Trends in engine technology and tribology

Nakada, Masahiko

doi:10.1016/0301-679x(94)90056-6

Cited by 115 publications

(60 citation statements)

References 1 publication

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“…16 However, the use of nanofillers instead of the micronic ones allows a weight reduction in the aerospace systems, and it also leads to thinner protection layers with better ablative properties. 16 Studies show that mechanical, thermal and friction properties of phenolic-matrix/fiber com-posites can be improved by adding nanometric fillers such as carbon nanotubes, [17][18] layered silicates (nanoclays), 19 POSS compounds, 20 silica [21][22] or silicon carbide [23][24][25] to the phenolic resin. In the case of carbon-phenolic composites with nanoclays, studies show that higher nanoclay contents decrease the erosion rate, surface temperature and insulation index, 26 and can improve some properties, such as the flexural strength, stiffness and glass-transition temperature.…”

Section: Introductionmentioning

confidence: 99%

“…16 Literature also presents studies that examine the effect of montmorillonite nanoclays on the mechanical and morphological characteristics of the glassfiber-reinforced composites based on the novolac phenol-formaldehyde matrix, showing that a nanoclay addition enhances the mechanical properties when a strong matrix-fiber interface is observed. 11 The other interesting nanofiller is silicon carbide (nSiC) that is mostly used to improve the thermo-oxidative resistance 25 and wear resistance [23][24] of carbon/phenolic ablative materials. However, literature reports no studies involving carbon-and/or glass-fiber-fabric-laminated composites based on the nSiC-modified phenolic resin.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and tribological properties of nanofilled phenolic-matrix laminated composites

Pelin¹,

Stefan²,

Dincă³

et al. 2017

Mater. Tehnol.

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Phenolic-resin composites have attractive properties for applications in various fields from the wood and adhesive industry to the automotive, aeronautics and aerospace industries. The paper presents the obtaining of SiC-nanofilled phenolic-resin-based composites reinforced with a bidimensional fabric. Different contents of nanometric silicon carbide (0.5, 1 and 2) % mass fractions) were dispersed into the phenolic-resin matrix, using the ultrasonication method, to ensure the optimum dispersion. Several layers of the bidimensional fabric were impregnated with the obtained mixtures and the final laminated composites were obtained using high-temperature pressing, followed by a multistage temperature program. The obtained laminated nanocomposites were characterized with FTIR spectroscopy and evaluated in terms of mechanical and tribological properties. After mechanical testing, fracture cross-sections were characterized with SEM and optical microscopy. The results highlight the positive effect of the nanometric silicon-carbide addition to the phenolic-resin matrix of the laminated composites, in terms of mechanical and tribological performance, improving their strength, stiffness and abrasive properties. Keywords: laminated composites, tensile strength, flexural strength, nanometric silicon carbide, nanocomposites, friction coefficient Kompoziti fenolnih smol imajo mo`nosti raznovrstne uporabe na razli~nih podro~jih, tako na podro~ju lesne industrije, v industriji lepil, kot v avtomobilski in letalski industriji. Prispevek predstavlja pridobitev SiC fenolnih kompozitov na osnovi smole, oja~anih z bidimenzionalnimi vlakni. Razli~ne vsebine nanosilicijevega karbida (0,5, 1 in 2) % masnega odstotka, so bile razpr{ene z uporabo ultrazvo~ne metode v matrici, pridobljeni s smolo, da je bila zagotovljena optimalna disperzija. Ve~plasti bidimenzionalnih vlaken je bilo impregniranih s pridobljenimi me{anicami in kon~ni laminirani kompoziti so bili pridobljeni z visokotemperaturnim tla~nim pritiskanjem, kateremu je sledil ve~stopenjski temperaturni program. Pridobljeni laminirani kompoziti so bili preu~evani s FTIR-spektroskopijo in ovrednoteni glede na mehanske in tribolo{ke lastnosti. Presek zloma po mehanskem testiranju je bil preu~evan s SEM-mikroskopijo in opti~no mikroskopijo. Rezultati ka`ejo pozitiven u~inek dodatka nanometri~nih silicijevih karbidov, s smolo pridobljenih matric v ve~plastnih kompozitih, zaradi njihovih mehanskih in tribolo{kih lastnosti, in ker se tako izbolj{a mo~, togost in abrazivne lastnosti.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical and tribological properties of nanofilled phenolic-matrix laminated composites

Pelin¹,

Stefan²,

Dincă³

et al. 2017

Mater. Tehnol.

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“…About 50% of the frictional losses occur in the piston-cylinder assembly of internal combustion engine, out of which piston rings take a part of 70-80% of frictional losses [10][11][12][13][14]. It is concluded that in internal combustion engine, the piston ring is the most complicated tribological element, because huge amount of frictional losses comes from it [15].…”

Section: Introductionmentioning

confidence: 99%

Experimental Wear Study between Piston Ring and Cylinder Liner Pair using Jatropha Oil as Lubricating Oil

Rajan¹

2017

IJMPERD

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“…New trend in designing and manufacturing vehicle parts is based on replacing lubricating oils with solid lubricants embedded into the surface layers of engineering materials [3,4]. This enables to reduce friction resistance and the wear of sliding parts as well as to decrease the amount of lubricating oils used to ensure faultless sliding.…”

Section: Introductionmentioning

confidence: 99%

Glassy Carbon Coating Deposited on Hybrid Structure of Composite Materials

Posmyk

Myalski

Hekner

2016

Archives of Metallurgy and Materials

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This paper presents a method of production metal matrix composites with aluminum oxide foam covered by glassy carbon layer used as reinforcement. The glassy carbon coating was formed for decreasing of friction coefficient and reducing the wear. In first step of technology liquid glassy carbon precursor is on ceramic foam deposited, subsequently cured and carbonated at elevated temperature. In this way ceramic foam is covered with glassy carbon coating with thickness of 2-8 μm. It provides desirable amount of glassy carbon in the structure of the material. In the next step, porous spheres with carbon coating are infiltrated by liquid matrix of Al-Cu-Mg alloy. Thereby, equable distribution of glassy carbon in composite volume is achieved. Moreover, typical problems for composites reinforced by particles like sedimentation, agglomeration and clustering of particles are avoided. Tribological characteristics during friction in air versus cast iron as a counterpart were made. Produced composites with glassy carbon layer are characterised by friction coefficient between 0.08-0.20, thus meeting the typical conditions for solid lubricants.

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Trends in engine technology and tribology

Cited by 115 publications

References 1 publication

Mechanical and tribological properties of nanofilled phenolic-matrix laminated composites

Mechanical and tribological properties of nanofilled phenolic-matrix laminated composites

Experimental Wear Study between Piston Ring and Cylinder Liner Pair using Jatropha Oil as Lubricating Oil

Glassy Carbon Coating Deposited on Hybrid Structure of Composite Materials

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