Effect of graphene platelets on tribological properties of boron carbide ceramic composites

Sedlák, Richard; Kovalčíková, Alexandra; Balko, Ján; Rutkowski, Paweł; Dubiel, Aleksandra; Zientara, Dariusz; Girman, Vladimír; Múdra, Erika; Dusza, Ján

doi:10.1016/j.ijrmhm.2016.11.015

Cited by 50 publications

(14 citation statements)

References 29 publications

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“…where B 4 C/6 wt.% GNPs composites tested in air reached maximum reductions on friction of 66% [13]. In contrast, lower GNPs additions (SiC5GNP and SiC10GNP) did not significantly modify the friction behaviour of SiC ceramics, showing similar µ ss values than those attained for SiC (0.16-0.19), which kept almost constant with the load.…”

Section: Resultsmentioning

confidence: 71%

Friction and wear behaviour of silicon carbide/graphene composites under isooctane lubrication

Llorente

Belmonte

2018

Journal of the European Ceramic Society

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The tribological performance of silicon carbide (SiC)/graphene nanoplatelets (GNPs) composites is analysed under oscillating sliding tests lubricated with isooctane, looking to explore their potential as components for gasoline direct injection (GDI) engines. High graphene filler contents (20 vol.% of GNPs) are required to substantially reduce the friction coefficient of SiC ceramics, attaining decreases on friction up to 30% independently of the applied load. For all materials and testing conditions a mild wear regime is evidenced. SiC/20 vol.% GNPs composite also enhances the wear resistance up to 35% at low load, but the addition of GNPs produces a deleterious effect as the load augments. The tribological behaviour depends on the formation and destabilization of a solid lubricant carbon-based tribofilm and strongly correlates with the mechanical properties of the tested materials.

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Section: Resultsmentioning

confidence: 71%

Friction and wear behaviour of silicon carbide/graphene composites under isooctane lubrication

Llorente

Belmonte

2018

Journal of the European Ceramic Society

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“…The third influencing factor is the temperature and oxide impurities. Sedlk et al showed that high-temperature hot pressing usually results in grain coarsening [107]. Asl et al mentioned that oxide impurities not only hinder densification but also promote grain growth [86].…”

Section: Fine-grained Strengtheningmentioning

confidence: 99%

Research on the interface properties and strengthening–toughening mechanism of nanocarbon-toughened ceramic matrix composites

Liu

Jiang

Shi

et al. 2020

Nanotechnology Reviews

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AbstractNanocarbon materials (carbon nanotubes, graphene, graphene oxide, reduced graphene oxide, etc.) are considered the ideal toughening phase of ceramic matrix composites because of their unique structures and excellent properties. The strengthening and toughening effect of nanocarbon is attributed to several factors, such as their dispersibility in the matrix, interfacial bonding state with the matrix, and structural alteration. In this paper, the development state of nanocarbon-toughened ceramic matrix composites is reviewed based on the preparation methods and basic properties of nanocarbon-reinforced ceramic matrix composites. The assessment is implemented in terms of the influence of the interface bonding condition on the basic properties of ceramic matrix composites and the methods used to improve the interface bonding. Furthermore, the strengthening and toughening mechanisms of nanocarbon-toughened ceramic matrix composites are considered. Moreover, the key problems and perspectives of research work relating to nanocarbon-toughened ceramic matrix composites are highlighted.

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“…Film transfer When a polyester composite slides over a counterface steel ring, without lubricants, if the adhesive bonds formed between composite and steel ring become stronger than the cohesive bond of the composite, some parts of the composites are transferred onto the steel ring forming a transfer film, another part of the composites is removed, forming wear debris. The transfer film can change the contact conditions between the counterpart and the surface, thus influencing the wear response and the magnitude of the wear rate [19,[38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55].…”

Section: Friction Stabilitymentioning

confidence: 99%

Effect of Graphene Oxide and Graphite on Dry Sliding Wear Behavior of Polyester Composites

Bastiurea¹,

Dima²,

Andrei³

2018

Mat.Plast.

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Graphene oxide and graphite filled polyester composites were prepared by using conventional melt-mixing methods in order to improve tribological performance of polyester. It was investigated friction stability, microhardness, friction coefficient, and specific wear rate of the composites in details. It was found that the presence of graphite and graphene oxide influenced friction coefficient and wear rate of the composites. Graphene oxide decreased wear rate with increasing of test speed and graphite decreased wear rate for composite for all speeds. Tribological performance of the polyester/graphene composites is mainly attributed to bigger thermal conductivity for graphene, which can easily dissipate the heat which appears during the friction process at bigger forces. The positive influence of graphite on coefficient of friction (COF) of the composites is the result of the clivage of graphite layers during the loadings due to van der Waals weak bonds between the graphite layers.

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Effect of graphene platelets on tribological properties of boron carbide ceramic composites

Cited by 50 publications

References 29 publications

Friction and wear behaviour of silicon carbide/graphene composites under isooctane lubrication

Friction and wear behaviour of silicon carbide/graphene composites under isooctane lubrication

Research on the interface properties and strengthening–toughening mechanism of nanocarbon-toughened ceramic matrix composites

Effect of Graphene Oxide and Graphite on Dry Sliding Wear Behavior of Polyester Composites

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