Instytut Podstawowych Problemów Techniki
Polskiej Akademii Nauk

Partnerzy

Nataliia V. Tarelnyk

Sumy National Agrarian University (UA)

Ostatnie publikacje
1.  Haponova O., Tarelnyk V., Mościcki T. P., Tarelnyk N., Półrolniczak J., Myslyvchenko O., Adamczyk-Cieślak B., Sulej-Chojnacka J., Investigation of the Structure and Properties of MoS2 Coatings Obtained by Electrospark Alloying, Coatings, ISSN: 2079-6412, DOI: 10.3390/coatings14050563, Vol.14, No.563, pp.1-15, 2024

Streszczenie:
Electrospark coatings alloyed with MoS2 have been studied. The coatings were obtained by the following two strategies: the first consisted of pre-applying molybdenum disulfide to the treated surface and alloying with a molybdenum electrode (Mo + MoS2 coating); the second consisted of applying a paste with a sulfur content of 33.3% to the treated surface and alloying with a molybdenum electrode (Mo + S coating). The structure, phase composition, and tribological properties of the coatings were investigated. The coatings have a complex structure consisting of an upper soft layer, a hardened white layer, a diffusion zone, and a substrate. Element analysis and cross-sectional hardness changes indicated that element diffusion occurred at the coating/substrate interface. The phase composition of the coatings is represented by BCC and FCC solid solutions on Fe, and MoS2 is also detected. In Mo + S coatings, the molybdenum disulfide on the surface is about 8%; in Mo + MoS2 coatings, it is 27%–46%. The obtained coatings show very good tribological properties compared to molybdenum ESA coatings. The frictional forces and coefficients are reduced by a factor of 10 and 40, depending on the test conditions.

Słowa kluczowe:
electrospark alloying, coating, structure, molybdenum disulfide, tribological properties, energy conservation

Afiliacje autorów:
Haponova O. - IPPT PAN
Tarelnyk V. - Sumy National Agrarian University (UA)
Mościcki T. P. - IPPT PAN
Tarelnyk N. - Sumy National Agrarian University (UA)
Półrolniczak J. - inna afiliacja
Myslyvchenko O. - I. M. Frantsevich Institute for Problems in Materials (UA)
Adamczyk-Cieślak B. - inna afiliacja
Sulej-Chojnacka J. - inna afiliacja
100p.
2.  Haponova O., Tarelnyk V., Tarelnyk N., Kurp P., The Formation of C-S Coatings by Electrospark Alloying with the Use Special Process Media, Solid State Phenomena, ISSN: 1662-9779, DOI: 10.4028/p-5KfyZQ, Vol.355, pp.85-93, 2024

Streszczenie:
The paper presents an analysis of technologies for improving the quality parameters of the surface layers of parts, which were carried out by the method of electrospark alloying (ESA) and by additional saturation of surfaces with alloying elements from special process media (STM). The technology of sulfocementation was considered. Metallographic and hardness tests after sulfocementation by ESA showed that the treated surface consists of layers: "soft", hardened and base metal. As the discharge energy increases, the thickness, microhardness and integrity of the coating increase. The presence of sulfur in STM promotes the sulfidation process. It is shown that sulfur accumulates on the surface of the metal at a depth of up to 30 μm. This zone is characterized by reduced microhardness. A strengthened layer is formed under this layer, it has an increased carbon content and high microhardness.

Słowa kluczowe:
electro-spark alloying, special technological environment, coating, sulfocementation, microstructure, microhardness

Afiliacje autorów:
Haponova O. - IPPT PAN
Tarelnyk V. - Sumy National Agrarian University (UA)
Tarelnyk N. - Sumy National Agrarian University (UA)
Kurp P. - Kielce University of Technology (PL)
3.  Haponova O., Tarelnyk V., Tarelnyk N., Myslyvchenko M., Nanostructuring of Metallic Surfaces by Electrospark Alloying Method, The Journal of The Minerals, ISSN: 1047-4838, DOI: 10.1007/s11837-023-05940-1, pp.1-13, 2023

Streszczenie:
A new method of nanostructuring of the surface by electrospark alloying method (ESA) using special processing media (SPM) with carbon nanotubes is proposed. The influence on the ESA regimes and the composition of the SPM on the microstructure and hardness of the coatings has been considered. While processing the Armco iron, with an increase in the discharge energy, the thickness and continuity of the coating increase. In the microstructures, the nanoscale phases of 40 nm to 1300 nm are detected, and they are evenly distributed in the coatings. Adding nanotubes helps to increase the continuity, thickness and hardness. Because of the ESA process, coatings with a uniform distribution of molybdenum are formed. Carbon, apparently in the form of the carbon nanotubes, is concentrated on the surfaces of the samples being processed, regardless of the discharge energy during the ESA process. The use of the proposed ESA method has a positive effect on the quality parameters of the coating.

