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Carbon/carbon composite material connection method resisting high-temperature molten salt corrosion
The invention discloses a carbon/carbon composite material connection method resisting high-temperature molten salt corrosion. According to the invention, nickel powder and silicon powder are mixed according to a Ni:Si molar ratio of 1:2-3:1; the mixture is alloyed with a high-energy ball milling method, such that Ni-Si compound alloy powder is obtained; the Ni-Si compound alloy powder is uniformly applied on connection surfaces of carbon/carbon composite materials; the materials with the powder are heated to a temperature of 900-1200 DEG C with a heating speed of 10-15 DEG C/min under an environment with a vacuum degree lower than 10<-2>Pa, and the temperature is maintained for 3h; and the temperature of the materials is then reduced to room temperature with a cooling speed of 50-100 DEG C/min. The invention also discloses a carbon/carbon composite material member which has carbon/carbon composite material parts connected with the above method. Compared to prior arts, with the method provided by the invention, an obtained connection layer has excellent high-temperature molten salt corrosion resistance, greatly improved overall connection strength, and more uniform connection strength distribution.
Carbon/carbon composite material connection method resisting high-temperature molten salt corrosion
The invention discloses a carbon/carbon composite material connection method resisting high-temperature molten salt corrosion. According to the invention, nickel powder and silicon powder are mixed according to a Ni:Si molar ratio of 1:2-3:1; the mixture is alloyed with a high-energy ball milling method, such that Ni-Si compound alloy powder is obtained; the Ni-Si compound alloy powder is uniformly applied on connection surfaces of carbon/carbon composite materials; the materials with the powder are heated to a temperature of 900-1200 DEG C with a heating speed of 10-15 DEG C/min under an environment with a vacuum degree lower than 10<-2>Pa, and the temperature is maintained for 3h; and the temperature of the materials is then reduced to room temperature with a cooling speed of 50-100 DEG C/min. The invention also discloses a carbon/carbon composite material member which has carbon/carbon composite material parts connected with the above method. Compared to prior arts, with the method provided by the invention, an obtained connection layer has excellent high-temperature molten salt corrosion resistance, greatly improved overall connection strength, and more uniform connection strength distribution.
Carbon/carbon composite material connection method resisting high-temperature molten salt corrosion
ZHANG DONGSHENG (Autor:in) / XIA HUIHAO (Autor:in) / ZHOU XINGTAI (Autor:in) / YANG XINMEI (Autor:in) / SONG JINLIANG (Autor:in)
18.11.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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