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Method for preparing ceramic matrix composite material through SiC nano-wire modified ceramic matrix composite material interface
The present invention relates to a method for preparing a ceramic matrix composite material through a SiC nano-wire modified ceramic matrix composite material interface. The method comprises: immersing a porous fiber preform in a catalyst solution; in a CVD furnace, carrying out in-situ SiC nano-wire deposition by using methyltrichlorosilane MTS as a silicon source, using argon Ar as a dilution gas, and using hydrogen as a carrier gas, wherein the dilution ratio is 30-90; and preparing a SiC matrix by using a CVI process, using methyltrichlorosilane MTS as a silicon source, and using argon Ar as a dilution gas so as to obtain the compact SiC nano-wire modified ceramic matrix composite material, wherein the dilution ratio is 9-11. According to the present invention, the reinforcing and toughening mechanism of the SiC nano-wire is used to improve the mechanical property of the material; and the bending strength of the composite material adopting the SiC nano-wires as the interface is increased by 26.7% (Figure 6) compared with the PyC interface composite material under the same process, and the interface antioxidant property of the interface can be improved.
Method for preparing ceramic matrix composite material through SiC nano-wire modified ceramic matrix composite material interface
The present invention relates to a method for preparing a ceramic matrix composite material through a SiC nano-wire modified ceramic matrix composite material interface. The method comprises: immersing a porous fiber preform in a catalyst solution; in a CVD furnace, carrying out in-situ SiC nano-wire deposition by using methyltrichlorosilane MTS as a silicon source, using argon Ar as a dilution gas, and using hydrogen as a carrier gas, wherein the dilution ratio is 30-90; and preparing a SiC matrix by using a CVI process, using methyltrichlorosilane MTS as a silicon source, and using argon Ar as a dilution gas so as to obtain the compact SiC nano-wire modified ceramic matrix composite material, wherein the dilution ratio is 9-11. According to the present invention, the reinforcing and toughening mechanism of the SiC nano-wire is used to improve the mechanical property of the material; and the bending strength of the composite material adopting the SiC nano-wires as the interface is increased by 26.7% (Figure 6) compared with the PyC interface composite material under the same process, and the interface antioxidant property of the interface can be improved.
Method for preparing ceramic matrix composite material through SiC nano-wire modified ceramic matrix composite material interface
LIU YONGSHENG (author) / TIAN ZHUO (author) / ZHANG CHENGYU (author) / WAN JIAJIA (author) / DONG NING (author) / CHENG LAIFEI (author)
2016-01-13
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
Forming method of ceramic matrix composite material and ceramic matrix composite material
| European Patent Office | 2022