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Silicon nitride ceramic slurry based on powder modification, silicon nitride ceramic and preparation method
The invention discloses silicon nitride ceramic slurry based on powder modification, silicon nitride ceramic and a preparation method, and relates to the technical field of silicon nitride ceramic. According to the invention, silicon nitride is oxidized, and a silane coupling agent is added for modification, so that the silicon nitride ceramic slurry with strong photocuring ability, high solid content, low viscosity and reliable stability is prepared, and the curing depth and stability of the Si3N4 ceramic slurry can be effectively improved; and the rheological property and the wettability of the Si3N4 ceramic slurry are improved. The Si3N4 ceramic slurry disclosed by the invention is suitable for preparing a compact Si3N4 ceramic part through DLP printing. Experiments prove that the bending strength of the Si3N4 ceramic part is 577.06+/-78.81 MPa, the hardness of the Si3N4 ceramic part is 12.65+/-0.71 GPa, the fracture toughness of the Si3N4 ceramic part is 6.17+/-0.39 MPa.m<1/2>, and the thermal conductivity of the Si3N4 ceramic part is 41.38 W/(m.K). Therefore, the performance of the sample printed by adopting the DLP is close to that of a sample manufactured by cold isostatic pressing.
本发明公开了一种基于粉体改性的氮化硅陶瓷浆料、氮化硅陶瓷及制备方法，涉及氮化硅陶瓷技术领域。本发明通过对氮化硅进行氧化，并加入硅烷偶联剂进行改性，制备得到了光固化能力强、固含量高、粘度低、稳定性可靠的氮化硅陶瓷浆料，可以有效提高Si3N4陶瓷浆料的固化深度和稳定性；改善Si3N4陶瓷浆料的流变性能和润湿性。本发明的Si3N4陶瓷浆料适用于通过DLP打印制备出致密的Si3N4陶瓷零件。实验证明，该Si3N4陶瓷零件的抗弯强度、硬度、断裂韧性和导热率分别为：577.06±78.81MPa,12.65±0.71GPa,6.17±0.39MPa·m1/2和41.38W/(m·K)。可见，本发明采用DLP打印样品在性能上接近于冷等静压制作的样品。
Silicon nitride ceramic slurry based on powder modification, silicon nitride ceramic and preparation method
The invention discloses silicon nitride ceramic slurry based on powder modification, silicon nitride ceramic and a preparation method, and relates to the technical field of silicon nitride ceramic. According to the invention, silicon nitride is oxidized, and a silane coupling agent is added for modification, so that the silicon nitride ceramic slurry with strong photocuring ability, high solid content, low viscosity and reliable stability is prepared, and the curing depth and stability of the Si3N4 ceramic slurry can be effectively improved; and the rheological property and the wettability of the Si3N4 ceramic slurry are improved. The Si3N4 ceramic slurry disclosed by the invention is suitable for preparing a compact Si3N4 ceramic part through DLP printing. Experiments prove that the bending strength of the Si3N4 ceramic part is 577.06+/-78.81 MPa, the hardness of the Si3N4 ceramic part is 12.65+/-0.71 GPa, the fracture toughness of the Si3N4 ceramic part is 6.17+/-0.39 MPa.m<1/2>, and the thermal conductivity of the Si3N4 ceramic part is 41.38 W/(m.K). Therefore, the performance of the sample printed by adopting the DLP is close to that of a sample manufactured by cold isostatic pressing.
本发明公开了一种基于粉体改性的氮化硅陶瓷浆料、氮化硅陶瓷及制备方法，涉及氮化硅陶瓷技术领域。本发明通过对氮化硅进行氧化，并加入硅烷偶联剂进行改性，制备得到了光固化能力强、固含量高、粘度低、稳定性可靠的氮化硅陶瓷浆料，可以有效提高Si3N4陶瓷浆料的固化深度和稳定性；改善Si3N4陶瓷浆料的流变性能和润湿性。本发明的Si3N4陶瓷浆料适用于通过DLP打印制备出致密的Si3N4陶瓷零件。实验证明，该Si3N4陶瓷零件的抗弯强度、硬度、断裂韧性和导热率分别为：577.06±78.81MPa,12.65±0.71GPa,6.17±0.39MPa·m1/2和41.38W/(m·K)。可见，本发明采用DLP打印样品在性能上接近于冷等静压制作的样品。
Silicon nitride ceramic slurry based on powder modification, silicon nitride ceramic and preparation method
一种基于粉体改性的氮化硅陶瓷浆料、氮化硅陶瓷及制备方法
WU SHANGHUA (author) / HUANG SHENGWU (author) / SUN ZHENFEI (author) / YANG PING (author)
2021-10-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
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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