Study of Aluminum Influence on the Adhesion of Stainless Steel  in Flame Spraying

Stepanov, S. N.; Larionova, T. A.; Степанов, С. С.

doi:10.31897/pmi.2020.5.11

Cited by 5 publications

(4 citation statements)

References 7 publications

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“…Стабильность и воспроизводимость цветовых характеристик наносимых символов достигается за счет определения технологических параметров процесса лазерной маркировки в зависимости от теплофизических свойств маркируемого материала [32][33][34]. Варьированием соответствующих параметров процесса, таких как ток накачки диодной линейки, частота следования импульсов, скорость следования импульсов и пиксельное разрешение ячейки были найдены базовые палитры для каждого материала (см.…”

Section: композиционные материалы многофункциональные покрытия из нан...unclassified

Features of colour ultradense multidimensional nanobarcodes created on the surface of items made of non-ferrous metals and their alloys

Petkova,

Ganzulenko

2023

tsm

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The authors of this paper developed an original method to create colour matrix codes aimed at counterfeit protection of items, preventing unauthorized use of information, verifying the authenticity of items, ensuring their clear identification, increasing the ID capacity (text, graphical, audio and video information and other digital data) approximately by 5 times and creating a machine-readable template image of such ID. The proposed colour code helps transform the known black-and-white nanobarcode into a multi-dimensional colour code applied to a two-dimensional matrix or increase the nanobarcode capacity by several times. Multi-dimensional colour matrix codes enable to increase the amount of data contained in the colour code due to the use of a graphical two-dimensional matrix to which all layers of binary-coded data are applied. It is possible to create digital codes and apply codes to metal surface by printing or laser marking. Definition of reference colour cells ensures that the code will be read and decoded even if the technical characteristics of printers and scanners differ. The obtained colour palettes and databases of laser marking regimes applicable to titanium, copper and aluminium alloys ensure reproducibility of the main colours for all the mentioned materials. Through the use of four or eight colours in the colour matrix code instead of merely black and white in the two-dimensional one, the code capacity can be increased to two or three bits of information depending on the number of colour layers. By making use of four or eight stable colours, including the background colour, one can create two-and three-layer colour matrix codes on the surface of each of the above listed materials. Candidate of Technical Sciences E. V. Larionova took an active part in the work, who formulated the principles of creating a 3-dimensional color nanobarkode.

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Section: композиционные материалы многофункциональные покрытия из нан...unclassified

Features of colour ultradense multidimensional nanobarcodes created on the surface of items made of non-ferrous metals and their alloys

Petkova,

Ganzulenko

2023

tsm

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“…Today, special attention is paid to the machining of materials with special physical and mechanical properties (15,16), including aluminium-based alloys (17)(18)(19). The machining of aluminium and its alloys is a rather labourintensive process.…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of Abrasive Finishing of Surfaces of Parts Made of Aluminium Alloy of АМts Grade in Magnetic Field

Keksin,

Sorokopud,

Zakirov

2024

IJE

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The scientific article presents the results of research to identify the regularities arising from the abrasive finishing of the surfaces of parts made of aluminium alloy grade (AMts) in a magnetic field. As a result of conducted experiments the relations between variable factors of abrasive finishing in a magnetic field and quality indicators of surfaces of parts from aluminium alloy of mark AMts which have been expressed by means of physical and statistical model of graphic dependences of functions defined as Ra = f(t, n) and Ra = f(B, S). It has been established that abrasive finishing in a magnetic field allows for an insignificant amount of time t = 4...12 min to reduce surface roughness from initial Ra = 1.3...1.9 μm to Ra = 0.23...0.85 μm (depending on processing conditions). In addition, the optimization problem of determining the optimal conditions of abrasive finishing in a magnetic field, providing the achievement of the minimum value of roughness Ramin = 0.23 μm of the surfaces of parts made of aluminium alloy grade AMts was solved.

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“…Влияние шероховатости поверхности основания на пробивное напряжение Измерение шероховатости используется при решении различных задач [14][15][16][17]. Шероховатость характеризуется, как правило, среднеарифметическим отклонением профиля на протяжении базовой длины (R a ) и высотой неровностей профиля по десяти точкам (R z ) [18].…”

Section: Introductionunclassified

Influence of Interfering Parameters in Electrospark Testing of Paint Coatings

Syasko,

Gnivush,

Musikhin

2023

Vestnik IzhGTU imeni M.T. Kalashnikova

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An analysis is made of interfering factors, such as base surface roughness and partial discharges, which can affect the process of continuity testing by the electrospark method, reducing the breakdown voltage of the interelectrode gap and leading to false alarms. To consider the influence of the coating base surface roughness, the distribution of the electric field in the system of two electrodes with a given roughness was constructed in the Ansys Electronics Desktop program. An experiment was carried out to determine the breakdown voltage of the air gap for different values of the surface roughness of one of the electrodes. A film 0.05 mm thick with a hole simulating a defect was placed on the roughness sample. An electrode was placed on the surface of the film in the region of the hole, to which a control voltage was applied. The voltage was increased to the value of the breakdown voltage and fixed. The experiment showed that the breakdown voltage of the interelectrode gap, simulating a through coating defect, practically does not change with a change in roughness. The process of electrospark testing can be affected by the waviness of the coating and the inhomogeneity of its thickness, which lead to the formation of air gaps between the electrode and the coating surface. It is shown that in this case the electric field intensity in the air gap will be higher than the field intensity in the dielectric coating, which, in turn, creates conditions for the formation of partial discharges in the interelectrode gap. Partial discharge creates a current pulse proportional to the capacitance of the air gap, which can be mistaken for the spark discharge current of the entire gap, and therefore as a defect, while the presence of a partial discharge does not mean the presence of a defect. Thus, it can be argued that partial discharges are an interfering parameter, the influence of which must be taken into account. Measures are proposed to reduce the influence of partial discharges on the continuity control process. To eliminate the possibility of false alarms from partial discharges, it is necessary to measure the parameters of the voltage pulse caused by the full discharge current and take them into account when making a decision about the presence of a defect.

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Study of Aluminum Influence on the Adhesion of Stainless Steel in Flame Spraying

Cited by 5 publications

References 7 publications

Features of colour ultradense multidimensional nanobarcodes created on the surface of items made of non-ferrous metals and their alloys

Features of colour ultradense multidimensional nanobarcodes created on the surface of items made of non-ferrous metals and their alloys

Peculiarities of Abrasive Finishing of Surfaces of Parts Made of Aluminium Alloy of АМts Grade in Magnetic Field

Influence of Interfering Parameters in Electrospark Testing of Paint Coatings

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