Copper-free brake-pads: A break-through by selection of the right kind of stainless steel particles

Kalel, Navnath; Bhatt, Bhaskar; Darpe, Ashish K.; Bijwe, Jayashree

doi:10.1016/j.wear.2020.203537

Cited by 20 publications

(10 citation statements)

References 25 publications

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“…Cu-based brake pad [606], full-carbon/ ceramic braking pairs [607], and the P/M pad mated with C/C-SiC disc [608] for high speed trains were tested separately, and compared under same test conditions [609]. The cupper-free brake materials used in automobiles were also extensively tested for replacing traditional cupper-containing brake materials [610][611][612][613]. The airborne brake wear particulate emission problem was paid much attention [614][615][616].…”

Section: Brake and Friction Materialsmentioning

confidence: 99%

A review of advances in tribology in 2020–2021

Meng

et al. 2022

Friction

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Around 1,000 peer-reviewed papers were selected from 3,450 articles published during 2020–2021, and reviewed as the representative advances in tribology research worldwide. The survey highlights the development in lubrication, wear and surface engineering, biotribology, high temperature tribology, and computational tribology, providing a show window of the achievements of recent fundamental and application researches in the field of tribology.

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Section: Brake and Friction Materialsmentioning

confidence: 99%

A review of advances in tribology in 2020–2021

Meng

et al. 2022

Friction

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“…In addition, it has been determined that using copper in friction materials poses a risk to aquatic life. By 2025, copper should only make up 0.5% of friction materials, from 0.5% to 5% in 2020 (Antonyraj et al , 2022; Kalel et al , 2021).…”

Section: Introductionmentioning

confidence: 99%

Effect of limestone usage on tribological properties in copper and asbestos-free brake friction materials

Yavuz¹

2023

ILT

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Purpose This study aims to determine the braking performance of limestone as a filler in brake friction materials. Design/methodology/approach Samples containing limestone material (30-35-40%), which can be an alternative to brake friction material filler, were produced. The samples were weighed on precision scales, mixed homogeneously and produced using the hot molding method. The physical and tribological properties of the produced samples were determined, and their microscopic analyzes were made with scanning electron microscopy. Findings As the amount of limestone increased, the density of the samples decreased. The friction coefficient and wear rates were close to each other and within the optimum limits for all samples. Limestone materials can be used instead of barite materials studied in the literature on brake linings. Microcracks were observed only in samples containing 30% and 35% limestone in microscopic images. Originality/value In this study, the wear rate, coefficient of friction and microstructures on the friction surfaces of brake friction materials containing limestone were investigated. The usability of limestone as a filler in brake friction materials provides valuable information to researchers and industrial organizations in the brake friction material field.

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“…Improved wear resistance and friction performance were obtained for composites with nanosized potassium titanate. Efforts are continuously made to replace Cu in the formulations [27][28][29]. For example, Bhatt et al [30] studied the effect of hydrated calcium silicate on NVH performance in Cu-free formulations and indicated the positive effect of this component on most of the tribological properties of prepared samples.…”

Section: Introductionmentioning

confidence: 99%

The Role of Graphitic Carbon Nitride in the Formulation of Copper-Free Friction Composites Designed for Automotive Brake Pads

Matějka

Leonardi

Praus

et al. 2022

Metals

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In this study, graphitic carbon nitride (g-C3N4, labelled as gCN) was tested in the formulation of copper-free (Cu-free) friction mixtures, which are potentially interesting for brake pad manufacturing. Three formulations of friction composites were prepared starting from a common Cu-free master batch: (i) without graphite, (ii) with graphite and (iii) with gCN. The mixtures were pressed in the form of pins by hot-press moulding. The friction-wear performance of the prepared pins was investigated using a pin-on-disc (PoD) test at room temperature (RT), high temperature (HT) (400 °C) and, again, at room temperature (H-RT). The values of the friction coefficient (µ) for the composites with gCN (or graphite) were as follows: (i) RT test, µRT = 0.52 (0.47); (ii) HT test, µHT = 0.37 (0.37); (iii) RT after the HT tests, µH-RT = 0.49 (0.39). With respect to wear resistance, the samples with graphite performed better than the samples without this solid lubricant. To the best of our knowledge, this is the first report regarding the evaluation of the role of gCN in friction composites designed for automotive brake lining applications. The results indicate the main role of gCN as a soft abrasive.

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Copper-free brake-pads: A break-through by selection of the right kind of stainless steel particles

Cited by 20 publications

References 25 publications

A review of advances in tribology in 2020–2021

A review of advances in tribology in 2020–2021

Effect of limestone usage on tribological properties in copper and asbestos-free brake friction materials

The Role of Graphitic Carbon Nitride in the Formulation of Copper-Free Friction Composites Designed for Automotive Brake Pads

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