Afiliacje autorów:
Haponova O. - IPPT PAN
Tarelnyk V. - Sumy National Agrarian University (UA)
Tarelnyk N. - Sumy National Agrarian University (UA)
Myslyvchenko M. - I. M. Frantsevich Institute for Problems in Materials (UA)
100p.
4.  Tarelnyk V., Haponova O., Tarelnyk N., Myslyvchenko O., Aluminizing of Metal Surfaces by Electric-Spark Alloying, Uspekhi Fiziki Metallov, ISSN: 1608-1021, DOI: 10.15407/ufm.24.02.282, Vol.24, No.2, pp.282-318, 2023

Streszczenie:
The analysis of the influence of the parameters of electrospark alloying with an aluminium electrode on the quality (roughness, microstructure of the coating, its continuity, phase composition, and microhardness) of the aluminized layer is presented. The effect of finishing methods after aluminizing is evaluated. The heat resistance of the obtained coatings is studied. Metallographic analysis shows that the coating consists of three sections: a ‘white’ layer, a diffusion zone, and the base metal. With an increase in the discharge energy, such quality parameters of the surface layer as thickness, microhardness of both a ‘white’ layer and a transition zone, and roughness are increased. The continuity of a ‘white’ layer at the discharge energy Wp = 0.52 J is low (of 50–60%); with a subsequent increase in the discharge energy, it increases and, at Wp = 6.8 J, it is of 100%. An increase in the discharge energy during electric-spark alloying (ESA) leads to a change in the chemical and phase compositions of the layer: at low discharge energies, a layer is formed, consisting mainly of α-Fe and aluminium oxides. As Wp increases, the layer consists of iron and aluminium intermetallic compounds, as well as free aluminium, that is confirmed by the data of local x-ray microanalysis. For practical application, it is possible to recommend the process of aluminizing by the ESA method, using the modes (discharge energy in the range of 4.6–6.8 J and productivity of 2.0–3.0 cm2/min). Such process provides the formation of a ‘white’ layer with a thickness of 70–130 µm, microhardness of 5000–7500 MPa, roughness (Ra) of 6–9 µm, and continuity of 95–100%. In order to increase the thickness of the aluminized layer, it is recommended to preliminarily apply grease containing aluminium powder to the steel surface and, without waiting for it to dry, carry out ESA with an aluminium electrode. In this case, the coating continuity is of 100%, the layer thickness is of up to 200 µm, and the microhardness is of 4500 MPa. The paper presents the results of study of the quality parameters of multicomponent aluminium-containing coatings of Al–S, Al–C–S, and Al–C–B systems. Replacing the aluminium electrode with graphite one leads to a decrease in the thickness and continuity of a ‘white’ layer, respectively, to 50 µm and 30%. In turn, the microhardness on the surface increases to 9000 MPa. The addition of 0.7 boron to the consistency substance leads to an increase in the thickness and continuity of a ‘white’ layer, respectively, up to 60 µm and 70%. The microhardness on the surface rises to 12000 MPa. In order to reduce the roughness of the surface layer and to obtain continuous coatings, it is recommended to carry out ESA with an aluminium electrode, but at lower modes.

Słowa kluczowe:
electrospark alloying, coating, aluminizing, microhardness, continuity, roughness, structure, x-ray diffraction analysis, x-ray spectral analysis

Afiliacje autorów:
Tarelnyk V. - Sumy National Agrarian University (UA)
Haponova O. - IPPT PAN
Tarelnyk N. - Sumy National Agrarian University (UA)
Myslyvchenko O. - I. M. Frantsevich Institute for Problems in Materials (UA)
70p.
5.  Haponova O., Tarelnyk Viacheslav B., Antoszewski B., Radek N., Tarelnyk Nataliia V., Kurp P., Myslyvchenko Oleksandr M., Hoffman J., Technological Features for Controlling Steel Part Quality Parameters by the Method of Electrospark Alloying Using Carburezer Containing Nitrogen—Carbon Components, Materials, ISSN: 1996-1944, DOI: 10.3390/ma15176085, Vol.15, No.6085, pp.1-14, 2022

