A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-performance aluminate source for terahertz traveling wave tube and preparation method thereof
The invention discloses a high-performance aluminate source for a terahertz traveling wave tube and a preparation method of the high-performance aluminate source for the terahertz traveling wave tube, and the high-performance aluminate source for the terahertz traveling wave tube comprises Ba3Al2O6, Ba3CaAl2O7, Ba5CaAl4O12 and Ba2CaWO6. According to the invention, barium carbonate, calcium carbonate and alumina powder with the optimal molar ratio of 4: 1: (0.4-0.8) are adopted to synthesize the multi-phase high-performance electron emission material. The emission current density of the barium tungsten aluminate cathode prepared by the invention is greater than or equal to 50A/cm < 2 > (1050 DEG C), the branch current density of the cathode is 12A/cm < 2 > (1050 DEG C), and the service life is greater than or equal to 2000h. And very good technical progress is achieved.
本发明公开了一种太赫兹行波管用高性能铝酸盐源及其制备方法，本发明所述的太赫兹行波管用高性能铝酸盐源，它包括Ba3Al2O6、Ba3CaAl2O7、Ba5CaAl4O12和Ba2CaWO6。本发明采用最优摩尔比4：1：0.4～0.8的碳酸钡、碳酸钙和氧化铝粉合成多种物相高性能电子发射材料。本发明制备的铝酸盐钡钨阴极发射电流密度≥50A/cm2(1050℃)，阴极支取电流密度12A/cm2(1050℃)，工作寿命≥2000h。取得了非常好的技术进步。
High-performance aluminate source for terahertz traveling wave tube and preparation method thereof
The invention discloses a high-performance aluminate source for a terahertz traveling wave tube and a preparation method of the high-performance aluminate source for the terahertz traveling wave tube, and the high-performance aluminate source for the terahertz traveling wave tube comprises Ba3Al2O6, Ba3CaAl2O7, Ba5CaAl4O12 and Ba2CaWO6. According to the invention, barium carbonate, calcium carbonate and alumina powder with the optimal molar ratio of 4: 1: (0.4-0.8) are adopted to synthesize the multi-phase high-performance electron emission material. The emission current density of the barium tungsten aluminate cathode prepared by the invention is greater than or equal to 50A/cm < 2 > (1050 DEG C), the branch current density of the cathode is 12A/cm < 2 > (1050 DEG C), and the service life is greater than or equal to 2000h. And very good technical progress is achieved.
本发明公开了一种太赫兹行波管用高性能铝酸盐源及其制备方法，本发明所述的太赫兹行波管用高性能铝酸盐源，它包括Ba3Al2O6、Ba3CaAl2O7、Ba5CaAl4O12和Ba2CaWO6。本发明采用最优摩尔比4：1：0.4～0.8的碳酸钡、碳酸钙和氧化铝粉合成多种物相高性能电子发射材料。本发明制备的铝酸盐钡钨阴极发射电流密度≥50A/cm2(1050℃)，阴极支取电流密度12A/cm2(1050℃)，工作寿命≥2000h。取得了非常好的技术进步。
High-performance aluminate source for terahertz traveling wave tube and preparation method thereof
太赫兹行波管用高性能铝酸盐源及其制备方法
FAN YASONG (author) / WANG CHUN (author) / LI RONG (author) / QIAN YAJUN (author) / MA JING (author)
2022-06-21
Patent
Electronic Resource
Chinese
Iron aluminate cement clinker, preparation method thereof and iron aluminate cement
| European Patent Office | 2024
Aluminate cement containing nano magnesium aluminate spinel and preparation method thereof
| European Patent Office | 2015