Structure, properties and corrosion resistance of high entropy (Y0.2Gd0.2Dy0.2La0.2Sm0.2)TaO4 ceramic materials

doi:10.3969/j.issn.1001-1935.2023.05.009

Refractories ›› 2023, Vol. 57 ›› Issue (5): 417-422.DOI: 10.3969/j.issn.1001-1935.2023.05.009

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Structure, properties and corrosion resistance of high entropy (Y_0.2Gd_0.2Dy_0.2La_0.2Sm_0.2)TaO₄ ceramic materials

Wang Ruida, Zhao Shixian, Chen Liugang, Si Yaochen, Li Lingfeng, Li Hongxia, Liu Guanghua

First author's address: State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,Henan,China

Received:2023-07-17 Online:2023-10-15 Published:2023-10-26

(Y_0.2Gd_0.2Dy_0.2La_0.2Sm_0.2)TaO₄高熵陶瓷材料的结构、性能及抗侵蚀行为研究

王瑞达^1,2), 赵世贤¹⁾, 陈留刚²⁾, 司瑶晨¹⁾, 李凌锋¹⁾, 李红霞¹⁾, 刘广华³⁾

1)中钢集团洛阳耐火材料研究院有限公司先进耐火材料国家重点实验室河南洛阳 471039
2)郑州大学材料科学与工程学院河南省高温功能材料重点实验室河南郑州 450052
3)中国联合重型燃气轮机技术有限公司北京 100045

作者简介:王瑞达:男,1998年生,硕士研究生。E-mail:1461586234@qq.com
基金资助:
河南省中央引导地方科技发展资金项目(Z20221343008)。

Abstract

Abstract: In order to meet the urgent demand of new thermal barrier coating materials for a new generation of aero-engines,a high entropy rare earth tantalate (Y_0.2Gd_0.2Dy_0.2La_0.2Sm_0.2)TaO₄ material,abbreviated as (5RE_0.2)TaO₄,was developed using high-purity oxides (Y₂O₃,Gd₂O₃,Dy₂O₃,Sm₂O₃,La₂O₃,Ta₂O₅) as raw materials according to the stoichiometric ratio,and insulating at 1 200-1 750 ℃ for 5 h for a solid phase reaction. The phase composition,microstructure,thermal properties,mechanical properties,and CMAS (CaO-MgO-Al₂O₃-SiO₂) corrosion resistance of the material were studied.The results show that:(1)the (5RE_0.2)TaO₄ ceramic material has a monoclinic structure with obvious ferroelastic domain;(2)the material fired at 1 750 ℃ exhibits extremely low thermal conductivity (1.65 W·m^-1·K^-1,600 ℃) and high thermal expansion coefficient (10.2×10^-6K^-1,1 200 ℃);(3)due to the unique ferroelastic toughening effect,the fracture toughness of the (5RE_0.2)TaO₄ material fired at 1 750 ℃ reaches 2.4 MPa·m^1/2;(4)(5RE_0.2)TaO₄ reacts with CMAS melt forming a reaction layer,showing excellent corrosion resistance.

Key words: thermal barrier coating, rare earth tantalate, high entropy ceramics, CMAS corrosion resistance

摘要： 为满足新一代航空发动机对新型热障涂层材料的迫切需求,以高纯氧化物(Y₂O₃、Gd₂O₃、Dy₂O₃、Sm₂O₃、La₂O₃、Ta₂O₅)为原料,按化学计量比配料,经1 200~1 750 ℃保温5 h固相反应,制备了高熵稀土钽酸盐(Y_0.2Gd_0.2Dy_0.2La_0.2Sm_0.2)TaO₄材料,简称为(5RE_0.2)TaO₄材料。研究了材料的物相组成、显微结构、热学性能、力学性能和抗CaO-MgO-Al₂O₃-SiO₂(CMAS)侵蚀行为。结果表明:1)(5RE_0.2)TaO₄陶瓷材料为单斜结构,存在明显铁弹畴;2)该材料经1 750 ℃烧后具有极低的热导率(1.65 W·m^-1·K^-1,600 ℃)和较高的热膨胀系数(10.2×10^-6 K^-1,1 200 ℃);3)由于独特的铁弹增韧效应,经1 750 ℃烧后(5RE_0.2)TaO₄材料的断裂韧性达到2.4 MPa·m^1/2;4)(5RE_0.2)TaO₄与CMAS熔体作用后形成反应层,表现出了优异的抗侵蚀性能。

关键词: 热障涂层, 稀土钽酸盐, 高熵陶瓷, 抗CMAS侵蚀

CLC Number:

TK265

Wang Ruida, Zhao Shixian, Chen Liugang, Si Yaochen, Li Lingfeng, Li Hongxia, Liu Guanghua. Structure, properties and corrosion resistance of high entropy (Y_0.2Gd_0.2Dy_0.2La_0.2Sm_0.2)TaO₄ ceramic materials[J]. Refractories, 2023, 57(5): 417-422.

王瑞达, 赵世贤, 陈留刚, 司瑶晨, 李凌锋, 李红霞, 刘广华. (Y_0.2Gd_0.2Dy_0.2La_0.2Sm_0.2)TaO₄高熵陶瓷材料的结构、性能及抗侵蚀行为研究[J]. 耐火材料, 2023, 57(5): 417-422.

