Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Aviation carbon ceramic brake material and preparation method thereof
The invention discloses a preparation method of an aviation carbon-ceramic brake material, which comprises the following steps: enabling the centers of N hollow disc-shaped carbon fiber preforms to penetrate through an internal heat source heater to be overlapped and piled to form a stock column, placing the stock column in a chemical vapor deposition furnace, and controlling the distance between any two adjacent carbon fiber preforms to be 0.4-3.5 mm; the periphery of the upper end of the stock column is sealed with a hollow sealing material, so that a gas outlet is only located in the middle of the upper end of the stock column, at least six gas inlets are evenly formed in the side face of the lower end of the stock column, chemical vapor deposition is carried out with propylene as carbon source gas and nitrogen as diluent gas, the temperature of chemical vapor deposition ranges from 1020 DEG C to 1100 DEG C, and the temperature of chemical vapor deposition ranges from 1020 DEG C to 1100 DEG C; the temperature of the chemical vapor deposition is gradually reduced along with the increase of the deposition time, forming a carbon-carbon green body after the chemical vapor deposition, performing heat treatment to obtain a carbon-carbon porous body, and performing ceramization treatment to obtain the aviation carbon-ceramic brake material.
本发明公开了一种航空碳陶刹车材料的制备方法，将N个中空盘状的碳纤维预制体的中心穿过内热源发热器进行叠加堆砌形成料柱置于化学气相沉积炉中，控制任意相邻的两个碳纤维预制体的间距为0.4‑3.5mm，将料柱上端的四周用中空密封材料密封，使得出气口仅位于料柱的上端中部，至少6个进气口均匀设置于料柱的下端侧面，以丙稀作为碳源气体，氮气作为稀释气体进行化学气相沉积，所述化学气相沉积的温度为1020‑1100℃，且化学气相沉积的温度随沉积时间的增加逐步递减，化学气相沉积后，形成碳碳坯体，热处理获得碳碳多孔体，再经陶瓷化处理，获得航空碳陶刹车材料。
Aviation carbon ceramic brake material and preparation method thereof
The invention discloses a preparation method of an aviation carbon-ceramic brake material, which comprises the following steps: enabling the centers of N hollow disc-shaped carbon fiber preforms to penetrate through an internal heat source heater to be overlapped and piled to form a stock column, placing the stock column in a chemical vapor deposition furnace, and controlling the distance between any two adjacent carbon fiber preforms to be 0.4-3.5 mm; the periphery of the upper end of the stock column is sealed with a hollow sealing material, so that a gas outlet is only located in the middle of the upper end of the stock column, at least six gas inlets are evenly formed in the side face of the lower end of the stock column, chemical vapor deposition is carried out with propylene as carbon source gas and nitrogen as diluent gas, the temperature of chemical vapor deposition ranges from 1020 DEG C to 1100 DEG C, and the temperature of chemical vapor deposition ranges from 1020 DEG C to 1100 DEG C; the temperature of the chemical vapor deposition is gradually reduced along with the increase of the deposition time, forming a carbon-carbon green body after the chemical vapor deposition, performing heat treatment to obtain a carbon-carbon porous body, and performing ceramization treatment to obtain the aviation carbon-ceramic brake material.
本发明公开了一种航空碳陶刹车材料的制备方法，将N个中空盘状的碳纤维预制体的中心穿过内热源发热器进行叠加堆砌形成料柱置于化学气相沉积炉中，控制任意相邻的两个碳纤维预制体的间距为0.4‑3.5mm，将料柱上端的四周用中空密封材料密封，使得出气口仅位于料柱的上端中部，至少6个进气口均匀设置于料柱的下端侧面，以丙稀作为碳源气体，氮气作为稀释气体进行化学气相沉积，所述化学气相沉积的温度为1020‑1100℃，且化学气相沉积的温度随沉积时间的增加逐步递减，化学气相沉积后，形成碳碳坯体，热处理获得碳碳多孔体，再经陶瓷化处理，获得航空碳陶刹车材料。
Aviation carbon ceramic brake material and preparation method thereof
一种航空碳陶刹车材料及其制备方法
LIU FEIXIANG (Autor:in) / CHEN LINGTAO (Autor:in) / TAN XINYE (Autor:in) / XIONG JIE (Autor:in)
30.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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