Evaporation-condensation derived silicon carbide membrane from silicon carbide particles with different sizes

Li, Shuang; Wei, Chuncheng; Zhou, Lijuan; Wang, Peng; Xie, Zhihui

doi:10.1016/j.jeurceramsoc.2019.01.008

Cited by 44 publications

(10 citation statements)

References 23 publications

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“…Figure 6 shows that when the sintering temperature decreases, there is less microstructural coarsening, and the recrystallization of the SiC is not complete. In all the cases, it can be observed that the particles remained equiaxed as expected for SiC materials due to the stability of α-SiC at high temperatures [ 12 , 22 ].…”

Section: Resultsmentioning

confidence: 90%

“…According to this experimental activity, an optimized solid loading content was used for the slurry, having a humidity of 11.7 %. Defect-free and homogeneous tiles were produced using extrusion pressure of 30 bars [ 12 , 18 ].…”

Section: Resultsmentioning

confidence: 99%

“…Two different α-SiC powder batches were used, with a particle size between 20 and 35 µm for the coarse one and between 0.4 and 0.8 µm for the fine one; this different powder granulometry of the SiC powders is necessary in order to achieve the right recrystallization mechanism during sintering [ 12 , 13 ].…”

Section: Methodsmentioning

confidence: 99%

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High-Performance SiC–Based Solar Receivers for CSP: Component Manufacturing and Joining

et al. 2021

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Concentrated solar power (CSP) is an important option as a competitive, secure, and sustainable energy system. At the moment, cost-effective solutions are required for a wider-scale deployment of the CSP technology: in particular, the industrial exploitation of CSP has been so far hindered by limitations in the materials used for the central receiver—a key component in the system. In this context, the H2020 NEXTOWER project is focused on next-generation CSP technologies, particularly on advanced materials for high temperatures (e.g., >900 °C) and extreme applications environments (e.g., corrosive). The research activity described in this paper is focused on two industrial solutions for new SiC ceramic receivers for high thermal gradient continued operations: porous SiC and silicon-infiltrated silicon carbide ceramics (SiSiC). The new receivers should be mechanically tough and highly thermally conductive. This paper presents the activity related to the manufacturing of these components, their joining, and characterization.

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

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High-Performance SiC–Based Solar Receivers for CSP: Component Manufacturing and Joining

et al. 2021

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“…Extrusion is the most common method for producing complex geometries of near-net shape, as well as planar samples [ 22 , 23 ], and for this study, slabs of porous SiC with dimensions of 50 × 50 × 5 mm were produced by extrusion and partially sintered by LiqTech Ceramics A/S (Ballerup, Denmark). Two different α-SiC powder batches were combined, with a particle size between 20 and 35 µm for the coarse batch and between 0.4 to 0.8 µm for the fine batch; this bi-modal granulometry of the SiC powders is necessary in order to achieve the necessary recrystallization mechanism during sintering.…”

Section: Methodsmentioning

confidence: 99%

Characterization of Solar-Aged Porous Silicon Carbide for Concentrated Solar Power Receivers

Cañadas¹,

Candelario

Aloysio

et al. 2021

Materials

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Porous silicon carbide is a promising material for ceramic receivers in next-generation concentrated solar power receivers. To investigate its tolerance to thermal shock, accelerated ageing of large coupons (50 × 50 × 5 mm) was conducted in a solar furnace to investigate the effects of thermal cycling up to 1000 °C, with gradients of up to 22 °C/mm. Non-destructive characterization by computed X-ray tomography and ultrasonic inspection could detect cracking from thermal stresses, and this informed the preparation of valid specimens for thermophysical characterization. The effect of thermal ageing on transient thermal properties, as a function of temperature, was investigated by using the light-flash method. The thermophysical properties were affected by increasing the severity of the ageing conditions; thermal diffusivity decreased by up to 10% and specific heat by up to 5%.

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“…Porous silicon carbide (SiC) ceramics are promising materials in fields of filters for diesel particulate and molten metals, membrane and catalyst supports, heat exchangers, gas purifiers, high-temperature insulators and wave absorption materials [1][2][3][4][5][6][7][8][9][10] due to their low density, high corrosion resistance, good chemical stability, high thermal shock resistance, low coefficient of thermal expansion and high specific strength at both room and elevated temperatures [11][12][13][14][15]. However, the highly covalent character of Si-C bond makes it very difficult to be sintered.…”

Section: Introductionmentioning

confidence: 99%

Effects of Composite Sintering Additives: Al(OH)3+Y2O3+CaF2 on the Performance of Porous Mullite Oxide-Bonded SiC Ceramics

Chang

Liu

et al. 2021

Preprint

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A composite sintering additive system: Al(OH)3+Y2O3+CaF2 was proposed for porous mullite oxide-bonded SiC ceramics. Small variations of sintering additives have significant influences on the phase composition, pore shape/size, density and flexural strength. Samples sintered at 1550 ℃ for 4 h in the air atmosphere realized both good mullite densification and no detectable cristobalite phase, which was difficult to be achieved at the same time. Besides, the composite sintering additive system also promoted the formation of columnar shape mullite, which acts as a reinforcement. Flexural strength as high as 108 MPa was achieved at an apparent porosity of 40.3 vol%, which is higher than that sintered by SPS technique. Moreover, those additives also act as pore formers determining the shape and size of pores. Around 8.9 µm strip-like, 11.8 µm continuous channel-like and 4.1 µm irregular pores were obtained for Al(OH)3, Al(OH)3-Y2O3 and Al(OH)3-Y2O3-CaF2 added samples, respectively. Corresponding phase evolution, sintering mechanisms and pore formation models were established. This work provides a simple way to modify the phase, pore size/shape, and strength of mullite oxide-bonded porous SiC ceramics by properly selecting sintering additives without any additional pore formers.

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Evaporation-condensation derived silicon carbide membrane from silicon carbide particles with different sizes

Cited by 44 publications

References 23 publications

High-Performance SiC–Based Solar Receivers for CSP: Component Manufacturing and Joining

High-Performance SiC–Based Solar Receivers for CSP: Component Manufacturing and Joining

Characterization of Solar-Aged Porous Silicon Carbide for Concentrated Solar Power Receivers

Effects of Composite Sintering Additives: Al(OH)3+Y2O3+CaF2 on the Performance of Porous Mullite Oxide-Bonded SiC Ceramics

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