Streszczenie:
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

Słowa kluczowe:
electrospark alloying,coatings,roughness,structure,microhardness,continuity,X-ray diffraction analysis,nitriding,nitrocarburizing,carburization

Afiliacje autorów:
Haponova O. - IPPT PAN
Tarelnyk Viacheslav B. - Sumy National Agrarian University (UA)
Antoszewski B. - Kielce University of Technology (PL)
Radek N. - inna afiliacja
Tarelnyk Nataliia V. - Sumy National Agrarian University (UA)
Kurp P. - Kielce University of Technology (PL)
Myslyvchenko Oleksandr M. - I. M. Frantsevich Institute for Problems in Materials (UA)
Hoffman J. - IPPT PAN
140p.
6.  Tarelnyk V., Haponova O., Konoplianchenko V., Tarelnyk N., Dumanchuk M., Pirogov V., Voloshko T., Hlushkova D., Development of a System Aimed at Choosing the Most Effective Technology for Improving the Quality of Babbitt Coatings of Sliding Bearings. Pt. 2. Mathematical Model of Wear of Babbitt Coatings. Criteria for Choosing the Technology of Deposition of Babbitt Coatings, Metallofizika i Noveishie Tekhnologii, ISSN: 1024-1809, DOI: 10.15407/mfint.44.12.1643, Vol.44, No.12, pp.1643-1659, 2022

Streszczenie:
in the article, a direct choice system of the most rational technology for applying a babbitt coating on the liners of sliding bearings (SB) is developed, which takes into account both economic and environmental requirements. On the basis of the performed research, a physically substantiated mathematical model of the babbitt-coatings’ wear process (wear equation) is proposed, which allows solving both the direct problem of determining weight and linear wears based on the known work of friction, as well as the inverse problem of finding the necessary work of friction to obtain the required amount of weight or linear wears. With knowing the time to reach a certain amount of wear, it becomes possible to operate the products more rationally, timely assigning the repair time and friction-surface catastrophic-wear preventing. In the course of research, a methodology is developed for determining the constants of the wear equation: activation energy (EA) as well as maximum weight (Δmб.п.н) and linear (Δhб.п.н) wears, which can be used as selection criteria for the most rational technology of applying a babbitt coating

Słowa kluczowe:
sliding bearing, babbitt, coating, wear, structure, transition layer, adhesion strength, electrospark alloying, mathematical model

Afiliacje autorów:
Tarelnyk V. - Sumy National Agrarian University (UA)
Haponova O. - IPPT PAN
Konoplianchenko V. - inna afiliacja
Tarelnyk N. - Sumy National Agrarian University (UA)
Dumanchuk M. - inna afiliacja
Pirogov V. - inna afiliacja
Voloshko T. - inna afiliacja
Hlushkova D. - inna afiliacja
40p.
7.  Tarelnyk V., Haponova O., Konoplianchenko V., Tarelnyk N., Dumanchuk M., Mikulina M., Pirogov V., Gorovoy S., Medvedchuk N., Development Directed Choice System of the Most Efficient Technology for Improving Sliding Bearings Babbitt Covers Quality. Pt. 1. Peculiarities of Babbitt Coating Technologies, Metallofizika i Noveishie Tekhnologii, ISSN: 1024-1809, DOI: 10.15407/mfint.44.11.1475, Vol.44, No.11, pp.1475-1493, 2022

