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Wear behaviour of metals in dry sliding against molybdenum with current collection
https://doi.org/10.22349/1994-6716-2020-101-1-118-125
Abstract
The possibility of high electrical conductivity of dry sliding electrical contact against molybdenum counterbody was studied. It was found that metals W and Cu were not able to form a sliding electrical contact with high wear resistance at current density higher 100 A/cm2 . The characteristics of the contacts of iron containing metals were slightly better than the contact characteristics of non-ferrous metals due to weaker adhesion. Using X-ray phase analysis, it was shown the absence of oxides in the sliding zone of non-ferrous metals. This led to their strong wear and contact’s low electrical conductivity. In the contact zone of iron containing samples the formation of FeO was observed that made it possible to reduce wear. This means that high electrical conductivity is unattainable in sliding with current collection against molybdenum.
Keywords
structure and phase composition of the surface layer,
viscous plastic flow of the transfer layer,
deterioration and wear of the sliding surface,
sliding electrical contact,
electrical conductivity of the sliding contact
Supporting agencies: The study was carried out within the framework of the Program of Basic Scientific Research of the National Academies of Sciences for 2013–20 (part 3, section 23).
About the Authors
M. I. Aleutdinova
Institute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of Sciences (ISPMS SB RAS)
Russian Federation
Cand. Sc. (Eng)
Russian Federation
Cand. Sc. (Eng)
V. V. Fadin
Institute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of Sciences (ISPMS SB RAS)
Russian Federation
Cand. Sc. (Eng)
Russian Federation
Cand. Sc. (Eng)
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Review
For citations:
Aleutdinova M.I., Fadin V.V. Wear behaviour of metals in dry sliding against molybdenum with current collection. Voprosy Materialovedeniya. 2020;(1(101)):118-125. (In Russ.) https://doi.org/10.22349/1994-6716-2020-101-1-118-125
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