Experimental Investigation on the Tribo-Thermal Properties of Brake Friction Materials Containing Various Forms of Graphite: A Comparative Study

Manoharan, S.; Vijay, R.; Singaravelu, D. Lenin; Kchaou, Mohamed

doi:10.1007/s13369-018-3590-7

Cited by 71 publications

(73 citation statements)

References 25 publications

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“…Characterization of the developed brake pads 2.2.1. Physical, chemical and mechanical characterization of the developed brake pads The physical and mechanical properties of the developed brake pad composites were assessed by using industrial standards and the details are given in table 3 [21][22][23][24][25]. Table 1.…”

Section: 2mentioning

confidence: 99%

Investigation of Caryota urens fibers on physical, chemical, mechanical and tribological properties for brake pad applications

Krishnan¹,

Kumar²,

Babu

et al. 2019

Mater. Res. Express

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The idealization of this research work is to extend the utilization of the naturally available fibers as a key ingredient in the development of a non-asbestos free brake pad. The fibers used in this work are Caryota urens, which is found all over the Asian regions and abundantly available. The compression molding machine was used to develop the non-asbestos free brake pad. The fibers were added in weight percentages of 5, 10 and 15. The various physical, chemical, and mechanical properties were evaluated. Chase test rig was used to evaluate the tribological properties. The combination of Caryota urens fiber with the barytes had a more significant influence on the tribological properties. The brake pad composites with ten weight percent of Caryota urens fibers based brake pads possessed a good coefficient of friction values with less fade values and less fluctuations. Increasing the weight percentage of Caryota urens fibers in the brake pad formulation had a decreasing trend in the wear performance but increased recovery properties.

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Section: 2mentioning

confidence: 99%

Investigation of Caryota urens fibers on physical, chemical, mechanical and tribological properties for brake pad applications

Krishnan¹,

Kumar²,

Babu

et al. 2019

Mater. Res. Express

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show abstract

“…The development of copper-free friction materials in brake pads thus responds to the above demands. A lot of research or studies on possible ingredients for replacing copper in copper-free NAO friction materials such as organic fibers [13][14][15][16], non-copper metals [17][18][19], solid lubricants [20][21][22][23] and others [24][25][26] have been reported since then.…”

Section: Introductionmentioning

confidence: 99%

“…These carbonaceous components possess self-lubricating properties, are able to stabilize the coefficient of friction, reduce wear loss and reduce braking noise during the braking process [20][21][22][23][27][28][29][30][31][32][33][34]. Additionally, the high thermal conductivity of carbonaceous components can also accelerate the escaping of the friction heat [20][21][22][23]. With properties similar to those of copper, carbonaceous components may be a suitable replacement as raw materials for copper-free NAO.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies on the tribological performance of various graphite and other carbonaceous components in friction materials are reported [20][21][22][23][27][28][29][30][31][32][33][34]. Kolluri et al [27] compared the effect of both natural and synthetic graphite and their sizes on fade and recovery properties in friction materials.…”

Section: Introductionmentioning

confidence: 99%

“…Aranganathan et al [21,22,30] concluded that adding thermal graphite in friction materials showed good thermal properties, fade performance, wear resistance, and lubricity in their study and recommended that thermal graphite should be the replacement component for copper. Manoharan et al [23] compared three kinds of graphite, vein graphite, flake graphite and expandable graphite, as solid lubricants in brake materials and drew the conclusion that brake materials containing expandable graphite exhibited the best thermal stability with good fade and recovery performance among them. Ertan and Yavuz [31] investigated the role of solid lubricants (graphite, coke, and ZnS) on brake performance.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Carbonaceous Components on Tribological Properties of Copper-Free NAO Friction Material

et al. 2020

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Copper helps to accelerate heat transfer during the braking process, allowing the brake materials to produce a stable coefficient of friction (COF), which in turn reduces wear loss and braking noise. However, its properties are also quite harmful to aquatic organisms. Finding a suitable replacement that fits all functions of copper for brake materials is not an easy feat. In this paper, six different carbonaceous components (coke, carbon black, carbon fiber, artificial graphite, natural graphite and expanded graphite) were substituted for copper in non-asbestos organic (NAO) friction materials. The hardness, thermal conductivity and tribological behaviors of these copper-free NAO friction materials were examined. Experimental results indicate that carbonaceous components improve lubrication and assist the friction composites with generating friction layers on the worn surface. Specimens containing coke, carbon black or carbon fiber exhibit broken friction layers, whereas specimens containing artificial graphite, natural graphite or expanded graphite exhibit quite adherent and smooth friction layers. Among all the copper-free carbon containing specimens, the specimen containing expanded graphite appears to be the best choice. It has the highest thermal conductivity, a relatively low wear loss and a relatively high and stable COF.

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Friction‐wear performance in environmentally friendly brake composites: A comparison of two different test methods

et al. 2021

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In this study, an eco-friendly brake composite sample (EFP) was produced with 3.5% hazelnut shell dust as a natural additive material. Friction tests were performed on the manufactured pad sample and on a commercial pad (CP) using both a Chase-type test machine and a specially designed device. A different approach is presented with the evaluation of the two different test device results. The experimental results were compared using the Taguchi method and it was concluded that the braking performance of the sample with hazelnut shell dust was in accordance with international standards. As a result of the study; the nominal friction coefficient value was found to be 0.505 μ.

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Experimental Investigation on the Tribo-Thermal Properties of Brake Friction Materials Containing Various Forms of Graphite: A Comparative Study

Cited by 71 publications

References 25 publications

Investigation of Caryota urens fibers on physical, chemical, mechanical and tribological properties for brake pad applications

Investigation of Caryota urens fibers on physical, chemical, mechanical and tribological properties for brake pad applications

Effect of Carbonaceous Components on Tribological Properties of Copper-Free NAO Friction Material

Friction‐wear performance in environmentally friendly brake composites: A comparison of two different test methods

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