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Candle type silicon carbide porous ceramic membrane and preparation method thereof
The invention belongs to the technical field of silicon carbide ceramics, and particularly relates to a candle type silicon carbide porous ceramic membrane and a preparation method thereof.The preparation method comprises the following steps that first silicon carbide powder, second silicon carbide powder, a binder and a lubricant are mixed for 90-120 min, and then a mixture is obtained; the mixture is kneaded and then placed in a forming mold for extrusion forming treatment, and a candle type ceramic green body is obtained; and carrying out drying treatment and recrystallization treatment on the candle-type ceramic green body to obtain the candle-type silicon carbide porous ceramic membrane. No molten phase is generated in the recrystallization process, and no glassy structure or molten phase is generated basically; the ceramic particles of the non-oxide ceramic are not in an amorphous state and are basically 100% crystallized, so that a porous ceramic body with determined pores and grain sizes can be generated, the porous ceramic body has a uniform and open pore network, and the porosity can reach 35%-45%.
本发明属于碳化硅陶瓷技术领域，具体地说涉及一种烛式碳化硅多孔陶瓷膜及其制备方法，包括以下步骤：将第一碳化硅粉、第二碳化硅粉、粘结剂和润滑剂混合90‑120min后得到混合物；将所述混合物捏合后置于成型模具中进行挤出成型处理，得到烛式陶瓷坯体；对所述烛式陶瓷坯体进行干燥处理和再结晶处理，得到烛式碳化硅多孔陶瓷膜。再结晶过程中没有熔融相发生，基本上没有玻璃状结构或熔融相产生；非氧化物陶瓷的陶瓷颗粒不是处于无定形状态，基本上是100％结晶的，因此可以生成具有确定孔隙和晶粒尺寸的多孔陶瓷体，使其具有均匀的、开放的孔隙网络，孔隙率可达到35％‑45％。
Candle type silicon carbide porous ceramic membrane and preparation method thereof
The invention belongs to the technical field of silicon carbide ceramics, and particularly relates to a candle type silicon carbide porous ceramic membrane and a preparation method thereof.The preparation method comprises the following steps that first silicon carbide powder, second silicon carbide powder, a binder and a lubricant are mixed for 90-120 min, and then a mixture is obtained; the mixture is kneaded and then placed in a forming mold for extrusion forming treatment, and a candle type ceramic green body is obtained; and carrying out drying treatment and recrystallization treatment on the candle-type ceramic green body to obtain the candle-type silicon carbide porous ceramic membrane. No molten phase is generated in the recrystallization process, and no glassy structure or molten phase is generated basically; the ceramic particles of the non-oxide ceramic are not in an amorphous state and are basically 100% crystallized, so that a porous ceramic body with determined pores and grain sizes can be generated, the porous ceramic body has a uniform and open pore network, and the porosity can reach 35%-45%.
本发明属于碳化硅陶瓷技术领域，具体地说涉及一种烛式碳化硅多孔陶瓷膜及其制备方法，包括以下步骤：将第一碳化硅粉、第二碳化硅粉、粘结剂和润滑剂混合90‑120min后得到混合物；将所述混合物捏合后置于成型模具中进行挤出成型处理，得到烛式陶瓷坯体；对所述烛式陶瓷坯体进行干燥处理和再结晶处理，得到烛式碳化硅多孔陶瓷膜。再结晶过程中没有熔融相发生，基本上没有玻璃状结构或熔融相产生；非氧化物陶瓷的陶瓷颗粒不是处于无定形状态，基本上是100％结晶的，因此可以生成具有确定孔隙和晶粒尺寸的多孔陶瓷体，使其具有均匀的、开放的孔隙网络，孔隙率可达到35％‑45％。
Candle type silicon carbide porous ceramic membrane and preparation method thereof
一种烛式碳化硅多孔陶瓷膜及其制备方法
TANG YUDONG (author) / ZHAO SHIKAI (author) / ZHANG JIUMEI (author) / LI JIE (author) / LI XIAOYONG (author) / LIU HUALI (author) / BO CHUANJUAN (author) / ZHU ZEHUA (author) / LIU YUHUI (author)
2024-07-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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