A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Silicon carbide ceramic and preparation method thereof
The invention provides a manufacturing method of silicon carbide ceramic. The manufacturing method comprises the following steps: S1, mixing carbon-containing powder, a binder, a curing agent, a lubricant and an additive according to a certain proportion and sequence to form composite powder; s2, selective laser sintering 3D printing is conducted on the composite powder, and a ceramic biscuit is obtained; s3, the ceramic biscuit is subjected to high-temperature degreasing, and a degreased ceramic biscuit is obtained; s4, the degreased ceramic biscuit is subjected to densification treatment, and the silicon carbide ceramic is obtained. According to the method for preparing the silicon carbide composite ceramic through selective laser sintering SLS-3D printing, the powder stacking density is high, the biscuit strength is high, the sintering strength is high, the problem that a meter-scale large-size precise silicon carbide structural part of a complex special-shaped hollow structure is difficult to prepare can be solved, and the production efficiency can be improved so that the method can adapt to industrial large-scale production.
本发明提供一种碳化硅陶瓷的制造方法，包括：S1：将含碳粉体、粘结剂、固化剂、润滑剂和添加剂按照一定的配比和次序混合形成复合粉体；S2：对所述复合粉体进行选择性激光烧结3D打印，得到陶瓷素坯；S3：将所述陶瓷素坯进行高温脱脂，得到脱脂陶瓷素坯；以及S4：将所述脱脂陶瓷素坯进行增密处理，得到碳化硅陶瓷。本发明提供的一种选择性激光烧结SLS‑3D打印制备碳化硅复相陶瓷方法，粉体堆积密度高、素坯强度大、烧结强度大，既可解决米级大尺寸复杂异形中空结构的精密碳化硅结构件难以制备的难题，也可提高其生产效率以适应工业大规模生产。
Silicon carbide ceramic and preparation method thereof
The invention provides a manufacturing method of silicon carbide ceramic. The manufacturing method comprises the following steps: S1, mixing carbon-containing powder, a binder, a curing agent, a lubricant and an additive according to a certain proportion and sequence to form composite powder; s2, selective laser sintering 3D printing is conducted on the composite powder, and a ceramic biscuit is obtained; s3, the ceramic biscuit is subjected to high-temperature degreasing, and a degreased ceramic biscuit is obtained; s4, the degreased ceramic biscuit is subjected to densification treatment, and the silicon carbide ceramic is obtained. According to the method for preparing the silicon carbide composite ceramic through selective laser sintering SLS-3D printing, the powder stacking density is high, the biscuit strength is high, the sintering strength is high, the problem that a meter-scale large-size precise silicon carbide structural part of a complex special-shaped hollow structure is difficult to prepare can be solved, and the production efficiency can be improved so that the method can adapt to industrial large-scale production.
本发明提供一种碳化硅陶瓷的制造方法，包括：S1：将含碳粉体、粘结剂、固化剂、润滑剂和添加剂按照一定的配比和次序混合形成复合粉体；S2：对所述复合粉体进行选择性激光烧结3D打印，得到陶瓷素坯；S3：将所述陶瓷素坯进行高温脱脂，得到脱脂陶瓷素坯；以及S4：将所述脱脂陶瓷素坯进行增密处理，得到碳化硅陶瓷。本发明提供的一种选择性激光烧结SLS‑3D打印制备碳化硅复相陶瓷方法，粉体堆积密度高、素坯强度大、烧结强度大，既可解决米级大尺寸复杂异形中空结构的精密碳化硅结构件难以制备的难题，也可提高其生产效率以适应工业大规模生产。
Silicon carbide ceramic and preparation method thereof
碳化硅陶瓷及其制备方法
WANG DONG (author) / HUANG HAIXING (author) / SHI WEI (author) / LI WEIQIANG (author) / WANG QIANG (author)
2023-07-11
Patent
Electronic Resource
Chinese
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
| European Patent Office | 2023