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Fabrication and mechanical properties of h-BN based composites containing dual glass phases
Chen, Juanjuan1,2; Chen, Jixin1; Zhang, Xi1,3; He, Minmin1,2; Li, Meishuan1
Corresponding AuthorChen, Jixin(jxchen@imr.ac.cn)
2018-08-01
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Volume38Issue:9Pages:3210-3216
AbstractIn this work, h-BN based composites containing amorphous silica and ytterbium silicate glass phases were successfully fabricated by in situ hot pressing process. The powder mixtures of h-BN, Yb2O3, SiO2 and sintering additive (Al2O3) were hot pressed at 1880 C for 1 h under 30 MPa in Ar atmosphere. In the composites, beta-Yb2Si2O7 phase produced from the reaction between Yb2O3 and SiO2 disappears completely and transforms to Yb-Si-Al-O glass when the amount of Al2O3 is >= 15 wt.%. The Vickers hardness, flexural strength, and compressive strength reached the maximum values of 2.38 +/- 0.08 GPa, 337 +/- 22 MPa and 950 +/- 34 MPa, respectively, as 1.5 wt.% Al2O3 was added. The strengthening effects were attributed to the fine spherical microstructure of Yb-Si-Al-O glass particles, strong [AlO4] coordination state, and residual compressive stress in glass phases.
Keywordh-BN Dual glass phases Vitrification Coordination state Strengthening
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.jeurceramsoc.2018.02.035
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:000433014200020
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128228
Collection中国科学院金属研究所
Corresponding AuthorChen, Jixin
Affiliation1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, High Performance Ceram Div, Shenyang 110016, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Xian Golden Mt Ceram Composites Co Ltd, Xian 710065, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Chen, Juanjuan,Chen, Jixin,Zhang, Xi,et al. Fabrication and mechanical properties of h-BN based composites containing dual glass phases[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2018,38(9):3210-3216.
APA Chen, Juanjuan,Chen, Jixin,Zhang, Xi,He, Minmin,&Li, Meishuan.(2018).Fabrication and mechanical properties of h-BN based composites containing dual glass phases.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,38(9),3210-3216.
MLA Chen, Juanjuan,et al."Fabrication and mechanical properties of h-BN based composites containing dual glass phases".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 38.9(2018):3210-3216.
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