Abstract
The paper shows good prospects of modifying the working surfaces of metal products by low-temperature plasma treatment. We suggest a treatment monitoring method based on the recording of signals that arise in the electrical circuit of the processing unit and present the results of this approach realization. The study substantiates the expediency, assesses possibility, and shows the efficiency of controlling the low-temperature plasma modification based on the correction of its operating parameters according to monitoring data.
Highlights
Modification of the working surfaces of metal products for various purposes is one of the promising research directions for increasing their reliability in terms of durability
The performed studies allow us to conclude that in the case of chaotic behavior of the process of low-temperature plasma exposure on the surface of the product, the its organization and monitoring by electrical signals are advisable, as they enable to determine the moments of adjustment of operating parameters and make it possible to control the process
If the information production is considered as the process of generating some signals that characterize a particular reaction of the system to the action of an external environment, the monitoring data can be considered as a representation of these reactions, which correspond to the path of the feedback signal
Summary
Modification of the working surfaces of metal products for various purposes is one of the promising research directions for increasing their reliability in terms of durability. An electrostatic field forms a stream of charged plasma particles generated during the ionization of atoms and molecules in a gas due to the electromagnetic field, to the product surface This contributes to the release of the amount of heat sufficient for melting a thin surface layer, and leads to significant structural and phase changes. The studies performed showed that the effectiveness of modification depends on how much its operating parameters – the magnetron anode current (I ) and displacement potential (U) – retain their efficiency under the changing properties of the product surface layer In this regard, studies have been carried out on the rationale for monitoring the process according to the parameters of the signals arising in the electrical circuit of the processing unit [4,5,6]. The research results served as the basis for solving the problem of monitoring and evaluating the possibility of controlling the process of low temperature plasma modification in order to increase its efficiency
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