Estimating Qualitative Parameters of Aluminized Coating Obtained by Electric Spark Alloying Method

Гапонова, О. П.; Kundera, C.; Кірік, Г. В.; Tarelnyk, Viacheslav; Martsynkovskyy, Vasyl; Коноплянченко, Євген; Dovzhyk, М. Ya.; Belous, Andrey; Vasilenko, Olha

doi:10.1007/978-981-13-6133-3_25

Cited by 24 publications

(10 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Often, it is proposed to solve such a problem by improving the coatings of parts. In [2], the evaluation of the quality parameters of the aluminized coating obtained by electro spark doping was given. In [3], the defective structure of nitride coatings under the action of ion irradiation was investigated.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The problem of finding the trajectory of motion of a particle under the action of forces applied to it is not easy and is generally reduced to solving systems of nonlinear differential equations of the second order [1,2]. The use of the Darboux trihedron enables an alternative approach to solving such problems.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Guide cosines ( 5), ( 7), ( 8) of orts N , T , P are represented in general form with an unknown dependence v = v(u), that is, for an unspecified curve on the surface (2). Let such a dependence be the simplest: v = u.…”

Section: Demonstration Of Determining the Guide Cosines Of A Darboux ...mentioning

confidence: 99%

See 2 more Smart Citations

Determining regularities in the construction of curves and surfaces using the Darboux trihedron

Ahmed

Nesvidomin

Pylypaka

et al. 2023

EEJET

View full text Add to dashboard Cite

The Frénet trihedron, known in differential geometry, is accompanying for a spatial and, as a special case, for a flat curve. Its three mutually perpendicular unit orts are defined uniquely for any point on the curve except for some special ones. Unlike the Frénet trihedron, the Darboux trihedron relates to the surface. Two of its unit orts are located in a plane tangent to the surface, and the third is directed normally to the surface. It can also be accompanying for the curve, which is located on the surface. To this end, one of the orts in the plane tangent to the surface must be tangent to the curve. Trihedra are movable and, with respect to a fixed coordinate system, change their position due to movement and rotation. The object of research is the process of formation of curves and surfaces, as a result of the geometric sum of the bulk motion of the Darboux trihedron and the relative motion of the point in its system under given conditions. In the study of the geometric characteristics of curves and surfaces, it is necessary to have formulas for the transition from the position of the elements of these objects in the system of a moving trihedron to the position in a fixed Cartesian coordinate system. This is exactly what needs to be solved. The results obtained are parametric equations of curves and surfaces that are tied to the initial surface. Nine guide cosines were found, three for each ort. A distinctive feature of this approach in comparison with the traditional one is the use of two systems: fixed and mobile, which is the Darboux trihedron. This approach allows us to consider in a new way the problem of the construction of curves and surfaces. The scope of practical application can be the construction of geometric shapes on a given surface. An example of such a construction is the laying of a pipeline along a given line on the surface. In addition, the sum of the relative motion of a point in a trihedron and the bulk motion of the trihedron itself over the surface gives an absolute trajectory of motion. Its sequential differentiation produces absolute speed and absolute acceleration without finding individual components, including the Coriolis acceleration. This could be used in point dynamics problems

show abstract

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

See 1 more Smart Citation

Determining regularities in the construction of curves and surfaces using the Darboux trihedron

Ahmed

Nesvidomin

Pylypaka

et al. 2023

EEJET

View full text Add to dashboard Cite

show abstract

“…The properties of the surface layers which have been obtained applying the contact and non-contact ESA methods in different environments, on various substrates and using electrodes made of various conductive materials are described in manuscript [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Technological Features for Controlling Steel Part Quality Parameters by the Method of Electrospark Alloying Using Carburezer Containing Nitrogen—Carbon Components

et al. 2022

View full text Add to dashboard Cite

A new method of surface modification based on the method of electrospark alloying (ESA) using carburizer containing nitrogen—carbon components for producing coatings is considered. New processes have been proposed that include the step of applying saturating media in the form of paste-like nitrogenous and nitrogenous-carbon components, respectively, onto the surface without waiting for those media to dry, conducting the ESA process with the use of a steel electrode-tool, as well as with a graphite electrode-tool. Before applying the saturating media, an aluminium layer is applied onto the surface with the use of the ESA method at a discharge energy of Wp = 0.13–6.80 J. A saturating medium in the form of a paste was applied to the surfaces of specimens of steel C22 and steel C40. During nitriding, nitrocarburizing and carburization by ESA (CESA) processes, with an increase in the discharge energy (Wp), the thickness, micro hardness and continuity of the “white layer” coatings, as well as the magnitude of the surface roughness, increase due to saturation of the steel surface with nitrogen and/or carbon, high cooling rates, formation of non-equilibrium structures, formation of special phases, etc. In the course of nitriding, nitrocarburizing and CESA processing of steels C22 and C40, preliminary processing with the use of the ESA method by aluminum increases the thickness, microhardness and continuity of the “white layer”, while the roughness changes insignificantly. Analysis of the phase composition indicates that the presence of the aluminum sublayer leads to the formation of the aluminum-containing phases, resulting in a significant increase in the hardness and, in addition, in an increase in the thickness and quality of the surface layers. The proposed methods can be used to strengthen the surface layers of the critical parts and their elements for compressor and pumping equipment.

show abstract

“…INTRODUCTION Coatings and materials that contain metal oxides are widely used in various fields of science and technology [1-3], foundry [4][5][6], tools [7,8], and medicine [9][10][11]. Metal oxides [12][13][14] and nanooxides [15] are introduced into their composition to improve the performance properties of functional coatings. Oxides are also introduced into the composition of electrode materials for surfacing coatings [16,17].…”

mentioning

confidence: 99%

Thermophysical Properties of Glass-Ceramic Coatings of PbO–ZnO–B$_2$O$_3$ System Doped with Al$_2$O$_3$, SiO$_2$, and BaO Oxides

Kovbasiuk¹,

Duriagina²,

Mierzwiński³

et al. 2021

Metallofiz. Noveishie Tekhnol.

View full text Add to dashboard Cite

The study of heat and electrophysical properties in the system 'stainless steel-glass-ceramic coating' is carried out. Insulating coatings based on the glass-ceramic material of the PbO-ZnO-B 2 O 3 system are synthesized on stainless steel substrates. The temperature dependences of the dielectric loss tangent and dielectric constant of the obtained functional coatings are investigated. The heat capacity, thermal diffusivity and thermal conductivity of the coatings are investigated using a laser flash analysis. These properties are then compared to ones of the substrates. By the method of differential thermal analysis, the optimal modes of heat treatment of glass-ceramic coatings are established. An optimal material with the best electrophysical properties is revealed. Possibilities of using dielectric coatings as functional layers for film heating elements are analysed.

show abstract

Estimating Qualitative Parameters of Aluminized Coating Obtained by Electric Spark Alloying Method

Cited by 24 publications

References 23 publications

Determining regularities in the construction of curves and surfaces using the Darboux trihedron

Determining regularities in the construction of curves and surfaces using the Darboux trihedron

Technological Features for Controlling Steel Part Quality Parameters by the Method of Electrospark Alloying Using Carburezer Containing Nitrogen—Carbon Components

Thermophysical Properties of Glass-Ceramic Coatings of PbO–ZnO–B$_2$O$_3$ System Doped with Al$_2$O$_3$, SiO$_2$, and BaO Oxides

Contact Info

Product

Resources

About