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High-strength low-temperature sintered porous ceramic based on layered silicon carbide and preparation method of high-strength low-temperature sintered porous ceramic
The invention discloses layered silicon carbide-based high-strength low-temperature sintered porous ceramic and a preparation method thereof, belongs to the technical field of porous ceramic materials, and solves the technical problems of high sintering temperature, high requirement on sintering atmosphere, serious oxidation after low-temperature sintering and low compression strength of the porous ceramic material. The solution is as follows: the porous ceramic comprises the following components in parts by mass: 100 parts of silicon carbide powder, 5-15 parts of a sintering aid, 0.2-1 part of a dispersing agent and 0.75-5 parts of a binder, based on a freeze-drying method, a liquid-phase sintering assisted oxidation sintering method is adopted, gelatin is added as a binder, yttrium oxide and aluminum oxide are added as sintering aids, high strength and low cost are guaranteed, meanwhile, the sintering temperature is greatly reduced, and the problem of serious low-temperature sintering oxidation is solved. The process is simple and reliable, the sintering temperature is low, the production cost is low, and the prepared layered silicon carbide-based high-strength low-temperature sintered porous ceramic material has excellent compression resistance.
一种基于层状碳化硅的高强度低温烧结多孔陶瓷及其制备方法，属于多孔陶瓷材料技术领域，解决多孔陶瓷材料烧结温度高、烧结气氛要求高以及低温烧结后氧化严重、压缩强度低的技术问题，解决方案为：所述多孔陶瓷的组成及其质量配比为：碳化硅粉体100份、烧结助剂5~15份、分散剂0.2~1份和粘结剂0.75~5份；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，通过加入明胶作为粘结剂，氧化钇和氧化铝作为烧结助剂，在保证高强度和低成本的同时大幅降低了烧结温度，克服了低温烧结氧化严重的问题。本发明工艺简单可靠、烧结温度低、生产成本低廉，制得的基于层状碳化硅的高强度低温烧结多孔陶瓷材料具有优异的抗压性能。
High-strength low-temperature sintered porous ceramic based on layered silicon carbide and preparation method of high-strength low-temperature sintered porous ceramic
The invention discloses layered silicon carbide-based high-strength low-temperature sintered porous ceramic and a preparation method thereof, belongs to the technical field of porous ceramic materials, and solves the technical problems of high sintering temperature, high requirement on sintering atmosphere, serious oxidation after low-temperature sintering and low compression strength of the porous ceramic material. The solution is as follows: the porous ceramic comprises the following components in parts by mass: 100 parts of silicon carbide powder, 5-15 parts of a sintering aid, 0.2-1 part of a dispersing agent and 0.75-5 parts of a binder, based on a freeze-drying method, a liquid-phase sintering assisted oxidation sintering method is adopted, gelatin is added as a binder, yttrium oxide and aluminum oxide are added as sintering aids, high strength and low cost are guaranteed, meanwhile, the sintering temperature is greatly reduced, and the problem of serious low-temperature sintering oxidation is solved. The process is simple and reliable, the sintering temperature is low, the production cost is low, and the prepared layered silicon carbide-based high-strength low-temperature sintered porous ceramic material has excellent compression resistance.
一种基于层状碳化硅的高强度低温烧结多孔陶瓷及其制备方法，属于多孔陶瓷材料技术领域，解决多孔陶瓷材料烧结温度高、烧结气氛要求高以及低温烧结后氧化严重、压缩强度低的技术问题，解决方案为：所述多孔陶瓷的组成及其质量配比为：碳化硅粉体100份、烧结助剂5~15份、分散剂0.2~1份和粘结剂0.75~5份；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，通过加入明胶作为粘结剂，氧化钇和氧化铝作为烧结助剂，在保证高强度和低成本的同时大幅降低了烧结温度，克服了低温烧结氧化严重的问题。本发明工艺简单可靠、烧结温度低、生产成本低廉，制得的基于层状碳化硅的高强度低温烧结多孔陶瓷材料具有优异的抗压性能。
High-strength low-temperature sintered porous ceramic based on layered silicon carbide and preparation method of high-strength low-temperature sintered porous ceramic
基于层状碳化硅的高强度低温烧结多孔陶瓷及其制备方法
DENG KUNKUN (author) / DU ZEQI (author) / XU CHAO (author) / BAI ZEXIN (author) / WANG CUIJU (author) / NIE KAIBO (author) / SHI QUANXIN (author)
2023-01-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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