Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing layered alumina porous ceramic through low-temperature sintering
The invention relates to a method for preparing layered aluminum oxide porous ceramic through low-temperature sintering, belongs to the technical field of porous ceramic materials, and solves the technical problems of high sintering temperature and low compression strength of the layered aluminum oxide porous ceramic materials. And boron oxide is added as a sintering aid, so that the sintering temperature is greatly reduced while high strength and low cost are ensured. According to the low-temperature sintering process disclosed by the invention, the boric acid (boric acid after absorbing water) can be dehydrated and reduced into boric acid by sintering at 200-400 DEG C for a certain time, and the boric acid is molten to wrap the aluminum oxide to generate aluminum borate in the subsequent heating process, so that the aluminum oxide particles are bonded, and the strength is improved. The process is simple and reliable, and the production cost is low.
一种低温烧结制备层状氧化铝多孔陶瓷的方法，属于多孔陶瓷材料技术领域，解决层状氧化铝多孔陶瓷材料烧结温度高、压缩强度低的技术问题，解决方案为：本发明基于冷冻干燥法，采用液相烧结辅以氧化烧结的方法，通过加入氧化硼作为烧结助剂，在保证高强度和低成本的同时大幅降低了烧结温度。根据本发明的低温烧结工艺，在200~400℃烧结一定时间，可将硼酸（氧化硼吸水后变为硼酸）脱水还原为氧化硼，之后的加热过程中氧化硼熔化包裹氧化铝生成硼酸铝，进而粘结氧化铝颗粒，提高了强度。本发明工艺简单可靠、生产成本低廉。
Method for preparing layered alumina porous ceramic through low-temperature sintering
The invention relates to a method for preparing layered aluminum oxide porous ceramic through low-temperature sintering, belongs to the technical field of porous ceramic materials, and solves the technical problems of high sintering temperature and low compression strength of the layered aluminum oxide porous ceramic materials. And boron oxide is added as a sintering aid, so that the sintering temperature is greatly reduced while high strength and low cost are ensured. According to the low-temperature sintering process disclosed by the invention, the boric acid (boric acid after absorbing water) can be dehydrated and reduced into boric acid by sintering at 200-400 DEG C for a certain time, and the boric acid is molten to wrap the aluminum oxide to generate aluminum borate in the subsequent heating process, so that the aluminum oxide particles are bonded, and the strength is improved. The process is simple and reliable, and the production cost is low.
一种低温烧结制备层状氧化铝多孔陶瓷的方法，属于多孔陶瓷材料技术领域，解决层状氧化铝多孔陶瓷材料烧结温度高、压缩强度低的技术问题，解决方案为：本发明基于冷冻干燥法，采用液相烧结辅以氧化烧结的方法，通过加入氧化硼作为烧结助剂，在保证高强度和低成本的同时大幅降低了烧结温度。根据本发明的低温烧结工艺，在200~400℃烧结一定时间，可将硼酸（氧化硼吸水后变为硼酸）脱水还原为氧化硼，之后的加热过程中氧化硼熔化包裹氧化铝生成硼酸铝，进而粘结氧化铝颗粒，提高了强度。本发明工艺简单可靠、生产成本低廉。
Method for preparing layered alumina porous ceramic through low-temperature sintering
一种低温烧结制备层状氧化铝多孔陶瓷的方法
DENG KUNKUN (Autor:in) / ZHENG ZILONG (Autor:in) / NIE KAIBO (Autor:in) / XU CHAO (Autor:in) / WANG XIAOJUN (Autor:in) / SHI QUANXIN (Autor:in) / WANG GUOCHAO (Autor:in)
27.10.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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