Effect of surface-active media on contact elastoplastic deformations of surface layers of metals and their tribological characteristics

Kuksenovaa, L.I.; Savenko, V.I.

Авторы: Kuksenovaa L.I., Savenko V.I.
Журнал: Russian Journal of Physical Chemistry A
Том: 98
Номер: 7
Год издания: 2024
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 1411
Последняя страница: 1424
DOI: 10.1134/S0036024424700419
Аннотация: A materials science analysis of the tribological efficiency of dispersed systems used in the produc-tion of plastic lubricants for friction units of machines and devices is performed, based on concepts of physi-cochemical mechanics. Changes in microstructural characteristics during the tribodeformation of BrA5bronze under conditions of the Rehbinder effect are considered as an example. This determines the possibilityof achieving the selective transfer mode during the operation of tribological interfaces. It is shown that whenbronze is rubbed in surface-hardening or inert lubricating media, its rate of wear is Ih = 1.5 × 10 −7 −4.0 ×10 −8 . When bronze is rubbed in ambivalent media (e.g., certain polyesters), both forms of the effect areobtained: surface-plasticizing and surface-hardening, with the latter predominating. At the same time, thewear resistance of bronze is at least doubled. When bronze is rubbed in surface-plasticizing media, two crys-tallographically isostructural solid solutions form in the near-surface layer of bronze, one of which is enrichedin copper. The rate of bronze wear is reduced to a value of Ih = 4.0 × 10 −8 . It is shown that using dispersedsystems with surface-plasticizing dispersed phases in tribocouplings as lubricants creates a wear-resistantstructure in the antifriction material and establishes a stable low-wear selective transfer mode during the tri-bocoupling process.
Добавил в систему: Савенко Владислав Ильич

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