Wear-Resistant Composites Produced from Tool Steel Waste for Contact Joints of High-Speed Printing Machines

Roik, T. A.; Gavrysh, O. A.; Vitsiuk, Iu. Iu.; Kholiavko, V. V.

doi:10.1007/s11106-023-00385-2

Cited by 2 publications

(1 citation statement)

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“…Severe wear and tear of connected parts in friction units results in loss of kinetic accuracy of mechanisms, violation of machine working space tightness, disruption of normal lubrication, etc. As a result, both the serviceability and productivity of the friction unit are reduced, resulting in a reduction in product quality [1,2]. This applies to a range of friction elements in dynamic equipment.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Structure and Properties of MoS2 Coatings Obtained by Electrospark Alloying

Haponova,

Tarelnyk,

Mościcki

et al. 2024

Coatings

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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.

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Section: Introductionmentioning

confidence: 99%