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Mechanical and thermal properties of h-BN based composite containing dual glass phases at elevated temperatures
Chen, Juanjuan1,2; Chen, Jixin1; Zhao, Guorui1,2; Hu, Minmin1,3; Lei, Yiming1,3; Li, Yueming1,2; Zhang, Xi1,4; Li, Jialin1; Li, Meishuan1
Corresponding AuthorChen, Jixin(jxchen@imr.ac.cn)
2018-12-01
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Volume38Issue:15Pages:4867-4873
AbstractHigh-temperature mechanical and thermal properties of h-BN based composite containing amorphous silica and Yb-riched silicate glass phases were systematically investigated in this work. Owing to anisotropic microstructure of h-BN matrix, the obtained composite demonstrates anisotropic mechanical and thermal properties. The composite possesses higher elastic modulus at 1673 K than that at room temperature and presents excellent high-temperature stiffness. Flexural strengths in parallel and perpendicular directions reach 496 +/- 22 and 258 +/- 21 MPa at 1073 K, respectively, and increases by 74 and 66% compared with the room-temperature strengths of 285 +/- 4 and 155 +/- 5 MPa. The composite containing dual glass phases shows lower coefficients of thermal expansion in the temperature range of 473-900 K, the values are -1.4 x 10(-6) and 0.3 x 10(-6) K-1 for the perpendicular and parallel directions, respectively. Thermal conductivities in the perpendicular and parallel directions at 373 K are 24.8 and 14.8 W m(-1) K-1, respectively, and then decrease to 14.9 and 9.3 W m(-1) K-1 at 1473 K.
Keywordh-BN Dual glass phases Anisotropy High-temperature flexural strength Thermal properties
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.jeurceramsoc.2018.07.012
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[50802099] ; National Natural Science Foundation of China[51072201]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
WOS IDWOS:000444664300006
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/129444
Collection中国科学院金属研究所
Corresponding AuthorChen, Jixin
Affiliation1.Chinese Acad Sci, Inst Met Res, High Performance Ceram Div, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
4.Xian Golden Mt Ceram Composites Co Ltd, Xian 710065, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Chen, Juanjuan,Chen, Jixin,Zhao, Guorui,et al. Mechanical and thermal properties of h-BN based composite containing dual glass phases at elevated temperatures[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2018,38(15):4867-4873.
APA Chen, Juanjuan.,Chen, Jixin.,Zhao, Guorui.,Hu, Minmin.,Lei, Yiming.,...&Li, Meishuan.(2018).Mechanical and thermal properties of h-BN based composite containing dual glass phases at elevated temperatures.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,38(15),4867-4873.
MLA Chen, Juanjuan,et al."Mechanical and thermal properties of h-BN based composite containing dual glass phases at elevated temperatures".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 38.15(2018):4867-4873.
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