Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for manufacturing aluminum powder reinforced silicon-based ceramic core through photocuring additive
The invention discloses a method for manufacturing an aluminum powder reinforced silicon-based ceramic core by a photocuring additive, which comprises the following steps: S1, fully mixing photosensitive resin, a liquid dispersant, a photoinitiator and a photoinhibitor to obtain a liquid mixture, adding ceramic powder and aluminum powder into the liquid mixture, and fully mixing to obtain uniformly dispersed photocuring ceramic slurry; s2, printing and forming the photocuring ceramic slurry through a photocuring additive manufacturing technology to obtain a biscuit; and S3, performing thermogravimetric analysis on the biscuit, setting a pyrolysis temperature program according to a thermogravimetric curve of the biscuit, and performing degreasing sintering on the biscuit in a box-type furnace in an air atmosphere. The method has the advantages that under the air atmosphere, the aluminum powder is oxidized to generate the aluminum oxide reinforced silicon-based ceramic core, the mechanical strength of the photocuring silicon-based ceramic core is improved and the sintering shrinkage rate is reduced at the lower sintering temperature, the integrated manufacturing of the aluminum powder reinforced silicon-based ceramic core with low shrinkage, low defect and high mechanical property is realized, and the production cost is reduced. The method has the advantages of no need of molds and high surface precision.
本发明公开了一种光固化增材制造铝粉增强硅基陶瓷型芯的方法，包括S1、将光敏树脂、液体分散剂、光引发剂和光抑制剂充分混合，得到液体混合物，向液体混合物中加入陶瓷粉体和铝粉并充分混合，得到分散均匀的光固化陶瓷浆料；S2、通过光固化增材制造技术将光固化陶瓷浆料打印成型，得到素坯；S3、对素坯进行热重分析，根据素坯的热重曲线设置热解温度程序，将素坯在箱式炉中于空气气氛下进行脱脂烧结。优点是：在空气气氛下，铝粉氧化生成氧化铝增强硅基陶瓷型芯，在更低的烧结温度下，提高光固化硅基陶瓷型芯力学强度并降低烧结收缩率，实现铝粉增强的硅基陶瓷型芯的低收缩、低缺陷、高力学性能的一体化制造，具有无需模具、表面精度高的优点。
Method for manufacturing aluminum powder reinforced silicon-based ceramic core through photocuring additive
The invention discloses a method for manufacturing an aluminum powder reinforced silicon-based ceramic core by a photocuring additive, which comprises the following steps: S1, fully mixing photosensitive resin, a liquid dispersant, a photoinitiator and a photoinhibitor to obtain a liquid mixture, adding ceramic powder and aluminum powder into the liquid mixture, and fully mixing to obtain uniformly dispersed photocuring ceramic slurry; s2, printing and forming the photocuring ceramic slurry through a photocuring additive manufacturing technology to obtain a biscuit; and S3, performing thermogravimetric analysis on the biscuit, setting a pyrolysis temperature program according to a thermogravimetric curve of the biscuit, and performing degreasing sintering on the biscuit in a box-type furnace in an air atmosphere. The method has the advantages that under the air atmosphere, the aluminum powder is oxidized to generate the aluminum oxide reinforced silicon-based ceramic core, the mechanical strength of the photocuring silicon-based ceramic core is improved and the sintering shrinkage rate is reduced at the lower sintering temperature, the integrated manufacturing of the aluminum powder reinforced silicon-based ceramic core with low shrinkage, low defect and high mechanical property is realized, and the production cost is reduced. The method has the advantages of no need of molds and high surface precision.
本发明公开了一种光固化增材制造铝粉增强硅基陶瓷型芯的方法，包括S1、将光敏树脂、液体分散剂、光引发剂和光抑制剂充分混合，得到液体混合物，向液体混合物中加入陶瓷粉体和铝粉并充分混合，得到分散均匀的光固化陶瓷浆料；S2、通过光固化增材制造技术将光固化陶瓷浆料打印成型，得到素坯；S3、对素坯进行热重分析，根据素坯的热重曲线设置热解温度程序，将素坯在箱式炉中于空气气氛下进行脱脂烧结。优点是：在空气气氛下，铝粉氧化生成氧化铝增强硅基陶瓷型芯，在更低的烧结温度下，提高光固化硅基陶瓷型芯力学强度并降低烧结收缩率，实现铝粉增强的硅基陶瓷型芯的低收缩、低缺陷、高力学性能的一体化制造，具有无需模具、表面精度高的优点。
Method for manufacturing aluminum powder reinforced silicon-based ceramic core through photocuring additive
一种光固化增材制造铝粉增强硅基陶瓷型芯的方法
GU YUE (Autor:in) / DUAN WENYAN (Autor:in) / WANG GONG (Autor:in)
14.05.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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