Effects of silicon carbide in semi-metallic brake materials on friction performance and friction layer formation

Matějka, Vlastimil; Lu, Yonglai; Fan, Yanli; Kratošová, Gabriela; Lešková, Jana

doi:10.1016/j.wear.2008.03.006

Cited by 37 publications

(18 citation statements)

References 19 publications

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“…During braking tests, hard SiC asperities would be inserted into the soft carbon matrix more easily and deeply. These SiC particles that were imbedded into friction films can actively participate in increasing the COF and keeping its value stable at higher temperatures, as reported elsewhere 17 . But loose and mobile SiC particles would cause friction instability and wear increase.…”

supporting

confidence: 58%

“…The better stability and bond of friction film with the composite surface for C/SiC C improved the wear resistance further. In addition, the imbedded SiC particles in film were fixed on the friction surface, but the SiC particles becoming part of mixture of loosed debris were mobile, which would cause abrasion of friction surfaces, as reported elsewhere 17 . So, the wear rates of C/SiC A and B were bigger.…”

mentioning

confidence: 55%

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Effects of Graphitization Degree in Three‐Dimensional Needled C/SiC Composites on Tribological Properties

Cai

Fan

Yin

et al. 2011

Int J Applied Ceramic Tech

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Three-dimensional needled carbon/carbon (C/C) preforms were achieved after one cycle of polymer infiltration and pyrolysis (PIP). Phenolic resin or the mixture of phenolic resin and 30 wt% graphite was used as the carbon precursor. Carbon/ silicon carbide (C/SiC) composites were prepared by liquid silicon infiltrating into the C/C preforms with or without hightemperature treatment (HTT). The graphitization degree of C/C preforms was improved by HTT or graphite addition, the improvement being more outstanding by the latter, which influenced phase compositions as well as distribution and facilitated the formation of friction films for the resulting C/SiC composites. The friction studies show that higher the graphitization degree, lower the wear rate and higher the coefficient of friction as well as more stable the friction curve, with a lower sensitivity of friction and wear to the velocity-pressure conditions being due to the differences in the topography and stability of friction films.

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confidence: 58%

mentioning

confidence: 55%

Effects of Graphitization Degree in Three‐Dimensional Needled C/SiC Composites on Tribological Properties

Cai

Fan

Yin

et al. 2011

Int J Applied Ceramic Tech

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“…It was reported that there was an optimal alumina content for the best friction and wear behavior. One study focused on the effects of the silicon carbide content on the friction and wear properties of semimetallic friction materials [23]. They found that SiC improves the friction coefficient at high temperatures and suggested that the fragmentation of SiC particles during sliding plays important roles in the friction and wear of the friction couple.…”

Section: Introductionmentioning

confidence: 99%

Morphology and Toughness of Abrasive Particles and Their Effects on the Friction and Wear of Friction Materials: A Case Study with Zircon and Quartz

et al. 2009

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This study examined the friction and wear of brake friction materials containing two different abrasives: zircon and quartz. Commercial grade abrasives with two different sizes (fine and coarse) were compared in terms of the effects of the size, shape, and toughness of the abrasive particles on the friction and wear of the friction material and counter discs. The results showed that the morphology of the abrasives has a considerable effect on the friction effectiveness and wear of the friction couple. The level of friction was higher in the case of using quartz than zircon, and smaller particles were more effective in increasing the coefficient of friction. The toughness of the abrasives also played important roles in determining the friction effectiveness. Improved heat resistance at elevated temperatures was achieved when coarse zircon was used. The wear of the friction material was also dependent on the morphology and toughness of the abrasives and the large abrasive particles produced more wear on the gray iron disc.

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“…Ma et al [8] studied the effect of ZrSiO 4 (zirconium silicate or zircon) used as abrasives on friction performance of non-metallic brake friction materials and revealed that ZrSiO 4 helped to enhance friction coefficient, but depressed the wear rate. Matějka et al [9] investigated the effect of SiC on the friction and wear properties of semi-metallic friction composites, and found that SiC played a key role in enhancing friction coefficient, but led to higher abrasion of rotor. When the content of abrasives reaches to a certain value, negative effect may be appeared, which is harmful to couple plate, and causes brake noise or judder of clutch.…”

Section: Introductionmentioning

confidence: 99%

Effects of NBR Particle Size on Performance of Carbon Fiber–Reinforced Paper-Based Friction Material

Fei

Luo

et al. 2015

Tribology Transactions

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2015): Effects of NBR particle size on performance of carbon fiber reinforced paper-based friction material, Tribology Transactions, AbstractIn the present work, three different sized nitrile-butadiene rubber (NBR) particles were used to modify carbon fiber reinforced paper-based friction material (CFRPF). The effects of NBR particle size on performance of CFRPF were studied. The microstructure and properties of the samples were investigated by scanning electron microscopy, thermal analyzer, and wet friction performance tester. Experimental results indicated that there were four stages in the thermal degradation of NBR modified CFRPF. NBR particle size had great effect on the first degradation stage (100-300℃). The highest friction coefficient was obtained with sample containing the finest NBR particles. The wear rate of the friction materials decreased with the increase of NBR particle size. But NBR particle size had little influence on the wear rate of the couple plate. The sample containing coarse NBR particles showed excellent friction stability under oil lubricated conditions.

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Effects of silicon carbide in semi-metallic brake materials on friction performance and friction layer formation

Cited by 37 publications

References 19 publications

Effects of Graphitization Degree in Three‐Dimensional Needled C/SiC Composites on Tribological Properties

Effects of Graphitization Degree in Three‐Dimensional Needled C/SiC Composites on Tribological Properties

Morphology and Toughness of Abrasive Particles and Their Effects on the Friction and Wear of Friction Materials: A Case Study with Zircon and Quartz

Effects of NBR Particle Size on Performance of Carbon Fiber–Reinforced Paper-Based Friction Material

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