J. Mater. Sci. Technol. ›› 2017, Vol. 33 ›› Issue (5): 481-486.DOI: 10.1016/j.jmst.2016.09.003
Special Issue: 2017腐蚀与防护专辑
• Orginal Article • Previous Articles Next Articles
Huang Dong1, Zhang Mingyu2,*, Huang Qizhong2,*(), Wang Liping2, Tong Kai2
Received:
2015-10-22
Revised:
2016-01-13
Accepted:
2016-01-21
Online:
2017-05-20
Published:
2017-05-17
Contact:
Zhang Mingyu,Huang Qizhong
About author:
These authors contributed equally to this work.
Huang Dong, Zhang Mingyu, Huang Qizhong, Wang Liping, Tong Kai. Mechanical Property, Oxidation and Ablation Resistance of C/C-ZrB2-ZrC-SiC Composite Fabricated by Polymer Infiltration and Pyrolysis with Preform of Cf/ZrB2[J]. J. Mater. Sci. Technol., 2017, 33(5): 481-486.
Fig.1. Microstructure of the C/C-ZrB2-ZrC-SiC composites: (a) SEM image of surface; (b) BSE image of surface; (c) the outside ceramic coating on the nonwoven carbon fabric layer; (d) the outside ceramic coating on the short carbon fibers layer; (e) nonwoven carbon fabric layer; (f) short carbon fibers layer.
Sample | PIP cycles | Density (g/cm3) | Bending strength (MPa) | Mass ablation rate (120 s) (mg cm-2 s-1) | Linear ablation rate (120 s) (μm s-1) |
---|---|---|---|---|---|
C/C-ZrC-SiC | 17-20 | 2.01 | 85.5 | 13.15 ± 0.07 | 6.84 ± 0.08 |
C/C-ZrB2-ZrC-SiC | 6-8 | 1.98 | 145.3 | 4.65 ± 0.12 | 2.46 ± 0.05 |
Table 1. Properties comparison of C/C-ZrC-SiC and C/C-ZrB2-ZrC-SiC composites
Sample | PIP cycles | Density (g/cm3) | Bending strength (MPa) | Mass ablation rate (120 s) (mg cm-2 s-1) | Linear ablation rate (120 s) (μm s-1) |
---|---|---|---|---|---|
C/C-ZrC-SiC | 17-20 | 2.01 | 85.5 | 13.15 ± 0.07 | 6.84 ± 0.08 |
C/C-ZrB2-ZrC-SiC | 6-8 | 1.98 | 145.3 | 4.65 ± 0.12 | 2.46 ± 0.05 |
Fig.5. Fracture surfaces the C/C-ZrB2-ZrC-SiC composite: (a) BSE image of the fracture surface of the C/C-ZrB2-ZrC-SiC composites; (b) higher magnification image.
Fig.7. 7. Microstructure of the surface of the C/C-ZrB2-ZrC-SiC composites after oxidation: (a) surface; (b) high magnification image of the area framed by white line in (a); (c) cross section; (d) line scan of EDS shows the diffusion of O2 in ceramic matrices.
Fig.10. Schematic diagram of the ablation test: (a) C/C-ZrB2-ZrC-SiC composite; (b) ablation in nonwoven carbon fabric layer; (c) ablation in short carbon fibers layer.
Fig.11. Microstructure of the nonwoven carbon fabric layer and the short carbon layer after the ceramic coating is peeled off: (a) nonwoven carbon fabric layer; (b) high magnification of (a); (c) short carbon layer; (d) high magnification of (c).
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