Instytut Podstawowych Problemów Techniki
Polskiej Akademii Nauk


J Sulej-Chojnacka

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

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

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