Tribological Behavior of Functional Surface: Models and Methods

Pawlus, Paweł; Dzierwa, Andrzej

doi:10.3390/coatings11030333

Cited by 1 publication

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“…It is well known that different surfaces reflect different tribological properties, the roughness having a significant influence on the level of friction under dry and lubricated conditions, conditions for the formation of a lubricant film, load capacity [17,18]. An important part of the experimental research related to the industrial application is the measurement and evaluation of the geometric structure of the surface of machine elements and tools [19][20][21][22]23].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Morphology, Microstructure, Stereometric and Tribological Properties of Al2O3 Surface Layers Produced Electrolytically with the Alternating Current Method in the Presence of Molybdenum Disulfide

et al. 2021

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Dry friction tests were performed using a pin-on-plate tribological tester. In this study, Al 2 O 3 and Al 2 O 3 with MoS 2 admixture plate with PEEK/BG pin. Plate surfaces were created using the constant current method and the non-periodic alternating current method. The dimension of Al 2 O 3 fibers walls were calculate based on SEM micrographs. SGP measurements of the oxide layers were made by a Taylor Hobson Talysurf 2D pin profilometer. It was found that the gradient structure favors the reduction of the friction coefficient and weight loss of PEEK/BG in the tested friction pairs, and the method of gradually reducing non-periodic alternating current allowed to obtain a more homogeneous microstructure of aluminum oxide. The use of high current densities at the beginning of the process leads to the production of non-gradient coatings characterized by higher SGP amplitude parameters. This property translates directly into higher wear of the sliding PEEK/BG material and higher values of the friction coefficients of the tribological pairs thus obtained. The research also identified a strong correlation between the friction coefficient µ and surface topography parameters before the tribological cooperation of PEEK/BG pairs -Al 2 O 3 oxide coating.

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