Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Porous ceramic and preparation method thereof
The invention discloses porous ceramic and a preparation method thereof, and belongs to the field of porous ceramic materials. According to the method, the raw material source is controlled, the high-alumina fly ash mainly containing mullite phase and quartz phase is selected as the main raw material, an aluminum source and a silicon source are reasonably matched and added, and a small amount of fluoride-free whisker accelerant and sintering aid are added, so that the balance between the whisker generation amount and the porosity is regulated and controlled; finally, the porous ceramic with high whisker content and high porosity is obtained. In the prepared porous ceramic, the diameter of the mullite whisker is 0.5-0.8 [mu] m, the length-diameter ratio is 10-30, the growth direction of the mullite whisker is the c-axis [001] direction, the content of the mullite whisker in a product is 55-65 vol%, and the porosity of the ceramic is greater than 80%.
本发明公开了一种多孔陶瓷及其制备方法，属于多孔陶瓷材料领域。本发明的方法通过控制原料来源，选用成分组成主要为莫来石相和石英相的高铝粉煤灰作为主要原料，合理搭配外加铝源及硅源，并通过添加少量无氟晶须促进剂及烧结助剂，调控晶须生成量与孔隙率之间的平衡，最终获得晶须含量高且高孔隙率的多孔陶瓷。制得的多孔陶瓷中，莫来石晶须的直径为0.5‑0.8μm，长径比为10‑30，其生长方向为c轴[001]方向，生成物中莫来石晶须的含量为55～65vol％，陶瓷的孔隙率大于80％。
Porous ceramic and preparation method thereof
The invention discloses porous ceramic and a preparation method thereof, and belongs to the field of porous ceramic materials. According to the method, the raw material source is controlled, the high-alumina fly ash mainly containing mullite phase and quartz phase is selected as the main raw material, an aluminum source and a silicon source are reasonably matched and added, and a small amount of fluoride-free whisker accelerant and sintering aid are added, so that the balance between the whisker generation amount and the porosity is regulated and controlled; finally, the porous ceramic with high whisker content and high porosity is obtained. In the prepared porous ceramic, the diameter of the mullite whisker is 0.5-0.8 [mu] m, the length-diameter ratio is 10-30, the growth direction of the mullite whisker is the c-axis [001] direction, the content of the mullite whisker in a product is 55-65 vol%, and the porosity of the ceramic is greater than 80%.
本发明公开了一种多孔陶瓷及其制备方法，属于多孔陶瓷材料领域。本发明的方法通过控制原料来源，选用成分组成主要为莫来石相和石英相的高铝粉煤灰作为主要原料，合理搭配外加铝源及硅源，并通过添加少量无氟晶须促进剂及烧结助剂，调控晶须生成量与孔隙率之间的平衡，最终获得晶须含量高且高孔隙率的多孔陶瓷。制得的多孔陶瓷中，莫来石晶须的直径为0.5‑0.8μm，长径比为10‑30，其生长方向为c轴[001]方向，生成物中莫来石晶须的含量为55～65vol％，陶瓷的孔隙率大于80％。
Porous ceramic and preparation method thereof
一种多孔陶瓷及其制备方法
DING XIANG (Autor:in) / PENG BO (Autor:in) / ZHAO YUXIN (Autor:in) / DENG XIANGONG (Autor:in) / RAN SONGLIN (Autor:in)
29.09.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME