Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Cobalt-nickel-molybdenum coated spherical zirconium carbide powder and preparation method thereof
The invention discloses a preparation method of cobalt-nickel-molybdenum coated spherical zirconium carbide powder. The preparation method comprises the following steps: carrying out plasma spheroidizing on zirconium carbide powder and cobalt-nickel-molybdenum mixed powder through a three-nozzle plasma spheroidizing device; in the cobalt-nickel-molybdenum mixed powder, the mixing mass ratio of cobalt to nickel to molybdenum is (3-5): (3-5): 2; the mass ratio of the zirconium carbide powder to the cobalt-nickel-molybdenum mixed powder is 2: (3-4); the three-nozzle plasma spheroidizing device comprises a spheroidizing generating chamber, an RF power supply system, a high-pressure airflow powder feeder, three plasma gas ejectors and a cooling water system. The zirconium carbide powder is coated with cobalt, nickel and molybdenum, so that the oxidation resistance and hardness of the zirconium carbide powder are improved; according to the three-nozzle plasma spheroidizing device, plasma gas and powder enter from different inlets, and the plasma gas is jetted to the spheroidizing generation chamber from three directions, so that the influence of a Karman vortex street is greatly reduced, the powder is concentrated to the spheroidizing generation chamber, and the spheroidizing effect is improved.
本发明公开了一种钴镍钼包覆球形碳化锆粉体的制备方法，将碳化锆粉体和钴镍钼混合粉末通过三喷头等离子球化装置进行等离子体球化；所述的钴镍钼混合粉末中，混合质量比为钴：镍：钼＝(3‑5):(3‑5):2；所述的碳化锆粉体和钴镍钼混合粉末的质量比为2:(3‑4)；所述的三喷头等离子球化装置包含：球化发生室、RF电源系统、高压气流送粉器、三个等离子气体喷射器、冷却水系统。本发明通过钴镍钼对碳化锆粉体的包覆，提高了碳化锆粉体的抗氧化性能和硬度；通过三喷头等离子球化装置，使等离子气体与粉料从不同入口进入，且等离子气体从3个方向喷射到球化发生室，大大减少了卡门涡街的影响，使粉末集中到球化发生室，提高球化效果。
Cobalt-nickel-molybdenum coated spherical zirconium carbide powder and preparation method thereof
The invention discloses a preparation method of cobalt-nickel-molybdenum coated spherical zirconium carbide powder. The preparation method comprises the following steps: carrying out plasma spheroidizing on zirconium carbide powder and cobalt-nickel-molybdenum mixed powder through a three-nozzle plasma spheroidizing device; in the cobalt-nickel-molybdenum mixed powder, the mixing mass ratio of cobalt to nickel to molybdenum is (3-5): (3-5): 2; the mass ratio of the zirconium carbide powder to the cobalt-nickel-molybdenum mixed powder is 2: (3-4); the three-nozzle plasma spheroidizing device comprises a spheroidizing generating chamber, an RF power supply system, a high-pressure airflow powder feeder, three plasma gas ejectors and a cooling water system. The zirconium carbide powder is coated with cobalt, nickel and molybdenum, so that the oxidation resistance and hardness of the zirconium carbide powder are improved; according to the three-nozzle plasma spheroidizing device, plasma gas and powder enter from different inlets, and the plasma gas is jetted to the spheroidizing generation chamber from three directions, so that the influence of a Karman vortex street is greatly reduced, the powder is concentrated to the spheroidizing generation chamber, and the spheroidizing effect is improved.
本发明公开了一种钴镍钼包覆球形碳化锆粉体的制备方法，将碳化锆粉体和钴镍钼混合粉末通过三喷头等离子球化装置进行等离子体球化；所述的钴镍钼混合粉末中，混合质量比为钴：镍：钼＝(3‑5):(3‑5):2；所述的碳化锆粉体和钴镍钼混合粉末的质量比为2:(3‑4)；所述的三喷头等离子球化装置包含：球化发生室、RF电源系统、高压气流送粉器、三个等离子气体喷射器、冷却水系统。本发明通过钴镍钼对碳化锆粉体的包覆，提高了碳化锆粉体的抗氧化性能和硬度；通过三喷头等离子球化装置，使等离子气体与粉料从不同入口进入，且等离子气体从3个方向喷射到球化发生室，大大减少了卡门涡街的影响，使粉末集中到球化发生室，提高球化效果。
Cobalt-nickel-molybdenum coated spherical zirconium carbide powder and preparation method thereof
一种钴镍钼包覆球形碳化锆粉体及其制备方法
CAO QIZHENG (Autor:in) / CHEN HAI (Autor:in) / DONG LIHUA (Autor:in)
25.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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