Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses an alumina/mullite composite porous ceramic and a preparation method thereof.The preparation method comprises the steps that firstly, a plastic forming method is adopted for preparing alumina porous ceramic, namely, a matrix, then pores are filled with an aluminum-silicon source through vacuum impregnation, calcination is conducted at the high temperature, and the alumina/mullite composite porous ceramic is obtained. And growing mullite whiskers on the surface of the aluminum oxide wafer through a gas-phase reaction of an aluminum-silicon source to finally form the aluminum oxide/mullite composite porous ceramic. According to the invention, an aluminum oxide material with excellent high-temperature stability, chemical stability and other characteristics is combined with a mullite material, a porous frame constructed by an aluminum oxide wafer is used as a main body, mullite whiskers are used as a secondary material to grow on the aluminum oxide wafer, and the aluminum oxide/mullite composite porous ceramic is formed. The composite material has good high temperature resistance, excellent chemical stability and a proper pore structure, and can be used as a high-temperature filtering material.
本发明公开了一种氧化铝/莫来石复合多孔陶瓷及其制备方法，该制备方法先采用塑性成型法制备氧化铝多孔陶瓷，即基体，然后通过真空浸渍将铝硅源填充到孔隙中，在高温下进行煅烧，通过铝硅源的气相反应在氧化铝晶片表面生长莫来石晶须，最终形成氧化铝/莫来石复合多孔陶瓷。本发明将具有优异高温稳定性和化学稳定性等特性的氧化铝材料与莫来石材料相结合，以氧化铝晶片构建的多孔框架作为主体，以莫来石晶须作为次级材料在氧化铝晶片上进行生长，形成氧化铝/莫来石复合多孔陶瓷，其具有良好的耐高温性能、优异的化学稳定性及适当的孔结构，能够被用作高温过滤材料。
The invention discloses an alumina/mullite composite porous ceramic and a preparation method thereof.The preparation method comprises the steps that firstly, a plastic forming method is adopted for preparing alumina porous ceramic, namely, a matrix, then pores are filled with an aluminum-silicon source through vacuum impregnation, calcination is conducted at the high temperature, and the alumina/mullite composite porous ceramic is obtained. And growing mullite whiskers on the surface of the aluminum oxide wafer through a gas-phase reaction of an aluminum-silicon source to finally form the aluminum oxide/mullite composite porous ceramic. According to the invention, an aluminum oxide material with excellent high-temperature stability, chemical stability and other characteristics is combined with a mullite material, a porous frame constructed by an aluminum oxide wafer is used as a main body, mullite whiskers are used as a secondary material to grow on the aluminum oxide wafer, and the aluminum oxide/mullite composite porous ceramic is formed. The composite material has good high temperature resistance, excellent chemical stability and a proper pore structure, and can be used as a high-temperature filtering material.
本发明公开了一种氧化铝/莫来石复合多孔陶瓷及其制备方法，该制备方法先采用塑性成型法制备氧化铝多孔陶瓷，即基体，然后通过真空浸渍将铝硅源填充到孔隙中，在高温下进行煅烧，通过铝硅源的气相反应在氧化铝晶片表面生长莫来石晶须，最终形成氧化铝/莫来石复合多孔陶瓷。本发明将具有优异高温稳定性和化学稳定性等特性的氧化铝材料与莫来石材料相结合，以氧化铝晶片构建的多孔框架作为主体，以莫来石晶须作为次级材料在氧化铝晶片上进行生长，形成氧化铝/莫来石复合多孔陶瓷，其具有良好的耐高温性能、优异的化学稳定性及适当的孔结构，能够被用作高温过滤材料。
Alumina/mullite composite porous ceramic and preparation method thereof
氧化铝/莫来石复合多孔陶瓷及其制备方法
07.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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