Co-reinforcing of mullite-TiN-CNT composites with ZrB2 and TiB2 compounds

Orooji, Yasin; Alizadeh, As’ad; Ghasali, Ehsan; Derakhshandeh, Mohammad Reza; Alizadeh, Mohammad; Asl, Mehdi Shahedi; Ebadzadeh, Touradj

doi:10.1016/j.ceramint.2019.07.072

Cited by 152 publications

(28 citation statements)

References 41 publications

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“…Carbon nanotubes are known as superior heat conductors (k > 1500 W/mK [23]) and have been used to reinforce nanocomposites [24]. There are a number of literature reports that demonstrate the successful incorporation of nanotubes into mullite [25,26,27] alumina [28,29] at 1550°C and 1600°C, silicon nitride [30] at 1600°C, in silicon carbide [31] at 1800°C for 5 min, and TiN-based matrix [32]. One should however bear in mind that nanotubes might also react with the matrix at high sintering temperatures.…”

Section: Introductionmentioning

confidence: 99%

Reactive sintering of TiB2-SiC-CNT ceramics

Popov

Zhang

Huseynov³

et al. 2019

Ceramics International

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TiB2-SiC ceramics with multi-wall carbon nanotubes (MW-CNT) were reactively hot pressed at 1800°C and 30 MPa. Carbon nanotubes survived the process and could be clearly observed in the sintered ceramics. The in-situ exothermic reactions between TiC, B4C and Si accelerated the densification and produced nonporous TiB2-SiC ultrahigh-temperature ceramics within one minute at 1800 °C. Although the toughness of the ceramic was not significantly affected by the CNT addition, remaining around 6 MPa•m 1/2 , the CNT presence resulted in a substantial improvement in TiB2-SiC thermal shock resistance. The Vickers hardness decreased from 27GPa for the CNT-free matrix to 21GPa for ceramic with maximum CNT content (7.4 wt.%).

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Section: Introductionmentioning

confidence: 99%

Reactive sintering of TiB2-SiC-CNT ceramics

Popov

Zhang

Huseynov³

et al. 2019

Ceramics International

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“…Since their emergence, carbon nanotubes (CNTs) have been increasingly used for the fabrication of advanced composites as the ideal reinforcing agent owing to their rewarding mechanical properties such as fracture strain sustaining capability, light weight, large elastic strain, and high elastic modulus [18][19][20]. However, CNT-containing composite applications are accompanied by the high complexity because several factors such as the nanotube/matrix bonding, nanotubes dispersion, reinforcement aspect ratio, surface reactivity, and densification of bulk composites should be controlled [8,[21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Ni-Cu matrix composite reinforced with CNTs: preparation, characterization, wear and corrosion behavior, inhibitory effects

Heragh

Eskandarinezhad

Dehghan

2020

jcc

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St37 steel has been used in various industries due to its abundance and low cost. However, the high corrosion rate of steel in acidic environments is one of the limiting factors for its application. In this study, Ni-Cu composite coating reinforced with CNTs was applied on the st37 steel substrate. The extract of the Sarang Semut plant was added to the coating as inhibitory particles and the electrochemical behavior of the coating was investigated. The X-ray diffraction test was performed for phase analysis. Hardness, wear, and dynamic potential polarization tests were performed. Results showed that the presence of CNT particles improved the hardness, tribological performance, and electrochemical behavior of the coating. Also, the presence of Sarang Semut particles acted as a barrier and protected the surface of st37 steel from corrosion. It should be noted that these particles affected the kinetics and thermodynamics of corrosion reactions and were not involved in the reactions.

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“…Minimal size, low coolant requirements, high surface per volume ratio and improved heat transfer coefficient [2] are the outstanding benefits of MCHS that attracted many scientists and researchers in recent two decades. Nanofluids, nanocomposites and MCHS performance have been studied experimentally [3][4][5][6][7][8], numerically [2,7,[9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] and theoretically [24,25]. These numerous researches indicate that the conventional heat sinks have very low performance than MCHS.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the ferro-nanofluid flow in a porous ribbed microchannel heat sink: investigation of the first and second laws of thermodynamics with single-phase and two-phase approaches

Nguyen

Sedeh

Toghraie

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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In this study, the entropy generation of Fe 3 O 4-water nanofluid flow in the porous ribbed microchannel heat sink with two approaches is investigated. For modeling, the nanofluid flow inside of porous ribbed microchannel heat sink with two models is classified. The range of Reynolds number and porosity of ribbed blocks is 10 ≤ Re ≤ 80 and 0 ≤ ≤ 75 %. The effects of Reynolds number, porosity and compression between microchannel without any rib, microchannel with solid rib and microchannel with LTNE porous rib for two models are investigated. The highest value for the coefficient of heat transfer occurs in the maximum value of volume concentration of nanoparticles, Reynolds number and porosity percent. We realized that, in this investigation, the mixture model represents higher value than single-phase model except in the zero percent of volume fraction of nanoparticles. Also, we showed that the entropy generation increases by increasing the porosity value. Keywords The first and second law of thermodynamics • Nanofluid flow • Porous rib • Microchannel heat sink • Singlephase approach • Two-phase approach Greek symbols Density (kg m −3) Viscosity (kg m −3 s −1) Volume fraction of nanoparticles Permeability of porous media (m 2) Porosity percentage of porous rib Scripts nf Nanofluid np Nanoparticle p Particle m Mixture dr Drift bf Base fluid

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Co-reinforcing of mullite-TiN-CNT composites with ZrB2 and TiB2 compounds

Cited by 152 publications

References 41 publications

Reactive sintering of TiB2-SiC-CNT ceramics

Reactive sintering of TiB2-SiC-CNT ceramics

Ni-Cu matrix composite reinforced with CNTs: preparation, characterization, wear and corrosion behavior, inhibitory effects

Numerical simulation of the ferro-nanofluid flow in a porous ribbed microchannel heat sink: investigation of the first and second laws of thermodynamics with single-phase and two-phase approaches

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