Tribological behavior and wear mechanism of film electrolytic nanocomposites based on nickel and mixed tungsten and molybdenum oxides

Tribological behavior and wear mechanism of film electrolytic nanocomposites based on nickel and mixed tungsten and molybdenum oxides

It is shown that the electrolytic co-deposition of nickel and ultradispersed particles of mixed tungsten and molybdenum oxides changes considerably the coating morphology at both the nano- and micro-level. Under boundary lubrication at the pressure of 1 MPa the pair Ni-MoO3·WO3 — hardened steel oper...

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Bibliographic Details
Published in:Journal of friction and wear Vol. 28; no. 3; pp. 272 - 278
Main Authors: Kiselevskii, O. S., Kazachenko, V. P., Stepanova, L. I., Bodrykh, T. I.
Format: Journal Article
Language:English
Published: New York Springer Nature B.V 01-06-2007
Subjects:
Abrasive wear
Boundary lubrication
Coefficient of friction
Dry friction
Fractal geometry
Friction
Lubrication
Molybdenum
Molybdenum oxides
Nanocomposites
Nickel
Tribology
Tungsten
Wear mechanisms
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Summary:It is shown that the electrolytic co-deposition of nickel and ultradispersed particles of mixed tungsten and molybdenum oxides changes considerably the coating morphology at both the nano- and micro-level. Under boundary lubrication at the pressure of 1 MPa the pair Ni-MoO3·WO3 — hardened steel operates at the stationary regime which is characterized by the constant friction coefficient f = 0.28 ± 0.01 and the minimal wear of the pair. At dry friction abrasive wear dominates. Decrease in the pressure from 70 to 2.5 MPa during friction results in the equilibrium structure of the friction surface with the fractal dimension of the profile tending to 2.
ISSN:1068-3666
1934-9386
DOI:10.3103/S1068366607030063