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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
Tian, Zhilin; Zheng, Liya; Wang, Jiemin; Wan, Peng; Li, Jialin; Wang, Jingyang; jywang@imr.ac.cn
2016
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Volume36Issue:1Pages:189-202
AbstractX2-RE2SiO5 orthosilicates are promising candidate environmental/thermal barrier coating (ETBC) materials for silicon-based ceramics because of their excellent durability in high-temperature environments and potential low thermal conductivities. We herein present the mechanical and thermal properties of X2-RE2SiO5 orthosilicates based on theoretical explorations of their elastic stiffness and thermal conductivity, and experimental evaluations of the macroscopic performances of dense specimens from room to high temperatures. Mechanical and thermal properties may be grouped into two: those that are sensitive to the rare-earth (RE) species, including flexural strength, elastic modulus, and thermal shock resistance, and those that are less sensitive to the RE species, including thermal conductivity, thermal expansion coefficient, and brittle-to-ductile transition temperature (BDTT). The orthosilicates show excellent elastic stiffness at high temperatures, high BDTTs, very low experimental thermal conductivities, and compatible thermal expansion coefficients. The reported information provides important material selection and optimization guidelines for X2-RE2SiO5 as ETBC candidates. (C) 2015 Elsevier Ltd. All rights reserved.
description.department[tian, zhilin ; zheng, liya ; wang, jiemin ; wan, peng ; li, jialin ; wang, jingyang] chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, shenyang 110016, peoples r china ; [tian, zhilin ; zheng, liya ; wan, peng] univ chinese acad sci, beijing 100049, peoples r china
KeywordRare-earth Silicates Environmental Barrier Coating Mechanical Property Thermal Property
Funding OrganizationNatural Science Foundation of China [51032006, 51372252]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75210
Collection中国科学院金属研究所
Corresponding Authorjywang@imr.ac.cn
Recommended Citation
GB/T 7714
Tian, Zhilin,Zheng, Liya,Wang, Jiemin,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]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2016,36(1):189-202.
APA Tian, Zhilin.,Zheng, Liya.,Wang, Jiemin.,Wan, Peng.,Li, Jialin.,...&jywang@imr.ac.cn.(2016).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.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,36(1),189-202.
MLA Tian, Zhilin,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".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 36.1(2016):189-202.
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