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What are the advantages and disadvantages of the corona discharge surface treatment system?
Author:Original Click :2151 Date: 2021-03-19

What are the advantages and disadvantages of the corona discharge surface treatment system? Let us first talk about the advantages of corona discharge: Advantages of corona discharge: 1. Low temperature process Corona discharge is not to increase the gas temperature, but to provide a local high electric field to accelerate electrons and dissociate, so almost all the energy consumed is used to dissociate the gas, and the energy required is small; it is in line with economic benefits. 2. The use of power is more common Corona discharge is the shape of the electrode to create a local high voltage, and DC or AC power can be used, generally AC power is used to avoid plasma instability, and avoid the electrode temperature is too high, and the supply voltage does not have to be like DBD High, safer for operators. 3. Simple equipment The basic device is shown in Figure 9, which is a needle-shaped or linear-shaped pair of flat-shaped electrodes, and then a side gas is passed.  Next, let me talk about the disadvantages of corona discharge: Disadvantages of corona discharge: 1. Weak processing effect It is known from the nature of corona discharge that plasma distribution will be concentrated near the maximum point of the electric field. Unlike low-voltage plasma, which is evenly distributed across the electrode, although DBD will also cause discharge concentration, at least the entire electrode will evenly distribute tiny discharges. Although the use of wire electrodes can increase the throughput, the improvement effect is limited. 2. Easily cause electrode damage Due to the concentration of plasma, needle-shaped or linear electrodes need to withstand high temperatures, so refractory materials such as tungsten (W) are mostly used, but tungsten is easily combined with carbon at high temperature and becomes brittle (carbonized), and its life is not long under normal pressure. ; The other plane electrode is also susceptible to damage caused by the local concentrated electric field (such as the principle of electrical discharge machining). The founding team of Guoxing Technology consists of a team of veterans and PhDs, and has been deeply involved in the field of equipment and electronics manufacturing for nearly two decades. Our innovative project "Continuous Plasma Etching Line and Nano Carbon Film Processing System" won the special prize of the first "Jiangdu Cup" China Innovation and Entrepreneurship Competition in 2019, and won the government's 10 million equity investment.

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