Synthesis of Si3N4 by the carbo-thermal reduction and nitridation of diatomite

Arik, Halil

doi:10.1016/s0955-2219(03)00038-4

Cited by 89 publications

(57 citation statements)

References 18 publications

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“…These results match our inference well that composited carbon with SBA-15 can lower the reaction temperature. It is noticed that well-crystallized Si 3 N 4 needed shorter soaking time (6 h) than that of previous carbothermal reduction-nitridation methods (16 h) [14]. In the present work, SBA-15 was used instead of traditional SiO 2 .…”

Section: Resultsmentioning

confidence: 92%

Synthesis of pure rod-like α-Si3N4 powder with in situ C/SBA-15 composite

Zhou¹,

Liu²,

Zhou³

2012

Ceramics International

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Section: Resultsmentioning

confidence: 92%

Synthesis of pure rod-like α-Si3N4 powder with in situ C/SBA-15 composite

Zhou¹,

Liu²,

Zhou³

2012

Ceramics International

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“…Examples of AlN and Si 3 N 4 material synthesis by means of CTRN process can be found in the literature [25][26][27][28][29][30]. The core-shell fillers used in our study were prepared according to the below described process which is schematically presented in Fig.…”

Section: Methodsmentioning

confidence: 99%

Functional composites with core–shell fillers: I. Particle synthesis and thermal conductivity measurements

Rybak

Gąska

2015

J Mater Sci

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Filled epoxy composites are broadly used in electronic and power devices as an electrical insulation. It is of importance to achieve efficient heat dissipation in such devices due to fact that thermal properties have a strong influence on their proper operation. For this reason, the modification of standard filler materials, such as silica or alumina, can give a promising solution. In this work, a novel core-shell material has been proposed and manufactured by means of a carbothermal reduction and nitridation process. The obtained fillers are made of a standard material which is covered by the high thermally conductive shell. The synthesized fillers were characterized by means of X-ray diffraction, and scanning electron microscopy coupled with elemental analysis. The composite samples based on epoxy resin filled with the manufactured coreshell fillers have been investigated in order to determine their effective thermal conductivity. The obtained composite samples exhibited a significant improvement in the thermal conductivity, represented by a 63 % relative increase. The obtained results show the potential for the novel core-shell fillers to be applied for the electrical insulation with the enhanced thermal conductivity.

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“…In particular, the fabrication of one dimensional nanowires, nanorods, and nanofibers of ceramics such as silicon nitride has been investigated intensively [5][6][7][8][9][10][11][12][13][14][15][16]. Silicon nitride has many attractive properties including high strength, hardness, and resistance to thermal shock and oxidation.…”

Section: Introductionmentioning

confidence: 99%

“…This was followed by a reduction process in a nitrogen atmosphere. A similar approach was taken by Arik [9]. Diatomite, used as the source of silica, and carbon black mixtures were subjected to the carbothermal reduction process in an atmosphere of nitrogen, thereby producing both alpha and beta silicon nitride fibrous products.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Silicon Nitride Nanofibers Synthesized Using Silica Nanopowders and Silica Gel

Deshmukh¹,

Jen²,

Santhanam³

2012

MSA

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Nanofibers of alpha silicon nitride were grown by a vapor-solid mechanism at 1450˚C, through the carbothermal reduction process. Two different precursor silica sources were used: silica nanopowders and silica gel. The effect of processing geometry, particularly the stacking orientations of the graphite substrates, silica pellets, and crucibles, on the density of nanofiber growth was also explored. The silicon nitride nanofibers appear with a predominantly rectangular cross section from silica nanopowder precursors and with a circular cross section for silica gel precursors. Silica gel precursors produce nanofiber products that are smaller in cross section but greater in length than the products from silica nanopowder precursors. The processing geometry must be suitably designed such that the vapor-solid mechanism that is responsible for the formation of the nanofibers is not disrupted.

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Synthesis of Si3N4 by the carbo-thermal reduction and nitridation of diatomite

Cited by 89 publications

References 18 publications

Synthesis of pure rod-like α-Si3N4 powder with in situ C/SBA-15 composite

Synthesis of pure rod-like α-Si3N4 powder with in situ C/SBA-15 composite

Functional composites with core–shell fillers: I. Particle synthesis and thermal conductivity measurements

Comparison of Silicon Nitride Nanofibers Synthesized Using Silica Nanopowders and Silica Gel

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