Streszczenie:
The article substantiates the importance and relevance of increasing problem of the performance and service life of babbitt sliding bearings (SB), which are the rotors supports of a large number of centrifugal pumps, compressors, turbines and other dynamic equipment operating at high operating parameters (speeds, loads and temperatures), as well as in conditions of corrosive, abrasive and other types of working environment’s influence. The analysis of the babbitt SBs production technology and operating conditions showed that the reason for the decrease in their durability are factors that are formed both at the stage of manufacture and during operation. SB failure under normal operating conditions is a consequence of wear various types: cavitation, abrasive wear, damage due to plastic deformations, fatigue damage, etc. The antifriction layer wear resistance depends on the mode of operation and design of the bearing, the physical properties of the connection between the layer and the base, the rigidity of the shaft and the bed under the bearings. As established, the bearing anti-friction layer quality must be evaluated according to the following criteria: adhesion strength of the coating to the base, cohesive strength of the anti-friction layer, porosity, and homogeneity of the structure. As established, during the production of SBs, the formation by the method of electrospark alloying (ESA) of a copper intermediate layer, firmly bonded with steel substrate, and tin layer (formation of solid substitution solutions) and babbitt provides a stronger (by 35%) of adhesion, compared to traditional technology (steel 20 + babbitt), steel substrate with babbitt, as well as more intensive removal of heat from the friction zone. As determined, a new technology in which all operations are carried out by the ESA method can be a reserve for improving the babbitt coatings formation quality, which significantly affects the durability of the SB. As determined, in order to determine a more rational technology for applying babbitt coatings, it is necessary to develop a physically based mathematical model that relates the wear of a certain amount of babbitt to the frictional work spent on it.

Słowa kluczowe:
sliding bearing, babbitt, coating, wear, structure, transition layer, adhesion strength, electrospark alloying, mathematical model

Afiliacje autorów:
Tarelnyk V. - Sumy National Agrarian University (UA)
Haponova O. - IPPT PAN
Konoplianchenko V. - inna afiliacja
Tarelnyk N. - Sumy National Agrarian University (UA)
Dumanchuk M. - inna afiliacja
Mikulina M. - inna afiliacja
Pirogov V. - inna afiliacja
Gorovoy S. - inna afiliacja
Medvedchuk N. - inna afiliacja
40p.
8.  Tarelnyk V., Haponova O., Konoplianchenko V., Tarelnyk N., Mikulina M., Gerasimenko V., Vasylenko O., Zubko V., Melnyk V., Properties of Surfaces Parts from X10CrNiTi18-10 Steel Operating in Conditions of Radiation Exposure Retailored by Electrospark Alloying. Pt. 3. X-ray Spectral Analysis of Retailored Coatings, Metallofizika i Noveishie Tekhnologii, ISSN: 1024-1809, DOI: 10.15407/mfint.44.10.1323, Vol.44, No.10, pp.1323-1333, 2022

Streszczenie:
in article we present the results of studies of the local x-ray spectral analysis of coatings formed by the electrospark alloying (ESA) method at the discharge energy Wp = 0.13, 0.52 and 0.9 J by anodes from nickel and stainless steel X10CrNiTi18-10 on the cathode surface from X10CrNiTi18-10 steel. During ESA by stainless steel X10CrNiTi18-10 anode with an increase Wp in characteristic points and from the entire investigated surface of the coating, the quantitative elemental composition is not changed. The analysis of elements distribution over the depth of the formed layer is showed that when using the electrode tool from steel X10CrNiTi18-10 with an increase in Wp, there are a slight decrease in chromium and an increase in nickel and titanium in the surface layer. When steel X10CrNiTi18-10 is replaced by nickel with an increase in Wp, the concentration of nickel on the coating surface decreases from 95.38 to 89.04%. As the recession deepens from the coating surface, the concentration of nickel gradually decreases, respectively, at Wp = 0.13, 0.52 and 0.9 J from 96.29, 90.29 and 89.04% on the surface to 9.0, 10.30 and 9.9% at depth: 120, 165 and 240 μm. At the same time, the concentration of chromium, titanium and iron gradually increases.

Słowa kluczowe:
electrospark alloying, nickel, steel, x-ray spectral analysis, scan step, topography, spectrum

Afiliacje autorów:
Tarelnyk V. - Sumy National Agrarian University (UA)
Haponova O. - IPPT PAN
Konoplianchenko V. - inna afiliacja
Tarelnyk N. - Sumy National Agrarian University (UA)
Mikulina M. - inna afiliacja
Gerasimenko V. - inna afiliacja
Vasylenko O. - inna afiliacja
Zubko V. - inna afiliacja
Melnyk V. - inna afiliacja
40p.
9.  Haponova O., Tarelnyk N., Properties of Surfaces Parts from X10CrNiTi18-10 Steel Operating in Conditions of Radiation Exposure Retailored by Electrospark Alloying. Pt. 2. Features of the Structural State of the Retailored Surfaces, Metallofizika i Noveishie Tekhnologii, ISSN: 1024-1809, DOI: 10.15407/mfint.44.09.1103, Vol.44, No.9, pp.1103-1115, 2022

