A kind of intelligent nano powder degausser and degaussing method

Abstract

The invention discloses an intelligent nanometer powder degausser, which comprises a control module, an amplitude amplification module, a power amplification module and a degaussing coil; the signal output end of the control module is connected to the signal input end of the amplitude amplification module, and the amplitude amplification module The signal output end of the module is connected to the signal input end of the power amplification module, and the power amplification module is electrically connected with the degaussing coil. Also disclosed is a degaussing method for the control module to generate a sine wave signal according to an input control instruction, and then input the sine wave signal into a degaussing coil to generate a degaussing magnetic field after amplifying the amplitude and power of the sine wave signal. Its advantage is that the present invention can accurately control the frequency of degaussing current, degaussing time, degaussing times, and the strength of degaussing magnetic field, etc., and can formulate different degaussing schemes according to different degaussing objects, especially suitable for nanoscale powder degaussing.

Description

technical field [0001] The invention relates to the field of degaussers, in particular to an intelligent nano powder degausser and a degaussing method. Background technique [0002] Most of the degaussers in the prior art use low frequency and high current to generate an alternating magnetic field that decreases gradually according to the law of the index, so as to achieve the purpose of degaussing. When the size of the object to be degaussed is relatively large, the degausser in the prior art can achieve a better degaussing effect. However, in actual use, it is often necessary to demagnetize nano-scale substances with extremely small sizes. For example, when doing transmission electron microscopy, it is necessary to oxidize nano-scale metals and their oxidized powders, otherwise the problem of powder agglomeration will easily occur. However, when the degausser in the prior art demagnetizes the powder with a diameter below 100nm, because the size of the degaussing magnetic...

AI Technical Summary

Problems solved by technology

However, when the degausser in the prior art demagnetizes the powder with a diameter below 100nm, because the size of the degaussing magnetic field is not easy to control, when the degaussing magnetic field is too large, the powder will have a thermal effect during degaussing and sinter into a lump

That is, the degausser in the prior art will destroy the self-morphology of the degaussed object when degaussing the nano powder

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