Properties of Aluminium-Ceramic Composite with Glassy Carbon as Solid Lubricant Designed for Automotive Applications / Właściwości Kompozytu Aluminiowo Ceramicznego Zawierajacego Węgiel Szklisty Jako Smar Stały Przeznaczonego Dla Motoryzacji

Posmyk, A.; Myalski, J.; Wistuba, H.

doi:10.1515/amm-2015-0416

Cited by 3 publications

(1 citation statement)

References 5 publications

(6 reference statements)

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“…The lubricant used most commonly is graphite. In places hard to access where the lubricant can not be applied, the composite structure is enriched with particles of graphite (GR) [11][12][13][14] or glassy carbon (Cg) [15][16][17][18]. As a result of this addition, when the composite is rubbing against a metal part, the effect of self-lubrication is triggered, reducing thereby the wear due to friction.…”

Section: Introductionmentioning

confidence: 99%

Effect of SiC and GR Reinforcement Particles on the Structure and Functional Properties of Composite Casting E43 MMC Reinforced with SiC Particles

Boczkal¹,

Dolata-Grosz²,

Nowak³

2016

Archives of Metallurgy and Materials

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The aim of the study was to describe the structure of composites based on the AlSi7Mg2Sr0.03 alloy matrix reinforced with SiC particles added in an amount of 10% and with a mixture of SiC and GR particles added in a total amount of 20%. Studies of the composite structure, were carried out by scanning electron microscopy (SEM). Based on the results of chemical analysis in microregions, an increased content of elements such as Mg, O and Si and of the precipitates was observed at the interface. In many places in the examined sample, GR particles formed partly disintegrated conglomerates with well developed boundaries. The effect of the content of particles of the reinforcing phase on the functional properties of the composite was investigated during studies of abrasion. The lowest mass loss of 5,33mg was obtained for the AlSi7Mg2Sr0.03 alloy reinforced with 10% SiC particles.

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Section: Introductionmentioning

confidence: 99%

Effect of SiC and GR Reinforcement Particles on the Structure and Functional Properties of Composite Casting E43 MMC Reinforced with SiC Particles

Boczkal¹,

Dolata-Grosz²,

Nowak³

2016

Archives of Metallurgy and Materials

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Materiały kompozytowe o osnowie stopu aluminium umacniane pianami ceramicznymi

Myalski

Hekner

2015

MATERIAL ENGINEERING

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The influence of glassy carbon on tribological properties in metal – ceramic composites with skeleton reinforcement

Myalski

Hekner

Posmyk

2015

Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT)

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This paper presents a results of mechanical and tribological properties of aluminum based composites with skeleton reinforcement. The aluminum alloy based composites were produced using pressure infiltration process. As a reinforcement ceramic foam with opened cells was applied. This reinforcement structure give an opportunity to limit the most common defects (like agglomeration, inhomogeneity, ect.) occurring in composite materials obtained by casting. In presented research three different types of porous foam were analysed. There were alumina foam covered by thin glassy carbon layer (Al2O3 – GC) and two types of glassy carbon foams (GC). Due to application of porous ceramic foam, an increasing of composite mechanical properties are expected. An additional glassy carbon layer with thickness up to 5 μm was applied for increasing a thermal conductivity and rapid heat dissipation from the material. Moreover, the skeleton structure of glassy carbon, and its wear mechanism, should decrease a friction coefficient value. Two manufactured types of composites: Al2O3 – GC foam and own produced glassy carbon foam were compared with material reinforced by spatial carbon structure obtained from commercial RVC (produced by Reynolds) foam. The results showed that the application of porous ceramic and ceramic – carbon reinforcement skeletons led to increasing of mechanical properties of composite. The conducted research using pin–on–disc method, with 2,5 MPa of load and 1,0 m/s of speed revealed that glassy carbon have significant influence on decreasing friction coefficient and wear rate. An analysis of material external layer in areas after coupling with pin (wear track) indicated a fragmentation of glassy carbon foam. The wear products are not remove from friction surfaces, but these products create thin carbon film with lubricant properties. The conducted research showed both, a possibility to produce composites with skeleton structure of reinforcement and a possibility of correction of material tribological properties using glassy carbon.

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Properties of Aluminium-Ceramic Composite with Glassy Carbon as Solid Lubricant Designed for Automotive Applications / Właściwości Kompozytu Aluminiowo Ceramicznego Zawierajacego Węgiel Szklisty Jako Smar Stały Przeznaczonego Dla Motoryzacji

Cited by 3 publications

References 5 publications

Effect of SiC and GR Reinforcement Particles on the Structure and Functional Properties of Composite Casting E43 MMC Reinforced with SiC Particles

Effect of SiC and GR Reinforcement Particles on the Structure and Functional Properties of Composite Casting E43 MMC Reinforced with SiC Particles

Materiały kompozytowe o osnowie stopu aluminium umacniane pianami ceramicznymi

The influence of glassy carbon on tribological properties in metal – ceramic composites with skeleton reinforcement

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