Streszczenie:
In article we present the results of studies of the structural state of coatings formed by the method of electrospark alloying at the discharge energy Wp = 0.13, 0.52 and 0.9 J by anodes from nickel and stainless steel X10CrNiTi18-10 on the cathode surface from X10CrNiTi18-10 steel. Anode materials, such as nickel and X10CrNiTi18-10 steel are recommended as materials, which is advisable to use for restoring the surfaces of parts from X10CrNiTi18-10 steel operating in conditions of radiation exposure. Metallographic analysis of the formed coatings showed that their microstructure consists of 3 zones: 1) ‘white layer’ is the layer that cannot be etched with conventional reagents, 2) transition zone or diffuse zone, 3) base metal. Using nickel and steel X10CrNiTi18-10 with increasing discharge energy, the thickness of the hardened layer, microhardness, continuity and thickness of the white layer, as well as the surface roughness are increased. Replacing the nickel anode with steel X10CrNiTi18-10 surface roughness is increased and the thickness of the hardened layer is decreased.

Słowa kluczowe:
electrospark alloying, nickel, steel, metallographic analysis, structure, layer thickness, microhardness, roughness, continuity

Afiliacje autorów:
Haponova O. - IPPT PAN
Tarelnyk N. - Sumy National Agrarian University (UA)
40p.

Prace konferencyjne
1.  Haponova O., Tarelnyk V.B., Antoszewski B., Tarelnyk N.V., Nanostructure Formation During Electrospark Alloying, XIV International Conference Electromachining 2023, 2023-10-09/10-11, Bydgoszcz (PL), No.020013, pp.1-12, 2023

Streszczenie:
There have been considered the coating structure modification after electrospark alloying (ESA) by the Moelectrode using a paste with carbon nanotubes. It was showed that the regimes and composition of the paste influenced the microstructure, continuity, roughness, and hardness of the coatings. The microstructures after the ESA of the Armco iron were studied. The use of higher discharge energy in ESA leads to an increase in surface roughness, coating thickness, and coating continuity. The use of higher discharge energy during ESA results in an increase in surface roughness, coating thickness, and coating continuity. The microstructures reveal nanoscale phases from 40 to 60 nm, which are evenly distributed in the coatings. The addition of ARKEMA nanotubes increases the hardness to 608 HV. The results of local X-ray diffraction analysis showed that carbon is concentrated on the surface, while molybdenum is distributed homogeneously in the coating. The addition of nanotubes to the paste before ESA improves hardness and continuity. The effect of nanotubes on the structure and properties of coatings is positive.

Afiliacje autorów:
Haponova O. - IPPT PAN
Tarelnyk V.B. - Sumy National Agrarian University (UA)
Antoszewski B. - Kielce University of Technology (PL)
Tarelnyk N.V. - Sumy National Agrarian University (UA)

Abstrakty konferencyjne
1.  Haponova O., Tarelnyk V., Mościcki T., Tarelnyk N., Hoffman J., A new method for the formation of tribotechnical coatings by the method of electrospark alloying, FAST/SPS, 2nd Conference on FAST/SPS From Research to Industry, 2023-10-16/10-18, Warszawa (PL), pp.12-12, 2023
2.  Tarelnyk V., Konoplianchenko I., Haponova O., Radionov O., Antoszewski B., Kundera C., Tarelnyk N., Voloshko T., Bondarev S., Gerasimenko V., Ryasna O., Sarzhanov B., Polyvanyi A., Application of Wear-Resistant Nanostructures Formed by Ion Nitridizing & Electrospark Alloying for Protection of Rolling Bearing Seat Surfaces, 2022 IEEE, 2022 IEEE 12th International Conference Nanomaterials: Applications & Properties (NAP), 2022-09-11/09-16, Kraków (PL), DOI: 10.1109/NAP55339.2022, pp.1-1, 2022

