A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of high-strength mullite combined silicon carbide porous ceramic material
The invention provides a preparation method of a high-strength mullite combined silicon carbide porous ceramic material, which comprises the following steps: step 1, adding a matrix raw material into a ball milling tank, then adding a dispersant aqueous solution and a ball milling medium, carrying out primary ball milling, then adding a binder solution, and continuing secondary ball milling to obtain slurry; step 2, pouring the slurry obtained in the step 1 into a container, and putting the container into a freeze dryer for drying and dewatering to obtain a solid; step 3, granulating the powder obtained in the step 2, and then conducting sieving; step 4, performing dry pressing molding on a screen underflow obtained in the step 3 by using a mold to obtain a green body; step 5, subjecting the green body obtained in the step 4 to vacuum drying; and step 6, sintering the green body subjected to vacuum drying in the step 5 under normal pressure in an air atmosphere. The obtained high-strength mullite combined silicon carbide porous ceramic material does not contain cristobalite phase and is high in bending strength.
本公开提供了一种高强度莫来石结合碳化硅多孔陶瓷材料的制备方法，包括步骤：步骤一，将基体原料加入球磨罐中，再加入分散剂水溶液、球磨介质，进行一次磨球，再加入粘结剂溶液，继续二次球磨，得到浆料；步骤二，将步骤一所得到的浆料倒入容器中，放入冷冻干燥器机进行干燥脱水，得到固体物；步骤三，将步骤二得到的粉体造粒，然后过筛；步骤四，将步骤三得到的筛下物利用模具干压成型，得到生坯；步骤五，将步骤四得到的生坯进行真空干燥；步骤六，将步骤五真空干燥后的生坯在空气气氛中进行常压烧结。所获得的高强度莫来石结合碳化硅多孔陶瓷材料不含方石英相、抗弯曲强度高。
Preparation method of high-strength mullite combined silicon carbide porous ceramic material
The invention provides a preparation method of a high-strength mullite combined silicon carbide porous ceramic material, which comprises the following steps: step 1, adding a matrix raw material into a ball milling tank, then adding a dispersant aqueous solution and a ball milling medium, carrying out primary ball milling, then adding a binder solution, and continuing secondary ball milling to obtain slurry; step 2, pouring the slurry obtained in the step 1 into a container, and putting the container into a freeze dryer for drying and dewatering to obtain a solid; step 3, granulating the powder obtained in the step 2, and then conducting sieving; step 4, performing dry pressing molding on a screen underflow obtained in the step 3 by using a mold to obtain a green body; step 5, subjecting the green body obtained in the step 4 to vacuum drying; and step 6, sintering the green body subjected to vacuum drying in the step 5 under normal pressure in an air atmosphere. The obtained high-strength mullite combined silicon carbide porous ceramic material does not contain cristobalite phase and is high in bending strength.
本公开提供了一种高强度莫来石结合碳化硅多孔陶瓷材料的制备方法，包括步骤：步骤一，将基体原料加入球磨罐中，再加入分散剂水溶液、球磨介质，进行一次磨球，再加入粘结剂溶液，继续二次球磨，得到浆料；步骤二，将步骤一所得到的浆料倒入容器中，放入冷冻干燥器机进行干燥脱水，得到固体物；步骤三，将步骤二得到的粉体造粒，然后过筛；步骤四，将步骤三得到的筛下物利用模具干压成型，得到生坯；步骤五，将步骤四得到的生坯进行真空干燥；步骤六，将步骤五真空干燥后的生坯在空气气氛中进行常压烧结。所获得的高强度莫来石结合碳化硅多孔陶瓷材料不含方石英相、抗弯曲强度高。
Preparation method of high-strength mullite combined silicon carbide porous ceramic material
高强度莫来石结合碳化硅多孔陶瓷材料的制备方法
ZHANG JINGDE (author) / LI ZIHE (author) / CHANG ZIXUAN (author) / HAN GUIFANG (author)
2021-08-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2015
Silicon carbide and mullite combined multiphase refractory material and preparation method thereof
| European Patent Office | 2021
High-strength silicon carbide ceramic material and preparation method therefor
| European Patent Office | 2015
| European Patent Office | 2023