A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROCÉDÉ D'OBTENTION D'UN FERRITE SPINELLE DE NICKEL ZINC COBALT SOUS FORME CÉRAMIQUE
A method of obtaining a nickel zinc cobalt spinet ferrite in ceramic form that includes the following: obtaining a precipitate (1) of iron, nickel, zinc, and cobalt hydroxides by co-precipitation, rinsing the precipitate (2), drying and grinding (3) the rinsed precipitate in order to obtain a powder; forming (4) into a compact by pressing the powder, and sintering (5) the compact. The sintering (5) includes a progressive temperature rise of 2° C. to 4° C. per minute, from an ambient temperature to reach a maximum temperature comprised between 950° C. and 1.010° C., maintaining at the maximum temperature for forty-five minutes to three hours, a progressive fall in temperature of 2° C. to 4° C. per minute to reach ambient temperature. The foregoing and, in particular, the sintering, enable a material to be obtained that is particularly well-adapted to the manufacture of an antenna configured for frequencies less than one gigahertz.
PROCÉDÉ D'OBTENTION D'UN FERRITE SPINELLE DE NICKEL ZINC COBALT SOUS FORME CÉRAMIQUE
A method of obtaining a nickel zinc cobalt spinet ferrite in ceramic form that includes the following: obtaining a precipitate (1) of iron, nickel, zinc, and cobalt hydroxides by co-precipitation, rinsing the precipitate (2), drying and grinding (3) the rinsed precipitate in order to obtain a powder; forming (4) into a compact by pressing the powder, and sintering (5) the compact. The sintering (5) includes a progressive temperature rise of 2° C. to 4° C. per minute, from an ambient temperature to reach a maximum temperature comprised between 950° C. and 1.010° C., maintaining at the maximum temperature for forty-five minutes to three hours, a progressive fall in temperature of 2° C. to 4° C. per minute to reach ambient temperature. The foregoing and, in particular, the sintering, enable a material to be obtained that is particularly well-adapted to the manufacture of an antenna configured for frequencies less than one gigahertz.
PROCÉDÉ D'OBTENTION D'UN FERRITE SPINELLE DE NICKEL ZINC COBALT SOUS FORME CÉRAMIQUE
METHOD FOR PRODUCING A NICKEL ZINC COBALT SPINEL FERRITE IN CERAMIC FORM
VERFAHREN ZUR HERSTELLUNG EINES NICKEL-ZINK-KOBALT-SPINELLFERRITS IN KERAMIKFORM
MATTEI JEAN-LUC (author) / SOURIOU DAVID (author)
2023-02-08
Patent
Electronic Resource
French
IPC:
C04B
Kalk
,
LIME
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