Investigation of Qualitative Parameters of Surface Layers Formed by Stepwise Carburizing and Sulfo-Carburizing of Steel Parts With the Use of Electroerosion Alloying Method

Martsynkovskyy, Vasyl; Tarelnyk, Viacheslav; Коноплянченко, Євген; Dovzhyk, М. Ya.; Dumanchuk, M.; Goncharenko, M. V.; Antoszewski, B.; Гапонова, О. П.

doi:10.1109/nap.2018.8915035

Cited by 2 publications

(2 citation statements)

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“…There is a process of sulfocarburizing a steel product surface by the method of electroerosion alloying (EEA) with the use of a graphite electrode, wherein immediately before alloying with the graphite electrode, a grease lubricant containing sulfur is applied onto the steel surface [ 26 ]. The main disadvantages of this method are as follows: there is an inability to form molybdenum disulfide on the surface of the parts; there is a decreased possibility of reducing the coefficient of friction; there is insufficiently high running-in and wear resistance within the friction pairs, especially without lubrication.…”

Section: Introductionmentioning

confidence: 99%

“…We have proposed a method for sulfomolybdenum metal surfaces, which include materials coated with a substance in the form of a sulfur ointment and electrospark alloying with a molybdenum electrode. In our opinion, this technology will make it possible to obtain self-lubricating coatings, as in [ 26 ], and to provide special tribotechnical properties (for example, a low coefficient of friction).…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Quality of Sulfomolybdenum Coatings Obtained by Electrospark Alloying Methods

et al. 2021

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The authors of this paper have attempted to improve the quality of surface layers applied to steel elements of machine parts constituting friction couples. The main goal of the research was to investigate an electrospark alloying method process for obtaining abrasion-resistant tribological coatings containing molybdenum disulfide on a steel surface. A substance in the form of sulfur ointment with a sulfur content of 33.3% was applied on the surfaces of C22 and C40 steel specimens. In order to determine the influence of the energy parameters of ESA equipment on the quality parameters of coatings, the ESA process was carried out using a molybdenum electrode with discharge energies Wp = 0.13; Wp = 0.55; Wp = 3.4 J. The following tests were carried out on specimens with such coatings: metallographic analysis, microhardness tests, surface roughness, and local X-ray diffraction microanalysis. The experiments revealed that sulfomolybdenum coatings consist of four zones with different mechanical properties. Depending on the discharge energy and the substrate material, the hardness of these zones varies from approx. 1100 to over 10,000 MPa. Differences in the distribution of, among others, sulfur and molybdenum in the obtained coatings, as well as differences in the microstructure of the observed coatings, were observed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of the Quality of Sulfomolybdenum Coatings Obtained by Electrospark Alloying Methods

et al. 2021

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Development Directed Choice System of the Most Efficient Technology for Improving Sliding Bearings Babbitt Covers Quality. Pt. 1. Peculiarities of Babbitt Coating Technologies

Гапонова¹,

Konoplianchenko²,

Tarelnyk³

et al. 2022

Metallofiz. Noveishie Tekhnol.

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В статті обґрунтовано важливість і актуальність проблеми підвищення робочих характеристик і ресурсу роботи бабітових підшипників ковзання (ПК), які є опорами роторів великої кількости відцентрових насосів, компресорів, турбін та іншого динамічного обладнання, що працює при висо-

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Investigation of Qualitative Parameters of Surface Layers Formed by Stepwise Carburizing and Sulfo-Carburizing of Steel Parts With the Use of Electroerosion Alloying Method

Cited by 2 publications

References 7 publications

Analysis of the Quality of Sulfomolybdenum Coatings Obtained by Electrospark Alloying Methods

Analysis of the Quality of Sulfomolybdenum Coatings Obtained by Electrospark Alloying Methods

Development Directed Choice System of the Most Efficient Technology for Improving Sliding Bearings Babbitt Covers Quality. Pt. 1. Peculiarities of Babbitt Coating Technologies

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