Investigations of the effect of surface temperatures in sliding contact

Uetz, H.; Sommer, Karl

doi:10.1016/0043-1648(77)90133-8

Cited by 27 publications

(8 citation statements)

References 3 publications

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“…The occurrence of such hot spots leads to surface smoothing by filling existing valleys with sintered reaction products [2]. Another possible process is tribochemical erosion of asperities [1] or matrix amorphization [2,3]. In addition, there is evidence for the formation of an oxide layer in the rolling contact zone with a thickness in the range of 1-10 4 nm.…”

Section: Introductionmentioning

confidence: 99%

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Nanomechanical and analytical investigations of tribological layers for wear protection in slow-running roller bearings

Reichelt

Weirich

Richter

et al. 2006

Philosophical Magazine

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In a tribological system consisting of roller thrust bearings and various lubricants, we investigated reaction layers formed in the presence of lubricants with low wear protection, high wear and fatigue protection as well as high wear but low fatigue protection. The bearings were tested under heavy-duty conditions in an FE-8 test rig in order to rapidly asses the efficiency of different reaction layer systems. Chemical composition and microstructure analysis of the layers was subsequently carried out by transmission electron microscopy on thin cross-sections prepared by the focused ion beam technique. The nanomechanical properties of the different tribological layers were analyzed by nanoindentation. The formation and structure of the layered system, and thus the ability to protect against wear and fatigue, depends on the lubricants and additives, respectively. Our results indicate that wear protection not only relies on the reaction layer itself but also on the properties of the combined system of the reaction layer and an underlying tribomutation layer.

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Section: Introductionmentioning

confidence: 99%

“…As a result, direct contacts of individual asperities can lead to highly localized energy dissipation with microplastic deformation and temperatures (hot spots) up to 700-800 C [1]. The occurrence of such hot spots leads to surface smoothing by filling existing valleys with sintered reaction products [2].…”

Section: Introductionmentioning

confidence: 99%

Nanomechanical and analytical investigations of tribological layers for wear protection in slow-running roller bearings

Reichelt

Weirich

Richter

et al. 2006

Philosophical Magazine

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show abstract

“…A multilayer friction surface has been found in ferrous metals. Moreover, this surface is divided into several zones, one of these zones being the ªwhiteº layer, consisting of friction martensite as a result of high temperatures and shear stresses [3,4,6,7]. The conditions of crushing and dissolution of primary carbides, the distribution of alloying elements, the degree of c 6 a transformations, the character of the dislocation density change, etc., resulting from friction have been established [7 ± 10].…”

Section: Introductionmentioning

confidence: 99%

Structure of surface layers of metal matrix composites

Kalinichenko

Kezik

Bergmann

et al. 1999

Mat.-wiss. u. Werkstofftech.

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“…The roughness of the surfaces causes this heating to be localized near regions of actual contact and leads to the development of high local temperatures known as 'flash temperatures'. Tribologists have long been interested in the prediction of flash temperatures, not least because they can have a profound effect on the chemical and physical processes taking place at the interface, and hence on the coefficient of friction and the wear rate [1][2][3].…”

Section: Introductionmentioning

confidence: 99%