METHOD FOR ION-PLASMA FORMATION OF PROTECTIVE COATING OF REED CONTROLS Russian patent published in 2023 - IPC H01H11/04 C23C14/24 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering and can be used in the electronics industry in the manufacture of sealed magnetically controlled contacts (reed switches). The effect is achieved by ion-plasma formation of a protective coating of reed switches, along which a glow discharge is excited in the gap between the contact parts by voltage pulses with a duration of 10-30 μs at a repetition rate of 20-30 kHz with a discharge current fill factor of 20-90%, after which two In successive stages, the surface of the contact parts is cleaned with a discharge current with a pulse density of (7-9)⋅10² mA/cm² for 30-45 minutes and the surface is nitrided with a discharge current with a pulse density of (4-6)⋅10² mA/cm² for 90 -120 minutes, while on the initial surface of the contact parts of the reed switches a microrelief is formed with an arithmetic mean deviation of the profile equal to 0.16-0.20 μm.

EFFECT: increasing the surface strength of contact parts.

1 cl, 2 dwg, 1 tbl