) resistance characteristics of LnPO4 (Ln = Nd, Sm, Gd) thermal barrier oxides. J Eur Ceram Soc 2017, 37: 289–296.
Li DX, Jiang P, Gao RH, et al. Experimental and numerical investigation on the thermal and mechanical behaviours of thermal barrier coatings exposed to CMAS corrosion. J Adv Ceram 2021, 10: 551–564.
Li BW, Sun JY, Guo L. CMAS corrosion behavior of Sc doped Gd2Zr2O7/YSZ thermal barrier coatings and their corrosion resistance mechanisms. Corros Sci 2021, 193: 109899.
Wu D, Zhang H, Shan X, et al. A novel CMAS-resistant material based on thermodynamic equilibrium design: Apatite-type Gd10(SiO4)6O3. J Am Ceram Soc 2020, 103: 3401–3415.
Tu TZ, Liu JX, Zhou L, et al. Graceful behavior during CMAS corrosion of a high-entropy rare-earth zirconate for thermal barrier coating material. J Eur Ceram Soc 2022, 42: 649–657.
Chen ZL, Tian ZL, Zheng LY, et al. Thermo-mechanical properties and CMAS resistance of (Ho0.4Yb0.3Lu0.3)2SiO5 solid solution for environmental barrier coating applications. Ceram Int 2023, 49: 6429–6439.
Qu WW, Li SS, Chen ZH, et al. Hot corrosion behavior and wettability of calcium–magnesium–alumina–silicate (CMAS) on LaTi2Al9O19 ceramic. Corros Sci 2020, 162: 108199.
Bryce K, Shih YT, Huang LP, et al. Calcium–magnesium–aluminosilicate (CMAS) corrosion resistance of high entropy rare-earth phosphate (Lu0.2Yb0.2Er0.2Y0.2Gd0.2)PO4: A novel environmental barrier coating candidate. J Eur Ceram Soc 2023, 43: 6461–6472.
Chen ZL, Tian ZL, Zheng LY, et al. (Ho0.25Lu0.25Yb0.25Eu0.25)2SiO5 high-entropy ceramic with low thermal conductivity, tunable thermal expansion coefficient, and excellent resistance to CMAS corrosion. J Adv Ceram 2022, 11: 1279–1293.
Li H, Yu YP, Fang B, et al. Calcium–magnesium–alumina–silicate (CMAS) corrosion behavior of A6B2O17 (A = Zr, Hf; B = Nb, Ta) as potential candidate for thermal barrier coating (TBC). Corros Sci 2022, 204: 110395.
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