Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing carbon fiber reinforced SiC ceramic-based composite material through 3D printing
The invention belongs to the field of composite materials, and particularly discloses a method for preparing a carbon fiber reinforced SiC ceramic-based composite material through 3D printing, which comprises the following steps: mixing SiC powder with chopped carbon fibers and a binder to obtain mixed powder; carrying out selective laser sintering forming on the mixed powder to obtain a SiC/chopped carbon fiber green body; removing powder from the surface of the SiC/chopped carbon fiber green body, carbonizing, impregnating the SiC/chopped carbon fiber green body into an organic carbon precursor solution, drying, and carrying out secondary carbonization to obtain a SiC/chopped carbon fiber/carbon blank; and carrying out densification treatment on the carbon fiber reinforced SiC ceramic matrix composite material by adopting a liquid phase siliconizing method to obtain the carbon fiber reinforced SiC ceramic matrix composite material. According to the method, secondary carbonization iscarried out, so that the strength of the green body can be increased by virtue of a residual phase after the carbon precursor is solidified and pyrolyzed, subsequent operation is facilitated, and thetoughening effect of the chopped carbon fiber is exerted; in addition, spatial reticular secondary carbon formed after carbonization and cracking can further enhance the mechanical properties of the composite material.
本发明属于复合材料领域，并具体公开了3D打印制备碳纤维增强SiC陶瓷基复合材料的方法，该方法包括：将SiC粉体与短切碳纤维、粘结剂混合得到混合粉体；利用混合粉体进行激光选区烧结成形，得到SiC/短切碳纤维生坯；将SiC/短切碳纤维生坯表面清粉后进行碳化处理，然后对其浸渗有机碳前驱体溶液，干燥后进行二次碳化处理得到SiC/短切碳纤维/碳素坯；采用液相渗硅法对其进行致密化处理，获得碳纤维增强SiC陶瓷基复合材料。本发明进行二次碳化不仅可以借助碳前驱体固化热解后残留相，增大坯体强度便于后续操作，而且有利于短切碳纤维增韧作用的发挥；此外，碳化裂解后形成的空间网状次生碳可以进一步增强复合材料的力学性能。
Method for preparing carbon fiber reinforced SiC ceramic-based composite material through 3D printing
The invention belongs to the field of composite materials, and particularly discloses a method for preparing a carbon fiber reinforced SiC ceramic-based composite material through 3D printing, which comprises the following steps: mixing SiC powder with chopped carbon fibers and a binder to obtain mixed powder; carrying out selective laser sintering forming on the mixed powder to obtain a SiC/chopped carbon fiber green body; removing powder from the surface of the SiC/chopped carbon fiber green body, carbonizing, impregnating the SiC/chopped carbon fiber green body into an organic carbon precursor solution, drying, and carrying out secondary carbonization to obtain a SiC/chopped carbon fiber/carbon blank; and carrying out densification treatment on the carbon fiber reinforced SiC ceramic matrix composite material by adopting a liquid phase siliconizing method to obtain the carbon fiber reinforced SiC ceramic matrix composite material. According to the method, secondary carbonization iscarried out, so that the strength of the green body can be increased by virtue of a residual phase after the carbon precursor is solidified and pyrolyzed, subsequent operation is facilitated, and thetoughening effect of the chopped carbon fiber is exerted; in addition, spatial reticular secondary carbon formed after carbonization and cracking can further enhance the mechanical properties of the composite material.
本发明属于复合材料领域，并具体公开了3D打印制备碳纤维增强SiC陶瓷基复合材料的方法，该方法包括：将SiC粉体与短切碳纤维、粘结剂混合得到混合粉体；利用混合粉体进行激光选区烧结成形，得到SiC/短切碳纤维生坯；将SiC/短切碳纤维生坯表面清粉后进行碳化处理，然后对其浸渗有机碳前驱体溶液，干燥后进行二次碳化处理得到SiC/短切碳纤维/碳素坯；采用液相渗硅法对其进行致密化处理，获得碳纤维增强SiC陶瓷基复合材料。本发明进行二次碳化不仅可以借助碳前驱体固化热解后残留相，增大坯体强度便于后续操作，而且有利于短切碳纤维增韧作用的发挥；此外，碳化裂解后形成的空间网状次生碳可以进一步增强复合材料的力学性能。
Method for preparing carbon fiber reinforced SiC ceramic-based composite material through 3D printing
3D打印制备碳纤维增强SiC陶瓷基复合材料的方法
LI CHENHUI (Autor:in) / ZOU YANG (Autor:in) / SHI YUSHENG (Autor:in) / HU LIANG (Autor:in) / LIU JIANG'AN (Autor:in) / WU JIAMIN (Autor:in)
17.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
| Europäisches Patentamt | 2023
METHOD FOR PREPARING, BY 3D PRINTING, CARBON FIBER REINFORCED SIC CERAMIC MATRIX COMPOSITE MATERIAL
| Europäisches Patentamt | 2021
Method for preparing fiber reinforced ceramic matrix composite material
| Europäisches Patentamt | 2022
Method for preparing carbon-reinforced metal-ceramic composite material
| Europäisches Patentamt | 2022