Tribological study of Fe–Cu–Cr–graphite alloy and cast iron railway brake shoes by pin-on-disc technique

Ferrer, C.; Pascual, M.; Busquets, D.; Rayón, E.

doi:10.1016/j.wear.2009.12.014

Cited by 35 publications

(24 citation statements)

References 20 publications

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“…Reasonably accurate fits to the experimental data suggests that the functional form considered for apparent friction coefficient is adequate. It may be noted that these observations are in line with those made by Ferrer et al [4] using pin on disc experiments with discs extracted from locomotive wheel and pins extracted from the brake blocks. Fig.…”

Section: Resultssupporting

confidence: 91%

“…Experiments revealed that irrespective of graphite morphology used in brake shoes, friction coefficient decreased with increasing brake pressure and sliding velocity until it reached a critical value. Ferrer et al [4] conducted pin-on-disc experiments for gray cast iron and sintered brake blocks for different sliding velocities and brake pressures. Experiments showed that for a given brake pressure and sliding velocity, sintered brake shoes exhibit higher friction coefficient and wear than cast iron brake shoes.…”

Section: Introductionmentioning

confidence: 99%

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Performance analyses of brake blocks used by Indian Railways

Vakkalagadda

Srivastava

Mishra

et al. 2015

Wear

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Performance analyses of brake blocks used by Indian Railways

Vakkalagadda

Srivastava

Mishra

et al. 2015

Wear

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“…Tribological tests were carried out under a pin-on-disc configuration on a CETR UMT multi-specimen test system [14][15][16][17] as shown in Fig. 3a.…”

Section: Tribological Testmentioning

confidence: 99%

Tribological properties of magnetite precipitate from oxide scale in hot-rolled microalloyed steel

Jiang

Wei

et al. 2013

Wear

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Nano-magnetite (Fe3O4) particles have a potential to lead to the formation of lubrication tribofilm that reduces the friction and wear in hot steel strip rolling. In this paper, an attempt to fabricate the oxide film with magnetite precipitates from thermally-grown wustite (Fe1-xO) layer during isothermal cooling of low carbon microallyed steel, was obtained. The precipitation behaviors were investgated on Gleeble 3500 thermomechanical simulator under the humid air with water vaour content of 19.5 per vol percent. Several types of magnetite precipitates were examined using scanning electron microscope (SEM) with energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD) analysis. The tribological properties of magnetite precipitates were investigated in pin-on-disc configuration. It was found that the dispersed magnetite particles originate from either the pro-eutectoid precipitation above 570 degrees celcius or the partical decomposition of wustite below 570 degrees celcius. The oxide film on the presence of free particles durin g eutectoid precipitation could be a lubricant and consequently resist wear, particularly for the oxide scale with a typical thickness in the range of 8 to 11 um in dry ai and moisture atmosphere. Furthermore, characterisation and precipitation process of the oxide scale are discussed, with respect to a probable mechanism to explain the lubricated properties has been proposed. thermo-mechanical simulator under the humid air with water vapour content of 19.5 vol.%. Several types of magnetite precipitates were examined using scanning electron microscope (SEM) with energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD) analysis. The tribological properties of magnetite precipitates were investigated in pin-on-disc configuration. It found that the disperse magnetite particles originate from either the pro-eutectoid precipitation above 570C or the partial decomposition of wustite below 570C. The oxide film on the presence of free particles during eutectoid precipitation could be a lubricant and consequently resist wear, particularly for the oxide scale with a typical thickness in the range of 8 to 11μm in dry air and moisture atmosphere. Furthermore, characterisation and precipitation process of the oxide scale are discussed, with respect to a probable mechanism to explain the lubricated properties has been proposed.

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“…Over the last two decades, a polymer composite brake block has been developed to replace the cast iron brake block. The application of composite brake blocks has some advantages in that they reduce noise [2], have a low specific wear [3], and are lightweight. To avoid excessive wear on the wheel tread surface, the wheel material should be harder than the brake block material.…”

Section: Introductionmentioning

confidence: 99%