METHOD FOR MANUFACTURING HIGH-TEMPERATURE CORE FOR RADIO-ELECTRONIC EQUIPMENT Russian patent published in 2022 - IPC H01F3/08 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering and can be used for the manufacture of cores intended for use in various electronic products, in particular in inductors with high requirements for thermal stability, for example, in harmonic filters of power amplifiers. The method for manufacturing a high-temperature core from phosphated carbonyl iron powder includes the processes of mixing with a binder material, pressing the resulting mixture at a specific pressure of at least 588⋅10⁶ Pa. Phosphated carbonyl iron powder is pre-incubated for 1 hour in a thermostat at 110°C, after which it is gradually cooled to a temperature of from 15°C to 35°C. Anaerobic heat-resistant sealant Anaterm-117 is used as a polymer binder in an amount of from 1% to 4% by weight of the powder, while the mixture is kept in a thermostat at a temperature of 200°C.

EFFECT: invention makes it possible to manufacture a core with increased thermal stability and the possibility of using it in radio-electronic equipment operating at temperatures up to 190°C.

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