Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of homogenized large-size silicon nitride ceramic plate
The invention discloses a preparation method of a homogenized large-size silicon nitride-based ceramic plate, which belongs to the technical field of functional ceramic preparation, and is characterized in that silica sol, a water-soluble macromolecular organic matter, a sintering aid and acid-washed silicon nitride ceramic powder are uniformly mixed, the acid-washed silicon nitride ceramic powder comprises 0.5-0.8 [mu] m particles and 1-2 [mu] m particles, and ball milling is carried out to obtain slurry; and vacuum degassing is performed on the slurry and then injected into a mold, the slurry is enabled to suspend in liquid nitrogen for full curing molding, then demolding is conducted to obtain a green body, and the green body is dried and sintered to obtain the homogenized silicon nitride-based ceramic plate material.
本发明公开一种均质化大尺寸氮化硅基陶瓷平板的制备方法，属于功能陶瓷制备技术领域，通过将硅溶胶、水溶性大分子有机物、烧结助剂与酸洗氮化硅陶瓷粉体混合均匀，其中酸洗氮化硅陶瓷粉体包含0.5～0.8μm的颗粒和1～2μm的颗粒，进行球磨后获得浆料；将所述浆料真空脱气注入模具后，使其悬浮在液氮中进行充分固化成型，然后脱模得到坯体，坯体经干燥、烧结，得到均质化氮化硅基陶瓷平板材料。
Preparation method of homogenized large-size silicon nitride ceramic plate
The invention discloses a preparation method of a homogenized large-size silicon nitride-based ceramic plate, which belongs to the technical field of functional ceramic preparation, and is characterized in that silica sol, a water-soluble macromolecular organic matter, a sintering aid and acid-washed silicon nitride ceramic powder are uniformly mixed, the acid-washed silicon nitride ceramic powder comprises 0.5-0.8 [mu] m particles and 1-2 [mu] m particles, and ball milling is carried out to obtain slurry; and vacuum degassing is performed on the slurry and then injected into a mold, the slurry is enabled to suspend in liquid nitrogen for full curing molding, then demolding is conducted to obtain a green body, and the green body is dried and sintered to obtain the homogenized silicon nitride-based ceramic plate material.
本发明公开一种均质化大尺寸氮化硅基陶瓷平板的制备方法，属于功能陶瓷制备技术领域，通过将硅溶胶、水溶性大分子有机物、烧结助剂与酸洗氮化硅陶瓷粉体混合均匀，其中酸洗氮化硅陶瓷粉体包含0.5～0.8μm的颗粒和1～2μm的颗粒，进行球磨后获得浆料；将所述浆料真空脱气注入模具后，使其悬浮在液氮中进行充分固化成型，然后脱模得到坯体，坯体经干燥、烧结，得到均质化氮化硅基陶瓷平板材料。
Preparation method of homogenized large-size silicon nitride ceramic plate
一种均质化大尺寸氮化硅陶瓷平板的制备方法
17.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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