Test circuit and method for diagnosing electrode surface components based on voltage and current waveforms

By using a test circuit based on voltage and current waveforms, the composition of the electrode surface can be quickly diagnosed, solving the problem of complex detection in existing technologies, realizing simple detection of electrode surface components, and providing a link between electrical and chemical parameters.

CN116124841BActive Publication Date: 2026-02-06NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Application Number
CN202211685573.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-27
Publication Date
2026-02-06
Estimated Expiration
2042-12-27

AI Technical Summary

Technical Problem

In the existing technology, the detection methods for electrode surface components are complex and not suitable for rapid detection. It is difficult to determine pulse current discharge or vacuum breakdown through voltage and current waveforms, which affects equipment performance.

Method used

A test circuit based on voltage and current waveforms is used. By placing pure metal electrodes and the electrode to be tested in a vacuum chamber, applying pulse voltage and measuring voltage and current waveforms, it is determined whether the electrode surface composition is pure metal and the content of pure metal.

Benefits of technology

It enables rapid and convenient diagnosis of electrode surface composition, and determines pulse current discharge and vacuum breakdown through voltage and current waveforms. It provides a bridge between electrical parameters and electrode surface chemical parameters, simplifying the detection process of electrode surface composition.

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Abstract

The application discloses a test loop and a method for diagnosing electrode surface components based on voltage and current waveforms, and belongs to the technical field of vacuum electron devices. The test loop comprises a pulse voltage generating device, a current measuring device, a voltage measuring device and a vacuum chamber. The method comprises the following steps: setting a to-be-detected electrode as a cathode, applying a pulse voltage, and sequentially measuring voltage and current waveforms; judging whether pulse current discharge or pulse current induced vacuum breakdown occurs according to the voltage and current waveforms, and diagnosing whether the electrode surface components are pure metal; if the electrode surface components are not pure metal, then judging the content of pure metal on the electrode surface according to the proportion of the occurrence times of pulse current discharge and pulse current induced vacuum breakdown.
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