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Secondary Structures as Self-Organization Processes and Finishing Treatment of Friction Surfaces of Slide Bearings and Shafts

Materials Today: Proceedings(WoS), 2019, Volume 11, Part 1, Pages 197-202

 

Abstract. The article is devoted to the problem of replacing bronzes with cheaper aluminum alloys for slide bearings. The processes taking place on friction surface of both the aluminum alloy and steel counterbody are observed. The changes occurring during friction were investigated by scanning electron microscopy and energy-dispersive analysis. It has been revealed that secondary structures are formed on the surface during friction process and include all the chemical elements of the tribosystem which is a consequence of its self-organization. These structures are thin metal-polymer films containing mainly carbon and oxygen. Variety and content of alloying components is important as it defines the freedom degrees for self-organization.

Keywords. aluminum alloys; antifriction alloys;sliding bearings;tribotechnical properties; friction; secondcмary structures; wear; self-organization; steel; counterbody.

Исполнители: A. Mironov, P. Podrabinnik, E. Kuznetsova

Дата публикации: 02-04-2019

Источник: https://doi.org/10.1016/j.matpr.2018.12.131

The Influence of Secondary Structures on Wear Resistance of Experimental Aluminum Alloys for Monometallic Slide Bearings

Materials Today: Proceedings(WoS), 2019, Volume 11, Part 1, Pages 175-180

 

Abstract. The changes occurring on the surface of an experimental high-alloyed aluminum after friction with a steel counterbody have been investigated. The friction surface of the aluminum alloy has been studied by means of scanning electron microscopy and modification of elementary composition on it has been analyzed by energy-dispersive analysis. It has been revealed that secondary structures are formed on the surface during friction process and include all the chemical elements of the tribosystem which is a consequence of its self-organization. The influence of some chemical elements on tribotechnical characteristics of the alloy has been evaluated.

Keywords. aluminum alloy; santifriction alloys; sliding bearings; tribotechnical properties; friction; secondary structures; wear; self-organization.

Исполнители: Podrabinnik P,А. Gershman I.S, Mironov A.E.

Дата публикации: 02-04-2019

Источник: doi.org/10.1016/j.matpr.2018.12.127

The Effect of Elements of Secondary Structures on the Wear Resistance of Steel in Friction against Experimental Aluminum Alloys for Monometallic Journal Bearings

Lubricants (WoS), 2019, Volume 7. Issue 3

 

Abstract. This article describes the elemental composition of secondary structures formed on the steel contact surface during wear test against experimental Al alloys. Wear tests were carried out according to the rotating steel roller-fixed shoe of an antifriction alloy scheme under boundary lubrication conditions. The duration of the test was 40 h, and motor oil M14V2 was used as a lubricant. The microstructure and elemental characterization of the steel surface before and after the tribological test was obtained by scanning electron microscopy equipped with EDX. The simultaneous presence of various constituents of oil, steel, and Al alloys can produce both positive and negative effects on the friction characteristic of the tribosystem. It was shown that presence of Mo, F, S, Si, Ni, and Cr have a favorable effect on the wear resistance of steel and the friction coefficient of the rubbing surfaces due to the formation of secondary structures with optimal composition.

 

Keywords. steel friction surface; secondary structures; self-organization; metal-polymer films; wear resistance; aluminum journal bearings.

Исполнители: Ekaterina Kuznetsova, Iosif Gershman, Alexander Mironov, Pavel Podrabinnik, Pavel Peretyagin

Дата публикации: 07-03-2019

Источник: https://www.mdpi.com/2075-4442/7/3/21