Journal of Inorganic Materials, Volume. 40, Issue 4, 405(2025)
Figures & Tables(24)
S1. XRD patterns of the intermediate fibers (a) and the Si-C-O-Al fibers (b)
S2. Changes of mechanical properties of the SiC (SF) fibers with sintering temperature
S3. Tensile strength of SiC (SF) fibers after sintered at different temperatures
S4. Surface morphologies of the SiC (SF) fibers sintered at 1800 ℃ for different durations
4. Raman spectra (a) and XRD patterns (b) of the SiC (SF) fibers sintered at different temperatures
S5. XRD patterns of the SiC (SF) fibers sintered at 1800 ℃ for different durations
6. Schematic diagram of the sintering densification process of nearly stoichiometric polycrystalline SiC fibers
S6. Changes of mechanical properties of the SiC (SF) fibers with sintering time at 1800 ℃
S7. Tensile strength of SiC (SF) fibers sintered at 1800 ℃ for different durations
7. Cross-sectional morphologies of the SiC (SF) fibers sintered at 1800 ℃ for different durations
8. HRTEM images of the SiC (SF) fibers sintered at 1800 ℃ for different durations
S8. SEM images of fracture morphologies for the fibers F-1 (a-c), F-2 (d-f) and F-3 (g-i)
11. SAED patterns, TEM and HRTEM images of SiC (SF) and SiC (SG) fibers
Table 1. Chemical composition and mechanical properties of Si-C-O-Al fibers and intermediate fibers
View tableView in ArticleTable 1. Chemical composition and mechanical properties of Si-C-O-Al fibers and intermediate fibers
Sample O content/(%, in mass) C/Si atomic ratio Tensile strength/GPa Young’s modulus/GPa Diameter/μm Si-C-O-Al fiber 8.93 1.33 2.27 204 11.6 Intermediate SiC fiber 0.98 1.06 1.54 283 10.8
Table 1. Raman results of the SiC (SF) fibers sintered at 1600-2000 ℃ for 1 h
View tableView in ArticleTable 1. Raman results of the SiC (SF) fibers sintered at 1600-2000 ℃ for 1 h
Sample D peak/cm-1 G peak/cm-1 ID/IG Position FWHM Position FWHM SiC (SF)-1600-1 h 1357 56.0 1590 47.0 1.41 SiC (SF)-1800-1 h 1358 51.4 1593 42.2 1.01 SiC (SF)-2000-1 h 1357 49.3 1585 28.8 0.31
Table 2. Chemical composition (mass fraction) of the SiC (SF) fibers sintered at different temperatures
View tableView in ArticleTable 2. Chemical composition (mass fraction) of the SiC (SF) fibers sintered at different temperatures
Sample C/% Si/% O/% Al/% C/Si atomic ratio SiC (SF)-1600-1 h 31.88 67.50 0.80 <1.00 1.10 SiC (SF)-1700-1 h 32.37 66.31 0.82 <1.00 1.14 SiC (SF)-1800-1 h 31.48 67.41 0.61 <1.00 1.09 SiC (SF)-1900-1 h 33.04 66.14 0.32 <1.00 1.17 SiC (SF)-2000-1 h 38.27 61.13 0.10 <1.00 1.46
Table 3. Chemical composition (mass fraction) of the SiC (SF) fibers sintered at 1800 ℃ for different durations
View tableView in ArticleTable 3. Chemical composition (mass fraction) of the SiC (SF) fibers sintered at 1800 ℃ for different durations
Sample C/% Si/% O/% Al/% C/Si atomic ratio SiC (SF)-1800-10 min 31.82 66.93 0.75 <1.00 1.11 SiC (SF)-1800-1 h 31.48 67.41 0.61 <1.00 1.09 SiC (SF)-1800-2 h 31.54 67.96 0 <1.00 1.08
Table 4. Mechanical properties of SiC (SF) and SiC (SG) fibers
View tableView in ArticleTable 4. Mechanical properties of SiC (SF) and SiC (SG) fibers
Sample Tensile strength/ GPa Young’s modulus/ GPa Fiber diameter/ μm Chemical formula SiC (SF) 1.88 373 11.2 SiC1.04O0.02Al<0.01 SiC (SG) 2.96 268 11.6 SiC1.31O0.05
Tools
Get Citation
Copy Citation Text
Yanzi GOU, Weifeng KANG, Pengren WANG.
Paper Information
Category:
Received: Oct. 18, 2024
Accepted: --
Published Online: Sep. 2, 2025
The Author Email:
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20