Effects of different sintering methods on the properties of SiC-TiC, SiC-TiB 2 composites

Khodaei, Mahdi; Yaghobizadeh, Omid; Baharvandi, Hamid Reza; Dashti, Alireza

doi:10.1016/j.ijrmhm.2017.09.005

Cited by 63 publications

(22 citation statements)

References 41 publications

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“…The literature reports the combination of SiC and TiC in a composite structure to produce materials with higher relative density and improved mechanical properties (fracture toughness, Vickers hardness), thermal and electrical conductivity [34][35][36][37][38][39][40][41][42][43][44]. These properties are required for the absorber material as it will endure extreme operating conditions.…”

Section: Introductionmentioning

confidence: 99%

SiC-TiC nanocomposite for bulk solar absorbers applications: Effect of density and surface roughness on the optical properties

Aréna

Coulibaly

Soum‐Glaude

et al. 2019

Solar Energy Materials and Solar Cells

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In this study, the potential of SiC-TiC nano-composites as solar absorbers has been studied. For solar thermal applications, materials with high solar absorptance and low emittance are ideally sought for (spectral selectivity). A semi-molecular sol-gel synthesis route leading to nanometric homogenous composites was described. The resulting SiC-TiC nanocomposite powder was sintered at different temperatures to produce samples with various relative densities (from 57 to 96 %). The samples morphology and composition were characterised by several techniques including Scanning Electron Microscopy (SEM), Energy-Dispersive X-Ray Spectroscopy (EDX), X-Ray Diffraction (XRD), carbon and oxygen elemental analyses. The link between the surface roughness and the relative density was precised and the effects on the optical properties (0.25 to 25 µm wavelength range) were studied. Comparisons were made with pure SiC and pure TiC samples with various relative densities.Overall, the sample emittance was found to strongly decrease with the increase in the relative density, leading to a great increase in the spectral selectivity, despite a little decrease in the solar absorptance. The TiC-SiC composite has an intermediate reflectance compared to the pure SiC and the pure TiC samples. With an absorptance of 0.76, an emittance of 0.44 and a selectivity of 1.74, the denser SiC-TiC could be a good candidate for bulk solar applications.

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Section: Introductionmentioning

confidence: 99%

SiC-TiC nanocomposite for bulk solar absorbers applications: Effect of density and surface roughness on the optical properties

Aréna

Coulibaly

Soum‐Glaude

et al. 2019

Solar Energy Materials and Solar Cells

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“…Although the relative density of C5 composite was very low to be 70%, indicating that C5 composite was not suitable for mechanical testing. The continuous decrease in relative density was owing to the higher content of SiC which inhibits the densification of composites because of the strong covalent bond of SiC . It has been known that Ti 3 SiC 2 ceramic could be densified at the low temperature of 1500°C .…”

Section: Resultsmentioning

confidence: 99%

Synthesis, microstructure, and mechanical properties of TiC‐SiC‐Ti₃SiC₂ composites prepared by in situ reactive hot pressing

Liao

Xu²,

Jin³

et al. 2020

Int J Applied Ceramic Tech

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In this work, TiC‐SiC‐Ti3SiC2 composites were synthesized by in situ reactive hot pressing using β‐SiC, graphite, and TiH2 powders as initial materials. Microstructure and mechanical properties of as‐prepared dense composites were systematically investigated. It was found that by increasing the initial SiC content the final SiC content in the composites increased in contrast to the decrease in TiC and Ti3SiC2 contents. In the dense composites, TiC and Ti3SiC2 grains exhibited transgranular fracture, whereas SiC particles showed intergranular fracture. The composite containing 77 vol.% TiC, 4 vol.% SiC, and 19 vol.% Ti3SiC2 had the highest flexural strength of 706.6 MPa. The composite consisting of 44 vol.% TiC, 49 vol.% SiC, and 7 vol.% Ti3SiC2 exhibited the highest Vickers hardness of 22.3 GPa and the highest fracture toughness of 6.0 MPa·m1/2.

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“…Titanium carbide (TiC) is an important ceramic material [1][2][3] with high hardness, good chemical corrosion resistance, high melting point, good high temperature stability, good corrosion resistance and acceptable thermal conductivity. TiC has potential applications in many fields, such as aerospace, cutting tools, nuclear reactors and so on [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Carbon reduction of Ti3AlC2 phase for TiC nanosheet production

Bian

Dai

Zhang

et al. 2021

Journal of Asian Ceramic Societies

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In this study, we investigated the formation of TiC nanosheets from carbon black and Ti3AlC2 mixtures in NaCl-KCl eutectic salt. The effects of raw material ratio, molten salt ratio, and heating temperature on TiC formation were studied in detail. Results show that carbon black may enhance the decomposition of amounts of Ti3AlC2 at 1,100°C by heat treatment without salt addition, while molten salt plays key roles in the total decomposition of Ti3AlC2 and the formation of TiC nanosheets at 1,000°C. Higher heating temperature and excess carbon black benefits the synthesis of high content TiC. The as-synthesized TiC nanosheets are approximately 15 nm thick and 80-220 nm long. We propose a possible reaction mechanism that governs TiC formation in molten salts and explain the observations based on kinetic considerations.

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Effects of different sintering methods on the properties of SiC-TiC, SiC-TiB 2 composites

Cited by 63 publications

References 41 publications

SiC-TiC nanocomposite for bulk solar absorbers applications: Effect of density and surface roughness on the optical properties

SiC-TiC nanocomposite for bulk solar absorbers applications: Effect of density and surface roughness on the optical properties

Synthesis, microstructure, and mechanical properties of TiC‐SiC‐Ti₃SiC₂ composites prepared by in situ reactive hot pressing

Carbon reduction of Ti3AlC2 phase for TiC nanosheet production

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Effects of different sintering methods on the properties of SiC-TiC, SiC-TiB 2 composites

Cited by 63 publications

References 41 publications

SiC-TiC nanocomposite for bulk solar absorbers applications: Effect of density and surface roughness on the optical properties

SiC-TiC nanocomposite for bulk solar absorbers applications: Effect of density and surface roughness on the optical properties

Synthesis, microstructure, and mechanical properties of TiC‐SiC‐Ti3SiC2 composites prepared by in situ reactive hot pressing

Carbon reduction of Ti3AlC2 phase for TiC nanosheet production

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Synthesis, microstructure, and mechanical properties of TiC‐SiC‐Ti₃SiC₂ composites prepared by in situ reactive hot pressing