Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a preparation method of a gradient layered structure silicon nitride ceramic, the preparation method comprises the following steps: firstly, screening out a surface modifier capable of effectively reducing the refractive index difference of silicon nitride ceramic particles, and increasing the curing depth of the surface modifier; the applicant reveals a photocuring forming mechanism of the modified silicon nitride ceramic slurry by comparing rheological properties, dynamic stability, wettability and photocuring properties of the silicon nitride ceramic slurry before and after modification. By utilizing the mechanism, the rheological property, the dynamic stability, the wettability and the photocuring property of the silicon nitride ceramic slurry are improved, and the silicon nitride ceramic with high density, hardness and fracture toughness can be prepared.
本发明公开了一种梯度层状结构氮化硅陶瓷的制备方法，本发明首先筛选出具有有效地降低氮化硅陶瓷颗粒的折射率差的表面改性剂，增加其固化深度。申请人对比改性前后的氮化硅陶瓷浆料的流变性能、动力学稳定性、润湿性能和光固化性能，揭示了改性氮化硅陶瓷浆料的光固化成形机制。利用该机制改善了氮化硅陶瓷浆料的流变性能、动力学稳定性、润湿性能和光固化性能，能够制备得到具有高致密度、硬度和断裂韧性的氮化硅陶瓷。
The invention discloses a preparation method of a gradient layered structure silicon nitride ceramic, the preparation method comprises the following steps: firstly, screening out a surface modifier capable of effectively reducing the refractive index difference of silicon nitride ceramic particles, and increasing the curing depth of the surface modifier; the applicant reveals a photocuring forming mechanism of the modified silicon nitride ceramic slurry by comparing rheological properties, dynamic stability, wettability and photocuring properties of the silicon nitride ceramic slurry before and after modification. By utilizing the mechanism, the rheological property, the dynamic stability, the wettability and the photocuring property of the silicon nitride ceramic slurry are improved, and the silicon nitride ceramic with high density, hardness and fracture toughness can be prepared.
本发明公开了一种梯度层状结构氮化硅陶瓷的制备方法，本发明首先筛选出具有有效地降低氮化硅陶瓷颗粒的折射率差的表面改性剂，增加其固化深度。申请人对比改性前后的氮化硅陶瓷浆料的流变性能、动力学稳定性、润湿性能和光固化性能，揭示了改性氮化硅陶瓷浆料的光固化成形机制。利用该机制改善了氮化硅陶瓷浆料的流变性能、动力学稳定性、润湿性能和光固化性能，能够制备得到具有高致密度、硬度和断裂韧性的氮化硅陶瓷。
Preparation method of gradient layered structure silicon nitride ceramic
一种梯度层状结构氮化硅陶瓷的制备方法
09.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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