Effect of Graphite Content on the Tribological Behavior of a Cu-Fe-C Based Friction Material Sliding against FC30 Cast Iron

Chen, Sun-Zen; Lin, Jiin-Huey Chern; Ju, C.P.

doi:10.2320/matertrans.44.1225

Cited by 6 publications

(2 citation statements)

References 17 publications

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“…% C addition) significantly reduced friction coefficient. This experimental result is in good agreement with that given in the previous report [10,11], in which friction coefficient and wear rate decrease considerably with increasing graphite content. However, the Cu-Fe-C based friction materials sintered in air provide inverse effect of graphite addition, which causes increase of friction coefficient with increasing carbon content [12].…”

Section: Resultssupporting

confidence: 93%

Tribological Properties of PM Cu-Based Dry Friction Clutch

Prapai¹,

Morakotjinda

Yotkaew

et al. 2013

KEM

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Sintered Cu-based frictional materials were developed by using powder metallurgy (PM) method. The materials are aimed for application in a passenger car as a dry friction clutch. Effects of sintering temperature and composition on mechanical and tribological properties were determined. It was found that improper frictional material formulations caused inferior properties, particularly when the sintering temperatures were increased. Admixing of high Sn content (8 wt. %) resulted in decreases of sintered density and hardness with increasing sintering temperature. High Sn contents caused swelling of the sintered materials. Tribological properties (friction coefficient and wear rate) of the sintered specimens of the investigated materials were insensitive to sintering temperatures in the range of 800-950 °C but they were strongly influenced by chemical compositions. Addition of 3 wt. % graphite lowered the friction coefficient, which subsequently lowered the wear rate of the sintered material. To increase friction coefficient, one of the crucial properties of the dry friction clutch, of the sintered Cu-based frictional materials, two approaches were employed. In the first approach, substitution of graphite by SiO2 powders could improve the material friction coefficient. In the second approach, decreases of graphite content from 3 to 1 wt. % and of Sn content from 8 to 2 wt. % were conducted. The latter approach not only improved friction coefficient but also improved sintered density and hardness of the Cu-based frictional materials.

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Section: Resultssupporting

confidence: 93%

Tribological Properties of PM Cu-Based Dry Friction Clutch

Prapai¹,

Morakotjinda

Yotkaew

et al. 2013

KEM

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“…Therefore, the Cu-Fe-based friction materials have received more and more attention. In recent years, Cu-Febased friction materials with different ingredients, such as graphite, MoS 2 , SiO 2 and Al 2 O 3 , have been studied under different test conditions and have shown excellent tribological performances (Chen et al, 2003;Fu et al, 2010;Peng et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Effects of iron content on tribological properties of Cu-Fe-based friction material

Zheng

Liu

Zheng

et al. 2019

ILT

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Purpose The purpose of this study is to investigate the effect of iron content on the friction and wear performances of Cu–Fe-based friction materials under dry sliding friction and wear test condition. Design/methodology/approach Cu–Fe-based friction materials with different iron content were prepared by powder metallurgy route. The tribological properties of Cu–Fe-based friction materials against GCr15 steel balls were studied at different applied loads and sliding speeds. Meanwhile, microstructure and phases of Cu–Fe-based friction materials were investigated. Findings Cu–Fe-based friction materials with different iron content are suitable for specific applied load and sliding speed, respectively. Low iron content Cu–Fe-based friction material is suitable for a high load 60 N and low sliding speed 70 mm/min and high iron content Cu–Fe-based friction material will be more suitable for a high load 60 N and high sliding speed 150 mm/min. The abrasive wear is the main wear mechanism for two kinds of Cu–Fe-based friction materials. Originality/value The friction and wear properties of Cu–Fe-based friction materials with different iron content were determined at different applied loads and sliding speeds, providing a direction and theoretical basis for the future development of Cu–Fe-based friction materials.

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