A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of tantalum carbide-silicon carbide multiphase ceramic powder
The invention discloses a preparation method of tantalum carbide-silicon carbide multiphase ceramic powder, which comprises the following specific steps: 1) precursor preparation: uniformly stirring a tantalum oxide precursor solution and a silicon carbide precursor LPVCS at room temperature, removing a solvent through rotary evaporation, and performing cross-linking curing under a vacuum condition to obtain TaC-SiC precursor powder; and 2) precursor pyrolysis: carrying out pyrolysis treatment on the TaC-SiC precursor powder in an argon atmosphere to obtain the TaC-SiC composite ceramic powder. The low-polymerization-degree liquid SiC precursor LPVCS adopted by the invention has the advantages of high crosslinking degree, low viscosity, high ceramic yield and the like, and due to the high carbon content of the LPVCS, a carbon source does not need to be additionally added into the precursor. The TaC-SiC composite ceramic powder obtained through pyrolysis is fine in grain, uniform in element distribution and excellent in comprehensive performance.
本发明公开了一种碳化钽‑碳化硅复相陶瓷粉体的制备方法，其具体步骤如下：1)前驱体制备：将氧化钽前驱体溶液与碳化硅前驱体LPVCS在室温下搅拌均匀，经过旋转蒸发除去溶剂后，在真空条件下交联固化得到TaC‑SiC前驱体粉末；2)前驱体热解：将TaC‑SiC前驱体粉末在氩气气氛中进行热解处理，得到TaC‑SiC复相陶瓷粉体。本发明采用的低聚合度液态SiC前驱体LPVCS具有交联度高、粘度低和陶瓷产率高等优点，且由于LPVCS较高的碳含量，前驱体中不需要额外加入碳源。经过热解得到的TaC‑SiC复相陶瓷粉体晶粒细小、元素分布均匀，具有优异的综合性能。
Preparation method of tantalum carbide-silicon carbide multiphase ceramic powder
The invention discloses a preparation method of tantalum carbide-silicon carbide multiphase ceramic powder, which comprises the following specific steps: 1) precursor preparation: uniformly stirring a tantalum oxide precursor solution and a silicon carbide precursor LPVCS at room temperature, removing a solvent through rotary evaporation, and performing cross-linking curing under a vacuum condition to obtain TaC-SiC precursor powder; and 2) precursor pyrolysis: carrying out pyrolysis treatment on the TaC-SiC precursor powder in an argon atmosphere to obtain the TaC-SiC composite ceramic powder. The low-polymerization-degree liquid SiC precursor LPVCS adopted by the invention has the advantages of high crosslinking degree, low viscosity, high ceramic yield and the like, and due to the high carbon content of the LPVCS, a carbon source does not need to be additionally added into the precursor. The TaC-SiC composite ceramic powder obtained through pyrolysis is fine in grain, uniform in element distribution and excellent in comprehensive performance.
本发明公开了一种碳化钽‑碳化硅复相陶瓷粉体的制备方法，其具体步骤如下：1)前驱体制备：将氧化钽前驱体溶液与碳化硅前驱体LPVCS在室温下搅拌均匀，经过旋转蒸发除去溶剂后，在真空条件下交联固化得到TaC‑SiC前驱体粉末；2)前驱体热解：将TaC‑SiC前驱体粉末在氩气气氛中进行热解处理，得到TaC‑SiC复相陶瓷粉体。本发明采用的低聚合度液态SiC前驱体LPVCS具有交联度高、粘度低和陶瓷产率高等优点，且由于LPVCS较高的碳含量，前驱体中不需要额外加入碳源。经过热解得到的TaC‑SiC复相陶瓷粉体晶粒细小、元素分布均匀，具有优异的综合性能。
Preparation method of tantalum carbide-silicon carbide multiphase ceramic powder
一种碳化钽-碳化硅复相陶瓷粉体的制备方法
WANG HONGLEI (author) / SUN CHUHAN (author) / ZHOU XINGUI (author) / YU JINSHAN (author)
2024-02-27
Patent
Electronic Resource
Chinese
Preparation method of multiphase silicon carbide ceramic and multiphase silicon carbide ceramic
| European Patent Office | 2024
| European Patent Office | 2024
Spark plasma sintering method of silicon carbide/tantalum carbide toughened ceramic
| European Patent Office | 2022
Preparation method of multiphase composite reinforced silicon carbide ceramic
| European Patent Office | 2021