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Boron nitride modified silicon carbide fiber growth carbon nanotube ceramic matrix composite material and preparation method thereof
The invention provides a boron nitride modified silicon carbide fiber growth carbon nanotube ceramic matrix composite material and a preparation method thereof, the preparation method comprises the following steps: step S1, soaking boron nitride modified silicon carbide fibers in a ferrocene xylene solution with the concentration of 0.02-0.2 g/ml for 24-72 h; s2, argon serving as carrier gas and hydrogen serving as protective gas are introduced into the high-temperature tubular furnace, the temperature is increased to 600-1000 DEG C, and the temperature increasing rate is 5-15 DEG C/min; s3, the catalyst solution in the step S1 is diffused into a high-temperature tube furnace at the diffusion speed of 0.1-0.5 sccm, acetylene of 1-30 sccm serves as a carbon source to be introduced into the high-temperature tube furnace, the reaction time is 5-60 min, and the boron nitride modified silicon carbide fiber growth carbon nanotube ceramic matrix composite material is obtained. According to the preparation method provided by the invention, the multi-interface synergistic toughening effect is realized; the macroscopic mechanical property of the composite material is improved by controlling conditions such as morphology, growth density and length of the carbon nanotubes.
本发明提供一种氮化硼改性碳化硅纤维生长碳纳米管陶瓷基复合材料及其制备方法，制备方法包括如下步骤：步骤S1，将氮化硼改性碳化硅纤维浸泡在浓度为0.02‑0.2g/ml的二茂铁二甲苯溶液中，浸泡时间为24‑72h；步骤S2，以氩气为载气，氢气为保护气通入高温管式炉中，升温至600‑1000℃，升温速率为5‑15℃/min；步骤S3，将步骤S1的催化剂溶液以0.1‑0.5sccm的扩散速度扩散到高温管式炉中，并将1‑30sccm的乙炔为碳源通入高温管式炉中，反应时间为5‑60min，得到氮化硼改性碳化硅纤维生长碳纳米管陶瓷基复合材料。本发明提供的制备方法，实现了多界面协同增韧的作用；通过控制碳纳米管形貌、生长密度、长度等条件，提高复合材料的宏观力学性能。
Boron nitride modified silicon carbide fiber growth carbon nanotube ceramic matrix composite material and preparation method thereof
The invention provides a boron nitride modified silicon carbide fiber growth carbon nanotube ceramic matrix composite material and a preparation method thereof, the preparation method comprises the following steps: step S1, soaking boron nitride modified silicon carbide fibers in a ferrocene xylene solution with the concentration of 0.02-0.2 g/ml for 24-72 h; s2, argon serving as carrier gas and hydrogen serving as protective gas are introduced into the high-temperature tubular furnace, the temperature is increased to 600-1000 DEG C, and the temperature increasing rate is 5-15 DEG C/min; s3, the catalyst solution in the step S1 is diffused into a high-temperature tube furnace at the diffusion speed of 0.1-0.5 sccm, acetylene of 1-30 sccm serves as a carbon source to be introduced into the high-temperature tube furnace, the reaction time is 5-60 min, and the boron nitride modified silicon carbide fiber growth carbon nanotube ceramic matrix composite material is obtained. According to the preparation method provided by the invention, the multi-interface synergistic toughening effect is realized; the macroscopic mechanical property of the composite material is improved by controlling conditions such as morphology, growth density and length of the carbon nanotubes.
本发明提供一种氮化硼改性碳化硅纤维生长碳纳米管陶瓷基复合材料及其制备方法，制备方法包括如下步骤：步骤S1，将氮化硼改性碳化硅纤维浸泡在浓度为0.02‑0.2g/ml的二茂铁二甲苯溶液中，浸泡时间为24‑72h；步骤S2，以氩气为载气，氢气为保护气通入高温管式炉中，升温至600‑1000℃，升温速率为5‑15℃/min；步骤S3，将步骤S1的催化剂溶液以0.1‑0.5sccm的扩散速度扩散到高温管式炉中，并将1‑30sccm的乙炔为碳源通入高温管式炉中，反应时间为5‑60min，得到氮化硼改性碳化硅纤维生长碳纳米管陶瓷基复合材料。本发明提供的制备方法，实现了多界面协同增韧的作用；通过控制碳纳米管形貌、生长密度、长度等条件，提高复合材料的宏观力学性能。
Boron nitride modified silicon carbide fiber growth carbon nanotube ceramic matrix composite material and preparation method thereof
一种氮化硼改性碳化硅纤维生长碳纳米管陶瓷基复合材料及其制备方法
LIU YU (Autor:in) / YUE JIANLING (Autor:in) / YAN BING (Autor:in)
21.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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