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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, 2024Streszczenie: 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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