Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of graphene toughened aluminum oxide composite ceramic
The invention discloses a preparation method of graphene toughened aluminum oxide composite ceramic, which comprises the following steps: adding graphene oxide into distilled water or an organic solvent system to prepare a uniform graphene oxide dispersion liquid, then adding aluminum oxide ceramic powder and a small amount of sintering aid, stirring to form a uniform suspension dispersion liquid system, and drying to obtain the graphene toughened aluminum oxide composite ceramic. The obtained dispersion liquid is poured into a high-temperature reaction kettle, a self-supported three-dimensional graphene and ceramic powder composite material is formed through solvothermal reaction, and then the graphene toughened aluminum oxide composite ceramic is obtained through solvent removal, compaction and high-temperature sintering treatment. According to the preparation method, a three-dimensional cross-linked graphene network is introduced into an aluminum oxide substrate, so that the strength and the fracture toughness of the aluminum oxide ceramic substrate are improved, and the conductivity of the aluminum oxide substrate can be greatly improved through three-dimensional graphene.
本申请公开了一种石墨烯增韧氧化铝复合陶瓷的制备方法，包括：在蒸馏水或有机溶剂体系内加入氧化石墨烯，配制成均匀的氧化石墨烯分散液，再加入氧化铝陶瓷粉末和少量的烧结助剂，搅拌形成均匀的悬浮分散液体系，将所得的分散液倒入高温反应釜，通过溶剂热反应形成自支撑的三维石墨烯与陶瓷粉体复合材料，再经过移除溶剂，压实和高温烧结处理，得到石墨烯增韧氧化铝复合陶瓷。本发明通过在氧化铝基底中引入三维交联的石墨烯网络，来提高氧化铝陶瓷基底的强度和断裂韧性，三维石墨烯也能够使氧化铝基底的导电率大幅度提高。
Preparation method of graphene toughened aluminum oxide composite ceramic
The invention discloses a preparation method of graphene toughened aluminum oxide composite ceramic, which comprises the following steps: adding graphene oxide into distilled water or an organic solvent system to prepare a uniform graphene oxide dispersion liquid, then adding aluminum oxide ceramic powder and a small amount of sintering aid, stirring to form a uniform suspension dispersion liquid system, and drying to obtain the graphene toughened aluminum oxide composite ceramic. The obtained dispersion liquid is poured into a high-temperature reaction kettle, a self-supported three-dimensional graphene and ceramic powder composite material is formed through solvothermal reaction, and then the graphene toughened aluminum oxide composite ceramic is obtained through solvent removal, compaction and high-temperature sintering treatment. According to the preparation method, a three-dimensional cross-linked graphene network is introduced into an aluminum oxide substrate, so that the strength and the fracture toughness of the aluminum oxide ceramic substrate are improved, and the conductivity of the aluminum oxide substrate can be greatly improved through three-dimensional graphene.
本申请公开了一种石墨烯增韧氧化铝复合陶瓷的制备方法，包括：在蒸馏水或有机溶剂体系内加入氧化石墨烯，配制成均匀的氧化石墨烯分散液，再加入氧化铝陶瓷粉末和少量的烧结助剂，搅拌形成均匀的悬浮分散液体系，将所得的分散液倒入高温反应釜，通过溶剂热反应形成自支撑的三维石墨烯与陶瓷粉体复合材料，再经过移除溶剂，压实和高温烧结处理，得到石墨烯增韧氧化铝复合陶瓷。本发明通过在氧化铝基底中引入三维交联的石墨烯网络，来提高氧化铝陶瓷基底的强度和断裂韧性，三维石墨烯也能够使氧化铝基底的导电率大幅度提高。
Preparation method of graphene toughened aluminum oxide composite ceramic
一种石墨烯增韧氧化铝复合陶瓷的制备方法
GE ZHEN (Autor:in) / LAI HAORAN (Autor:in) / LI JIYANG (Autor:in) / CHEN XI (Autor:in)
13.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2021
Zirconium oxide toughened aluminum oxide composite ceramic material and preparation method thereof
| Europäisches Patentamt | 2021
Preparation method of toughened aluminum oxide ceramic body
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2024