The Model of the Relationship of the of Micro-arc Oxidation Process Parameters Based on Graph Theory

Pecherskaya, E. A.; Golubkov, P. E.; Артамонов, Д. В.; Pecherskiy, Anatoliy V.; Mel'Nikov, O. A.; Shepeleva, Anastasiya E.

doi:10.1109/mwent47943.2020.9067487

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…The combination of high micro-hardness and wear resistance with corrosion resistance ensures the wide use of products with such coatings in many industries [1][2][3]. A large number of studies has been devoted to improving the MAO process under consideration, among which one can note: imparting new properties to coatings by adding nanoparticles to the electrolyte [4][5][6], searching for new applications of MAO coatings [7,8], improving their characteristics [9][10][11][12], optimization [13][14][15][16][17][18] and control [19,20] of the oxidation process. A number of studies are devoted to the problems of identification of complex technical systems, in particular, in [21] a new algorithm for identification of a linear-time-invariant system using MATLAB is proposed.…”

Section: Introductionmentioning

confidence: 99%

Parametric identification of the mathematical model of the micro-arc oxidation process

Pecherskaya

Semenov

Golubkov

et al. 2023

Preprint

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An electrical equivalent circuit for the micro-arc oxidation process, taking into account the resistance of the electrolyte, the resistance of the coating of the part in the form of a parallel connection of a nonlinear active resistance and reactive capacitive resistance is presented. A mathematical model describing the behavior of the electric equivalent circuit of the micro-arc oxidation process is proposed. A procedure for determining the parameters of this model, including the construction of an oscillogram of the cell resistance change and its approximation; evaluation of resistance values and capacitance of the equivalent circuit of a galvanic cell has been developed. A method for calculating the dynamic characteristics of a model of the micro-arc oxidation process is proposed. Based on the identification results, its nonlinear Simulink model is developed. The adequacy of the model is verified by comparing the calculated and experimental voltages and currents of the galvanic cell. The maximum voltage simulation error with respect to Umax does not exceed 7%, the maximum current simulation error with respect to Imax does not exceed 10%. On the basis of experimental measurements of voltages and currents using the developed method of parametric identification, the dependences of the change in model parameters on the oxidation time are obtained. It has been established that the change in the coating resistance of a part depends on the thickness of the coating being built up. The remaining parameters of the equivalent circuit in the process of micro-arc oxidation change insignificantly.

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Section: Introductionmentioning

confidence: 99%

Parametric identification of the mathematical model of the micro-arc oxidation process

Pecherskaya

Semenov

Golubkov

et al. 2023

Preprint

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show abstract

“…Currently, research is continuing in the field of corrosion of bimetallic metal compounds, a good example of which are the works [12,13]. A number of works are related to the general problems of assessing the mechanical strength of materials, including those of welds [14,15] and practical methods of control [16,17]. The modern technique of corrosion control is also discussed in papers [18,19].…”

Section: Introductionmentioning

confidence: 99%

“…All the above-mentioned factors can increase the metal corrosion. Currently, effective methods of quality control of welding joints [13][14][15][16][17][18][19][20][21][22][23] as well as the remote monitoring of the operational characteristics of structures have already been developed. Recently, intensive research has also been conducted aimed at the early detection of corrosion [18,19].…”

Section: Introductionmentioning

confidence: 99%

The Study of Metal Corrosion Resistance near Weld Joints When Erecting Building and Structures Composed of Precast Structures

2022

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Corrosion processes of the most common steel grades in various environments are the subject of numerous studies. At the same time, the corrosion of welded joints hidden in concrete thickness has not yet been studied. The authors set themselves the task of investigating this process. For this purpose, the corrosion resistance of several metals (grade St.3, U7 and their weld joints) was studied in standard test solutions, simulating a concrete pore liquid, containing sodium carbonates and hydrocarbonates, and sodium chlorides. Data on comparative corrosion resistance in saline media for specified materials were obtained. It was shown that the corrosion rate depends on the ease of CO2 ingress into the solution, and, to a lesser degree, on the metal microstructure. The surface character of the metal samples and the composition of corrosion products were investigated by scanning electron microscopy and an X-ray diffraction analysis. Chemical forms of surface compounds were determined. For the first time, it is clearly shown that the electrode coating flowing during welding does not always protect the weld from corrosion, as was previously believed. The corrosion rate, in this case, is just the same as at the surface of the metal plate of a similar composition. In the conclusion of this work, it is emphasized that in the case of alkaline and chloride-containing media, the protective coating falling from the electrode to the weld does not protect it sufficiently from corrosion.

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Intelligent Technology of Oxide Layer Formation by Micro-Arc Oxidation

Pecherskaya

Golubkov

Артамонов

et al. 2021

IEEE Trans. Plasma Sci.

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The Model of the Relationship of the of Micro-arc Oxidation Process Parameters Based on Graph Theory

Cited by 3 publications

References 12 publications

Parametric identification of the mathematical model of the micro-arc oxidation process

Parametric identification of the mathematical model of the micro-arc oxidation process

The Study of Metal Corrosion Resistance near Weld Joints When Erecting Building and Structures Composed of Precast Structures

Intelligent Technology of Oxide Layer Formation by Micro-Arc Oxidation

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