References

[1] TURCER L R,PADTURE N P.Towards multifunctional thermal environmental barrier coatings (TEBCs) based on rare-earth pyrosilicate solid-solution ceramics[J].Scripta Mater,2018,154:111.
[2] YANG G J,CHEN Z L,LI C X, et al.Microstructural and mechanical property evolutions of plasma-sprayed YSZ coating during high-temperature exposure:Comparison study between 8YSZ and 20YSZ[J].Journal of Thermal Spray Technology,2013,22(8):1294.
[3] KUMAR V,BALASUBRAMANIAN K.Progress update on failure mechanisms of advanced thermal barrier coatings:A review[J].Progress in Organic Coatings,2016,90:54-82.
[4] ZHAO Z F,CHEN H,XIANG H M,et al.High entropy defective fluorite structured rare-earth niobates and tantalates for thermal barrier applications[J].Journal of Advanced Ceramics,2020,9:303- 311.
[5] WANG J,CHONG X Y,ZHOU R,et al.Microstructure and thermal properties of RETaO₄ (RE = Nd,Eu,Gd,Dy,Er,Yb,Lu) as promising thermal barrier coating materials[J].Scripta Mater,2017,126:24-28.
[6] WANG J,ZHOU Y,CHONG X Y,et al.Microstructure and thermal properties of a promising thermal barrier coating:YTaO₄[J].Ceramics International,2016,42(12):13876-13881.
[7] ZHOU Y X,GAN M D,YU W,et al.First-principles study of thermophysical properties of polymorphous YTaO₄ ceramics[J].Journal of the American Ceramic society,2021,104(12):6467-6480.
[8] CHEN L,HU M Y,WU P,et al.Thermal expansion performance and intrinsic lattice thermal conductivity of ferroelastic RETaO₄ ceramics[J].Journal of the American Ceramic society,2019,102(8):4809-4821.
[9] SWALIN R A,ARENTS J.Thermodynamics of solids[J].Journal of the Electrochemical Society,1962,109(12):308C.
[10] ANSTIS G R,CHANTIKUL P,LAWN B R,et al.A critical evaluation of indentation techniques for measuring fracture toughness:I,Direct crack measurements[J].Journal of the American Ceramic society,1981,64(9):533-538.
[11] BOCCACCINI A R.Machinability and brittleness of glass-ceramics[J].Journal of Materials Processing Technology,1997,65(1-3):302-304.
[12] DELON E,ANSART F,DULUARD S,et al.Synthesis of yttria by aqueous sol-gel route to develop anti-CMAS coatings for the protection of EBPVD thermal barriers[J].Ceramics International,2016,42(12):13704-13714.
[13] WANG X,HE Y X,WANG C,et al.Thermal performance regulation of high-entropy rare-earth disilicate for thermal environmental barrier coating materials[J].Journal of the American Ceramic society,2022,105:4588-4594.
[14] WANG J,ZHOU Y,CHONG X Y,et al.Microstructure and thermal properties of a promising thermal barrier coating:YTaO₄[J].Ceramics International,2016,42(12):13876-13881.
[15] CHEN L,JIANG Y H,CHONG X Y,et al.Synthesis and thermophysical properties of RETa₃O₉ (RE=Ce,Nd,Sm,Eu,Gd,Dy,Er) ceramics as promising thermal barrier coatings[J].Journal of the American Ceramic Society,2018,101:1266-1278 .
[16] WANG J,WU F,ZOU R,et al.High-entropy ferroelastic rare-earth tantalite ceramic:(Y_0.2Ce_0.2Sm_0.2Gd_0.2Dy_0.2)TaO₄[J].Journal of the American Ceramic Society,2021,104(11):5873-5882.
[17] NITIN P P,PAUL G K.Low Thermal conductivity in garnets[J].Journal of the American Ceramic society,1997,80(4):1018-1020.
[18] LUO X W,LUO L R,ZHAO X F,et al.Single-phase rare-earth high-entropy zirconates with superior thermal and mechanical properties [J].Journal of the European Ceramic Society,2022,42( 5):2391-2399.
[19] WANG J,CHONG X Y,LV L,et al.High-entropy ferroelastic (10RE_0.1)TaO₄ ceramics with oxygen vacancies and improved thermophysical properties[J].Journal of Materials Science & Technology,2023,157:98-106.
[20] HE K,CHEN J J,WENG W X,et al.Microstructure and mechanical properties of plasma sprayed Al₂O₃-YSZ composite coatings[J].Vacuum,2018,151:209-220.
[21] JANG B K,MATSUBARA H.Hardness and Young’s modulus of nanoporous EB-PVD YSZ coatings by nanoindentation[J].Journal of Alloys and Compounds,2005,402(1-2):237-241.
[22] GADAG S,SUBBARAYAN G,BARKER W.Thermo-elastic properties of dense YSZ and porous Ni-ZrO₂ monolithic and isotropic materials[J].Journal of Materials Science,2006,41(4):1221-1232.
[23] WU D,YAO Y,SHAN X,et al.Equimolar YO_1.5 and TaO_2.5co-doped ZrO₂ as a potential CMAS-resistant material for thermal barrier coatings[J].Journal of the American Ceramic Society,2021,104(2):1132-1145.

Structure, properties and corrosion resistance of high entropy (Y_0.2Gd_0.2Dy_0.2La_0.2Sm_0.2)TaO₄ ceramic materials

(Y_0.2Gd_0.2Dy_0.2La_0.2Sm_0.2)TaO₄高熵陶瓷材料的结构、性能及抗侵蚀行为研究

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