Streszczenie:
The paper analyzes the works devoted to solving problems affecting the bearing life of rolling bearings (RB) and to revealing reserves for its increase. There proposed a new technology for forming a protective coating on the shaft bearing journal or on the surface of a sleeve pressed thereon, which consists in the use of a combined technology comprising a process for stage-by-stage aluminizing by the method of electrospark alloying (A ESA ) followed by a process of ion nitriding (IN). Such a coating has a 100% continuity, the greatest thickness of the increased hardness zone of 300 µm, the surface microhardness of 7700 MPa, and the roughness (Ra) after non-abrasive ultrasonic finishing (NAUF) of 0.5 µm, The results of the X-ray microanalysis indicate that an increased content of aluminum is observed in the surface layer at the distance of up to 40 µm after the stage-by-stage AESA process. The research results have shown that in order to restore the shaft bearing journal neck surface layer hardness, which had been lost because of the repair work, the step-by-step AESA technology is more preferable. Thus, when removing the surface layer to a depth of 0.15 mm and subsequently carburizing by the method of electrospark alloying (C ESA ), the maximum microhardness of the surface layer is 7250 MPa, and the thickness of the zone of the increased hardness is 150 µm, At subsequently processing by the AESA method, these quality parameters of the surface layer are, respectively, 7350 MPa and 210 µm. The use of the NAUF method, both after C ESA and AESA processes, makes it possible to reduce the surface roughness up to Ra = 0.5 µm. To decrease the surface roughness of the RB housing seat, it is advisably to practice burnishing with a diamond tool (DB) after the A ESA process

Afiliacje autorów:
Tarelnyk V. - Sumy National Agrarian University (UA)
Konoplianchenko I. - inna afiliacja
Haponova O. - IPPT PAN
Radionov O. - inna afiliacja
Antoszewski B. - Kielce University of Technology (PL)
Kundera C. - inna afiliacja
Tarelnyk N. - Sumy National Agrarian University (UA)
Voloshko T. - inna afiliacja
Bondarev S. - inna afiliacja
Gerasimenko V. - inna afiliacja
Ryasna O. - inna afiliacja
Sarzhanov B. - inna afiliacja
Polyvanyi A. - inna afiliacja

Prawa ochronne
Numer/data zgłoszenia
Ogłoszenie o zgłoszeniu
Twórcy
Rodzaj i tytuł chronionego dobra intelektualnego
Kraj objęcia ochroną, Podmioty uprawnione
Numer prawa ochronnego
Ogłoszenie o udzieleniu
pdf
u 2022 04564
2022-12-05
-
-
Haponova O., Tarelnyk N.V., Tarelnyk V.B., Zhylenko T.I., Myslyvchenko O.M., Okhrimenko V.O., Holub N.R.
wzór użytkowy
Method for increasing the wear resistance of the working surfaces of steel rings of pulsed mechanical seals subject to radiation irradiation
UA, Sumski Uniwersytet Państwowy
153145
Biuletyn 21
2023-05-24
u 2022 04557
2022-12-05
-
-
Haponova O., Tarelnyk V.B., Zhylenko T.I., Tarelnyk N.V.
wzór użytkowy
The method of alitising steel parts
UA, Tarelnyk N.V.
153741
Biuletyn 34
2023-08-23
u 2022 04554
2022-12-02
-
-
Tarelnyk N.V., Haponova O., Zhylenko T.I., Furmańczyk P., Hoffman Jacek
wzór użytkowy
The method of alitising steel parts
UA, Tarelnyk N.V.
153740
Biuletyn 34
2023-08-23
u 2022 03922
2022-10-19
-
-
Haponova O., Tarelnyk N.V., Tarelnyk V.B., Zhylenko T.I., Myslyvchenko O.M., Dudchenko V.V., Holub N.R.
wzór użytkowy
Method for increasing the wear resistance of steel parts of equipment operating under radiation exposure
UA, Sumski Uniwersytet Państwowy
152967
Biuletyn 18
2023-05-03
u 2021 04858
2021-08-30
-
-
Tarelnyk V. B., Martsynkovsky V. S., Haponova O., Konoplyanchenko E.V., Sarzhanov O.A., Tarelnyk N.V., Mikulina M.O., Lazarenko A.D., Polivany A.D.
wzór użytkowy
Method of nitro-cementation of steel parts surfaces by the method of electric spark alloying (ESA)
UA, Martsynkovsky V. S.
150385
Biuletyn 6
2022-02-09

Kategoria A Plus

IPPT PAN

logo ippt            ul. Pawińskiego 5B, 02-106 Warszawa
  +48 22 826 12 81 (centrala)
  +48 22 826 98 15
 

Znajdź nas

mapka
© Instytut Podstawowych Problemów Techniki Polskiej Akademii Nauk 2024