Seeds-induced synthesis of SiC by microwave heating

Wei, Shengnan; Guan, Li; Song, Bozhen; Fan, Bingbing; Zhao, Biao; Zhang, Rui

doi:10.1016/j.ceramint.2019.02.012

Cited by 23 publications

(21 citation statements)

References 27 publications

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“…Dielectric losses of Al 2 O 3 gradually improved and microwave absorbed by Al 2 O 3 was enhanced above 1200°C. Subsequently, the reflected power becomes lower and Al 2 O 3 particles as new hot spots continue heating throughout the sample 24,25 . The temperature keeps increasing and thermal accumulation occurs.…”

Section: Resultsmentioning

confidence: 99%

“…Subsequently, the reflected power becomes lower and Al 2 O 3 particles as new hot spots continue heating throughout the sample. 24,25 The temperature keeps increasing and thermal accumulation occurs. The reflected power gradually increases as increasing the input power during the first 26 minutes, and begins to decrease after 26 minutes, this may be due to the oxidation of SiC to SiO 2 .…”

Section: Characterizationmentioning

confidence: 99%

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Preparation of Al₂O₃‐mullite thermal insulation materials with AlF₃ and SiC as aids by microwave sintering

Fan

Zheng²,

Gao

et al. 2020

Int J Applied Ceramic Tech

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Al2O3‐mullite composites were prepared under the synergy effect of AlF3 and SiC aids by microwave heating. The phase composition, microstructure, porosity, flexural strength, thermal shock resistance, and thermal conductivity were investigated. The XRD results revealed that the content of mullite phase steadily increased with the increasing of AlF3 content. The microstructure showed that the lower content (≤1 wt%) of AlF3 led to the formation of granular mullite and the higher content (≥3 wt%) of AlF3 led to the formation of mullite whiskers, which could form an interlocking structure. In addition, the SiC hot spots can also promote the generation of mullite whiskers by microwave sintering. The thermal shock resistance was significantly improved by the interlocking structure of mullite whiskers. The residual rate of flexural strength of the composite with 3 wt% AlF3 was 86%. The composite with 3 wt% AlF3 additives got its optimized thermal conductivity from 30°C to 950°C, the value was between 0.819 and 1.021 W/(mK), which possess excellent thermal insulation performance.

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Section: Resultsmentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

Preparation of Al₂O₃‐mullite thermal insulation materials with AlF₃ and SiC as aids by microwave sintering

Fan

Zheng²,

Gao

et al. 2020

Int J Applied Ceramic Tech

Self Cite

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“…It can be synthesized by the direct reaction of Si and C (charcoal) powder under exposure to microwaves for 4 to 10 minutes at 1.0 kW power and an operating frequency of 2.45 GHz. [108] Here, it is remarkable to note that Si + C reaction took place at a temperature less than 1250 K under the microwave. Thus, Si is not acting as a susceptor to microwave as it is not melting during the progress of the reaction whereas charcoal acts as a susceptor due to the low melting phenomenon.…”

Section: Direct Reactionsmentioning

confidence: 90%

A Review on the Synthesis and Modification of Functional Inorganic‐Organic‐Hybrid Materials via Microwave‐Assisted Method

Atri

Tomar

2021

ChemistrySelect

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The microwave-assisted method is an appropriate route; to overcome the energy barrier for stabilizing perovskite structured based inorganic-organic-hybrid materials. The motivation for using the microwave-assisted method in material science as an effective heating technique results from improvement in the topochemical modification of layered perovskite oxides. The microwave-assisted method causes a fall in time duration from days to hours/minutes and produces good quality products with high crystallinity. Inorganic-organic-hybrids can be derived easily by the stepwise modification of layered perovskites. These modification techniques involve proton exchange, grafting, intercalation, and exfoliation steps. The microwave synthesized inorganic-organic-hybrid materials are in high demand due to their various interesting properties, potential catalytic, optical, composite, magnetic, and electronic, making them useful for technological applications.

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“…As an advanced sintering technology, microwave sintering plays a key role in the field of ceramics fabrication and it has attracted considerable attention in recent years [1][2][3][4]. However, the lack of insulation and microwave transparent materials with excellent thermal shock resistance and dielectric properties limits the high temperature (>1300°C) application [5].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and properties of Si2N2O ceramics for microwave sintering furnace

Fan

Zhang

et al. 2020

PAC

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The Si 2 N 2 O ceramics with low dielectric constant, low thermal diffusivity and high thermal shock resistance were successfully prepared by vacuum sintering. The amorphous Si 3 N 4 was used as raw material with Li 2 CO 3 as sintering additive. The phase, microstructure, oxidized resistance, mechanical and dielectric properties of the Si 2 N 2 O ceramics were investigated. XRD analysis showed that the suitable content of Li 2 CO 3 could promote the generation of Si 2 N 2 O ceramics. However, the excess or insufficient amount of Li 2 CO 3 additive would cause decomposition of Si 2 N 2 O phase. The Li 2 O volatilized at high temperature leaving highly pure (99.63%) porous Si 2 N 2 O ceramics. The flexural strength of the porous Si 2 N 2 O ceramics (with ≈49.19% of open porosity) was about 30 MPa, the residual strength ratio was more than 70% after 1300°C quenching in air. The SiO 2 layer formed by oxidization could prevent Si 2 N 2 O ceramics from further oxidizing. Therefore, these Si 2 N 2 O ceramics will be excellent thermal insulation and wave-transparent materials for high temperature microwave sintering furnace.

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Seeds-induced synthesis of SiC by microwave heating

Cited by 23 publications

References 27 publications

Preparation of Al₂O₃‐mullite thermal insulation materials with AlF₃ and SiC as aids by microwave sintering

Preparation of Al₂O₃‐mullite thermal insulation materials with AlF₃ and SiC as aids by microwave sintering

A Review on the Synthesis and Modification of Functional Inorganic‐Organic‐Hybrid Materials via Microwave‐Assisted Method

Fabrication and properties of Si2N2O ceramics for microwave sintering furnace

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Seeds-induced synthesis of SiC by microwave heating

Cited by 23 publications

References 27 publications

Preparation of Al2O3‐mullite thermal insulation materials with AlF3 and SiC as aids by microwave sintering

Preparation of Al2O3‐mullite thermal insulation materials with AlF3 and SiC as aids by microwave sintering

A Review on the Synthesis and Modification of Functional Inorganic‐Organic‐Hybrid Materials via Microwave‐Assisted Method

Fabrication and properties of Si2N2O ceramics for microwave sintering furnace

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Preparation of Al₂O₃‐mullite thermal insulation materials with AlF₃ and SiC as aids by microwave sintering

Preparation of Al₂O₃‐mullite thermal insulation materials with AlF₃ and SiC as aids by microwave sintering