Ceramic tube and preparation method thereof

Abstract

The invention provides a ceramic tube and a preparation method thereof, and relates to the technical field of parts of plasma generating devices, the ceramic tube is of a hollow structure, a pluralityof cooling holes are formed in the ceramic tube in the circumferential direction, the head end of the ceramic tube communicates with the external environment, the tail end of the ceramic tube is sealed, and the cooling holes communicate with the hollow part of the ceramic tube. First metal conductors and second metal conductors are buried in the circumferential direction of the ceramic tube, thesecond metal conductors are electrically connected with the first metal conductors through the same metal wire, the distance between the tail ends of the first metal conductors and the tail ends of the second metal conductors and the tail end of the ceramic tube is preset, and a wiring groove is formed in the ceramic tube. The first metal conductors are electrically connected with a wire at the wiring groove, the ceramic tube is coated with a semiconductor glaze layer, the second metal conductors are electrically connected with the semiconductor glaze layer through conductive mud, and the semiconductor glaze layer is coated with an insulating glaze layer. The problems that in the prior art, the effective discharge area of an electrode of a plasma generation device is small, and the plasmageneration efficiency is reduced due to heating in the discharge process are solved.

Description

technical field [0001] The invention belongs to the technical field of components of plasma generators, and specifically provides a ceramic tube and a preparation method thereof. Background technique [0002] In recent years, low-temperature plasma has been widely demanded in the fields of waste gas and wastewater treatment, biomedicine, surface modification of polymer materials, and ignition and combustion. Gas discharge is one of the effective ways to generate plasma. The common forms of gas discharge mainly include glow discharge, corona discharge and dielectric barrier discharge. Among them, the dielectric barrier discharge is a gas discharge form in which an insulating medium is inserted into the discharge space. The discharge channel passing through the two electrodes is blocked by the insulating medium in the air gap, thereby generating a large-area, high-energy-density low-temperature plasma in the channel. [0003] The electrodes of the existing dielectric barrier ...

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Problems solved by technology

[0005] The present invention proposes a ceramic tube and its preparation method, which solves the problems that the effective discharge area of ​​the electrode in the plasma generating device in the prior art is small and the heat generated during the discharge process reduces the plasma generation efficiency

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