Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Prefabricated body of C/SiC ceramic-based composite material and preparation method of prefabricated body
The invention relates to a ceramic-based composite material, in particular to a prefabricated body of a C/SiC ceramic-based composite material and a preparation method of the prefabricated body, which are used for solving the defects that the period of preparing the C/SiC ceramic-based composite material by adopting CVI (Chemical Vapor Infiltration) is relatively long, the porosity of a finished product is relatively large and the finished product with relatively large thickness is difficult to manufacture due to the fact that deposition depends on a diffusion effect. The matrix of the preform of the C/SiC ceramic-based composite material is internally provided with a plurality of pore channels, so that the open porosity of the preform is increased, and a gaseous precursor can be in sufficient diffusion contact with fiber bundles in the preform, thereby improving the rapid conversion of the C/SiC matrix, effectively improving the reaction depth of the C/SiC matrix, and further preparing a thicker finished product; the preparation period of a finished product can be effectively shortened.
本发明涉及陶瓷基复合材料，具体涉及一种C/SiC陶瓷基复合材料的预制体及其制备方法，用于解决采用CVI制备C/SiC陶瓷基复合材料的周期较长，而且其沉积是依靠扩散作用，导致成品的孔隙率会比较大，难以制造厚度较大成品的不足之处。该C/SiC陶瓷基复合材料的预制体的基体内设置有多个气孔通道，增加了预制体的开气孔率，使气态先驱体可以充分与预制体内部的纤维丝束扩散接触，从而提高了C/SiC基体的快速转化，有效提升C/SiC基体的反应深度，进而可以制备更厚的成品，并可有效缩短成品的制备周期。
Prefabricated body of C/SiC ceramic-based composite material and preparation method of prefabricated body
The invention relates to a ceramic-based composite material, in particular to a prefabricated body of a C/SiC ceramic-based composite material and a preparation method of the prefabricated body, which are used for solving the defects that the period of preparing the C/SiC ceramic-based composite material by adopting CVI (Chemical Vapor Infiltration) is relatively long, the porosity of a finished product is relatively large and the finished product with relatively large thickness is difficult to manufacture due to the fact that deposition depends on a diffusion effect. The matrix of the preform of the C/SiC ceramic-based composite material is internally provided with a plurality of pore channels, so that the open porosity of the preform is increased, and a gaseous precursor can be in sufficient diffusion contact with fiber bundles in the preform, thereby improving the rapid conversion of the C/SiC matrix, effectively improving the reaction depth of the C/SiC matrix, and further preparing a thicker finished product; the preparation period of a finished product can be effectively shortened.
本发明涉及陶瓷基复合材料，具体涉及一种C/SiC陶瓷基复合材料的预制体及其制备方法，用于解决采用CVI制备C/SiC陶瓷基复合材料的周期较长，而且其沉积是依靠扩散作用，导致成品的孔隙率会比较大，难以制造厚度较大成品的不足之处。该C/SiC陶瓷基复合材料的预制体的基体内设置有多个气孔通道，增加了预制体的开气孔率，使气态先驱体可以充分与预制体内部的纤维丝束扩散接触，从而提高了C/SiC基体的快速转化，有效提升C/SiC基体的反应深度，进而可以制备更厚的成品，并可有效缩短成品的制备周期。
Prefabricated body of C/SiC ceramic-based composite material and preparation method of prefabricated body
一种C/SiC陶瓷基复合材料的预制体及其制备方法
TIAN LULU (Autor:in) / LIAO JUNGANG (Autor:in) / MA LINA (Autor:in) / XING CHAOYANG (Autor:in) / WU YAMING (Autor:in) / WANG JIAMIN (Autor:in)
26.07.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2021