Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Silicon carbide ceramic for photocuring molding and reaction combination method thereof
The invention discloses a silicon carbide ceramic for photocuring molding and a reaction bonding method thereof, and the reaction bonding method comprises the following steps: S1, preparing a silicon carbide prefabricated member; s2, silicon powder and asphalt are placed in a container, the silicon carbide prefabricated part is placed above the silicon powder and the asphalt, the whole silicon carbide prefabricated part is placed in a vacuum degreasing sintering furnace to be sintered, the asphalt is volatilized and deposited in pores of the silicon carbide prefabricated part, impurities in the asphalt deposited in the pores are removed, then silicon steam is formed and fully reacts with carbon, and the compact silicon carbide part is obtained. According to the method for combining carbon source gasification with gas-phase siliconizing, the problem that carbon sources such as graphite cannot be added in photocuring forming can be effectively solved, and meanwhile the complex procedures of repeated carburization and degreasing of the prefabricated part can be solved. The carbon source content in the prefabricated part is effectively increased, and it can be guaranteed that the sintered product is more uniform in structure, excellent in surface quality and free of cracking, deformation and other phenomena.
本发明公开了一种用于光固化成型的碳化硅陶瓷及其反应结合方法，该反应结合方法，包括以下步骤：S1.准备碳化硅预制件；S2.将硅粉和沥青放置于容器中，将碳化硅预制件放置于硅粉和沥青上方，整体放置于真空脱脂烧结炉中烧结，使得沥青挥发沉积于碳化硅预制件孔隙中、沉积于孔隙中的沥青脱除杂质、再形成硅蒸气与碳充分反应，得到致密碳化硅制件。本发明的碳源气化结合气相渗硅的方法，能够有效解决光固化成型中无法加入石墨等碳源的短板，同时可以解决预制件反复渗碳和脱脂的复杂工序。本发明不仅有效增加预制件中碳源含量，还可以保证烧结后产品结构更加均匀，表面质量优良，无开裂，变形等现象。
Silicon carbide ceramic for photocuring molding and reaction combination method thereof
The invention discloses a silicon carbide ceramic for photocuring molding and a reaction bonding method thereof, and the reaction bonding method comprises the following steps: S1, preparing a silicon carbide prefabricated member; s2, silicon powder and asphalt are placed in a container, the silicon carbide prefabricated part is placed above the silicon powder and the asphalt, the whole silicon carbide prefabricated part is placed in a vacuum degreasing sintering furnace to be sintered, the asphalt is volatilized and deposited in pores of the silicon carbide prefabricated part, impurities in the asphalt deposited in the pores are removed, then silicon steam is formed and fully reacts with carbon, and the compact silicon carbide part is obtained. According to the method for combining carbon source gasification with gas-phase siliconizing, the problem that carbon sources such as graphite cannot be added in photocuring forming can be effectively solved, and meanwhile the complex procedures of repeated carburization and degreasing of the prefabricated part can be solved. The carbon source content in the prefabricated part is effectively increased, and it can be guaranteed that the sintered product is more uniform in structure, excellent in surface quality and free of cracking, deformation and other phenomena.
本发明公开了一种用于光固化成型的碳化硅陶瓷及其反应结合方法，该反应结合方法，包括以下步骤：S1.准备碳化硅预制件；S2.将硅粉和沥青放置于容器中，将碳化硅预制件放置于硅粉和沥青上方，整体放置于真空脱脂烧结炉中烧结，使得沥青挥发沉积于碳化硅预制件孔隙中、沉积于孔隙中的沥青脱除杂质、再形成硅蒸气与碳充分反应，得到致密碳化硅制件。本发明的碳源气化结合气相渗硅的方法，能够有效解决光固化成型中无法加入石墨等碳源的短板，同时可以解决预制件反复渗碳和脱脂的复杂工序。本发明不仅有效增加预制件中碳源含量，还可以保证烧结后产品结构更加均匀，表面质量优良，无开裂，变形等现象。
Silicon carbide ceramic for photocuring molding and reaction combination method thereof
用于光固化成型的碳化硅陶瓷及其反应结合方法
YU CHUIYOU (Autor:in) / SONG MANXIN (Autor:in) / TIAN FEIFAN (Autor:in) / OU FAN (Autor:in) / ZHANG TIANLEI (Autor:in) / LIU JIE (Autor:in)
09.01.2024
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
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