Influence of copper on automotive brake performance

Barros, L.Y.; Poletto, Jean Carlos; Neis, Patric Daniel; Ferreira, Ney Francisco; Pereira, Carlos Henrique Selle

doi:10.1016/j.wear.2019.01.055

Cited by 36 publications

(14 citation statements)

References 21 publications

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“…Both Cu-free materials displayed a comparable friction coefficient and wear rate as the Cu-containing material. Barros et al [13] described a positive effect on the friction coefficient given by the decrease of copper content. However, the copper-free materials presented high wear rates.…”

Section: Introductionmentioning

confidence: 97%

Tribological and Emission Behavior of Novel Friction Materials

et al. 2020

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The tribological behavior and the related airborne particles emission of three copper-free automotive friction materials are investigated. The tests were conducted using a pin-on-disc tribometer equipped with a specifically designed clean-enclosure chamber for the emission measurement. Particle number concentration from particle size 0.3 µm up to 10 µm and the mass of emitted particles between 1 µm to 10 µm were measured. Particular emphasis was given to the chemical composition of the bulk materials, the friction layers and the emissions, in order to explain the acting wear mechanisms, and the recorded emission of airborne particles. The results indicate that the recorded emissions do not correlate with the friction coefficient and the wear rates, since the wear mechanisms exert a different influence on the tribological and emission behavior of the materials under study.

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Section: Introductionmentioning

confidence: 97%

Tribological and Emission Behavior of Novel Friction Materials

et al. 2020

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“…During braking, high temperatures cause the pad to slide (fade). Conductive materials such as copper, brass swarf, and steel wool are added to content to transfer the heat generated during braking [24][25][26]. Air-cooled discs are widely used in vehicles to quickly eliminate the temperature on the disc.…”

Section: Resultsmentioning

confidence: 99%

Investigation of the Use of a New Binder Material in Automotive Brake Pad

Sugözü

2020

International Journal of Automotive Science and Technology

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In this study, the usability of waste banana peel and banana tree bark with a fibrous structure as binders was investigated experimentally. Ac-cordingly, the amount of fiber, friction regulator, filler, abrasive and sol-id lubricant is fixed, and three different brake pad samples were pro-duced by adding 10% banana peel and 10% banana tree bark powders by reducing the amount of phenolic resin. Production was carried out by conventional dry mixing method and powder metallurgy method. For this, firstly a homogeneous mixture of all ingredients is provided. The mixture transferred to the mold was pressed at room temperature firstly. Samples obtained as the first form were subjected to hot pressing in the mold again. Thus, the ability of the resin to hold all the materials together has become active. Finally, the samples were cleaned and prepared for the tests. To examine the braking performance of the produced pads, a specially designed brake tester with brake disc was used. Friction, wear, density and hardness tests of the pads were made. SEM images of friction surfaces of pads were taken and microstructures were examined. The ef-fect of using banana waste as a binder in the brake pad on braking per-formance was evaluated. As a result, it was observed that banana wastes are alternative materials that can be used in brake pads.

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“…Additionally, it is not that the more alloying elements added, the mechanical properties are better. Figure 5 of the experimental study [27] shows the relationship between the copper content and the average coefficient of friction. At 100 • C, the increase of copper content from 0% (V0) to 10% (V10) did not lead to an obvious change of the friction coefficient.…”

Section: Alloy Processmentioning

confidence: 99%

“…The friction coefficient decreases significantly with the increase of copper content. In other words, the presence of copper leads to a reduction in the coefficient of friction [27]. Therefore, the combination of alloying elements and the proper ratio of the alloying elements are extremely important.…”

Section: Alloy Processmentioning

confidence: 99%

“…Small addition of the microalloying element niobium can refine the flake graphite in gray cast iron materials and improve material hardness, wedge pressure strength, and thermal cracking resistance. of copper leads to a reduction in the coefficient of friction [27]. Therefore, the combination of alloying elements and the proper ratio of the alloying elements are extremely important.…”

Section: Alloy Processmentioning

confidence: 99%

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Comprehensive Analysis on the Performance and Material of Automobile Brake Discs

Yang

Wang

et al. 2020

Metals

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This article reviews the current status of automotive brake disc research and the prospects for future research. At present, the research of brake disc performance mainly includes thermal conductivity, thermal fatigue resistance, wear resistance, and brake noise. It is found that a new alloy composite, heat treatment process, ceramic composite, new structure, and new materials are emerging. At the same time, it was found that ceramic and resin were used as the matrix, fiber materials were used as reinforcements to prepare brake discs, the addition of new fillers and the study of special reinforcement materials have become new hotspots in the study of brake discs. In the future development, carbon-fiber ceramic brake discs may become the main research focus of brake discs.

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Influence of copper on automotive brake performance

Cited by 36 publications

References 21 publications

Tribological and Emission Behavior of Novel Friction Materials

Tribological and Emission Behavior of Novel Friction Materials

Investigation of the Use of a New Binder Material in Automotive Brake Pad

Comprehensive Analysis on the Performance and Material of Automobile Brake Discs

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