Journal of Inorganic Materials, Volume. 38, Issue 5, 569(2023)
Figures & Tables(10)
1. Si2p XPS spectra of (a) F-II, (b) F-II-1800 ℃, (c)F-III, and (d)F-III-1800 ℃ fibers
3. SEM morphologies of (a-c) F-II, (d-h) F-II-1800 ℃, (i-l) F-III, and (m-p) F-III-1800 ℃ fibers
4. TEM and HRTEM images of (a-e) F-II fibers, (f-j)F-II-1800 ℃ fibers, and (k-o) F-III-1800 ℃ fibers
5. (a-c) TEM images and (d-f) elemental distributions of the F-II-1800 ℃ fibers
6. Schematic diagram of (a) formation process of skin-core structure of F-II-1800 ℃and (b) thermal stability of F-III fibers
7. (a) Representative strain-stress curves and (b) Weibull plots of the fibers
8. Fracture morphologies of (a, b) F-II, (c) F-II-1800℃, and (d) F-III fibers
Table 1. Composition and general properties of SiC fibers before and after heat treatment
View tableView in ArticleTable 1. Composition and general properties of SiC fibers before and after heat treatment
Parameter F-II F-II-1800 ℃ F-III F-III-1800 ℃ C/Si 1.34 1.42 1.08 1.08 Al content/ (%, in mass) / / <1.00 <1.00 O content/ (%, in mass) 0.98 0.53 0.07 0.05 Diameter/μm 12.0 11.9 9.9 9.9 Density/ (g·cm-3) 2.72 2.66 3.08 3.09 Tensile strength/ GPa 2.7 0.9 1.8 1.8 Elastic modulus/GPa 260 207 372 366
Table 2. Raman characteristics of free carbon phase of the fibers
View tableView in ArticleTable 2. Raman characteristics of free carbon phase of the fibers
Sample D Band G Band ID/IG La/nm Position/cm-1 FWHM Position/cm-1 FWHM F-II 1356.3 112.5 1599.8 122.7 1.39 13.8 F-II-1800 ℃ 1351.3 59.9 1586.8 63.2 1.09 17.6 F-III 1352.9 79.9 1590.1 89.0 1.12 17.2 F-III-1800 ℃ 1354.3 64.9 1593.0 72.8 1.18 16.3
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Shuang WU, Yanzi GOU, Yongshou WANG, Quzhi SONG, Qingyu ZHANG, Yingde WANG.
Paper Information
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Received: Sep. 19, 2022
Accepted: --
Published Online: Oct. 17, 2023
The Author Email: GOU Yanzi (y.gou2012@hotmail.com), WANG Yingde (wangyingde@nudt.edu.cn)
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