A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a preparation method of an ultrahigh-temperature silicon carbide ceramic-based composite material and the ultrahigh-temperature silicon carbide ceramic-based composite material. The invention discloses a preparation method of an ultrahigh-temperature silicon carbide ceramic-based composite material. The preparation method comprises the following steps: (1) cutting two-dimensional plain silicon carbide fiber cloth into a square shape; (2) laminating the cut silicon carbide fiber cloth, sewing the silicon carbide fiber cloth into a whole by using a silicon carbide fiber suture line, and shaping to obtain a silicon carbide fiber preform; (3) putting the silicon carbide fiber preform into a chemical vapor deposition furnace for chemical vapor deposition to prepare a pyrolytic carbon interface layer; (4) preparing dipping slurry from ceramic powder containing anti-ablation components and the precursor solution; (5) performing vacuum high-pressure impregnation on the prefabricated part in the step (3) in the impregnation liquid in the step (4); (6) taking out the prefabricated part in the step (5), draining and curing under high pressure; (7) carrying out high-temperature cracking on the prefabricated part subjected to high-pressure curing; and (8) repeating the steps (5)-(7) until the weight change of the preform is less than a target value or a set value. The oxidation resistance and ablation resistance of the silicon carbide ceramic-based composite material are improved.
一种超高温碳化硅陶瓷基复合材料的制备方法及超高温碳化硅陶瓷基复合材料。本发明公开了一种超高温碳化硅陶瓷基复合材料的制备方法，包括以下步骤：①将二维平纹碳化硅纤维布裁剪为方形；②将裁剪好的碳化硅纤维布叠层，并用碳化硅纤维缝合线缝合为一整体，定型得到碳化硅纤维预制体；③将碳化硅纤维预制体放入化学气相沉积炉中进行化学气相沉积，制备热解碳界面层；④将含有抗烧蚀组元的陶瓷粉体与前驱体溶液配制成浸渍浆料；⑤将③中的预制件在④中的浸渍液中真空高压浸渍；⑥将⑤中的预制件取出沥干后高压固化；⑦将⑥高压固化后的预制件高温裂解；⑧反复进行⑤～⑦步，直至预制体的重量变化小于目标值或设定值。本发明提高了碳化硅陶瓷基复合材料的抗氧化性能和抗烧蚀性能。
The invention discloses a preparation method of an ultrahigh-temperature silicon carbide ceramic-based composite material and the ultrahigh-temperature silicon carbide ceramic-based composite material. The invention discloses a preparation method of an ultrahigh-temperature silicon carbide ceramic-based composite material. The preparation method comprises the following steps: (1) cutting two-dimensional plain silicon carbide fiber cloth into a square shape; (2) laminating the cut silicon carbide fiber cloth, sewing the silicon carbide fiber cloth into a whole by using a silicon carbide fiber suture line, and shaping to obtain a silicon carbide fiber preform; (3) putting the silicon carbide fiber preform into a chemical vapor deposition furnace for chemical vapor deposition to prepare a pyrolytic carbon interface layer; (4) preparing dipping slurry from ceramic powder containing anti-ablation components and the precursor solution; (5) performing vacuum high-pressure impregnation on the prefabricated part in the step (3) in the impregnation liquid in the step (4); (6) taking out the prefabricated part in the step (5), draining and curing under high pressure; (7) carrying out high-temperature cracking on the prefabricated part subjected to high-pressure curing; and (8) repeating the steps (5)-(7) until the weight change of the preform is less than a target value or a set value. The oxidation resistance and ablation resistance of the silicon carbide ceramic-based composite material are improved.
一种超高温碳化硅陶瓷基复合材料的制备方法及超高温碳化硅陶瓷基复合材料。本发明公开了一种超高温碳化硅陶瓷基复合材料的制备方法，包括以下步骤：①将二维平纹碳化硅纤维布裁剪为方形；②将裁剪好的碳化硅纤维布叠层，并用碳化硅纤维缝合线缝合为一整体，定型得到碳化硅纤维预制体；③将碳化硅纤维预制体放入化学气相沉积炉中进行化学气相沉积，制备热解碳界面层；④将含有抗烧蚀组元的陶瓷粉体与前驱体溶液配制成浸渍浆料；⑤将③中的预制件在④中的浸渍液中真空高压浸渍；⑥将⑤中的预制件取出沥干后高压固化；⑦将⑥高压固化后的预制件高温裂解；⑧反复进行⑤～⑦步，直至预制体的重量变化小于目标值或设定值。本发明提高了碳化硅陶瓷基复合材料的抗氧化性能和抗烧蚀性能。
Preparation method of ultrahigh-temperature silicon carbide ceramic-based composite material and ultrahigh-temperature silicon carbide ceramic-based composite material
一种超高温碳化硅陶瓷基复合材料的制备方法及超高温碳化硅陶瓷基复合材料
LI TAO (author)
2022-03-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Preparation method of lamellar silicon carbide/zirconium carbide ultrahigh-temperature ceramic
| European Patent Office | 2015
| European Patent Office | 2020
| European Patent Office | 2024
| European Patent Office | 2015
| European Patent Office | 2015