SisiC — A Material for High Temperature Ceramic Heat Exchangers

Röttenbacher, R.; Willmann, G.

doi:10.1007/978-94-009-6424-2_13

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…There are several works in the literature concerning oxidation of SiC (sintered and CVD) and silicon; few of them consider the case of SiSiC by reactive silicon infiltration [6,12,[25][26][27]. There is a lack in studies on the effect of oxidation on macro porous materials in a flowing gas caused by combustion.…”

Section: Introductionmentioning

confidence: 99%

Early-stage oxidation behavior at high temperatures of SiSiC cellular architectures in a porous burner

Rezaei

Haussener

Gianella

et al. 2016

Ceramics International

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a b s t r a c tEarly stage oxidation behavior of SiSiC cellular lattices with different cell types was studied at 1400°C in two different environments: a porous burner and an electric furnace with stagnant air. Oxidation and silicon alloy bead formation were observed and identified as the most important factors affecting the integrity of the structures. Low melting temperature silicon-based alloys formed from the material due to presence of impurities. Having lower melting point than the thermal tests temperature, the beads exuded from the microstructure leaving pores in the substrate material and leading to enhanced oxidation on the surface. Moreover, it was observed that different lattice architectures lead to different oxidation behavior on the struts as a result of the changing gas flow paths inside each ceramic architecture.

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Section: Introductionmentioning

confidence: 99%

Early-stage oxidation behavior at high temperatures of SiSiC cellular architectures in a porous burner

Rezaei

Haussener

Gianella

et al. 2016

Ceramics International

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“…The composites were used as high temperature heat exchanger. 12 In addition, Gianella et al 13 fabricated SiC-Si composite via infiltration and studied high temperature application of the samples. Moon et al 14 produced SiC-Si functionally graded material with three-dimensional printing process.…”

Section: Introductionmentioning

confidence: 99%

A proposed model for spark plasma sintering of SiC-Si nanocomposite with different SiC particle sizes

Heydarian

Sajjadi

Johnsson

2020

Journal of Composite Materials

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In this study, the effect of SiC particle size on the sintering behavior of SiC-Si nano composites fabricated by spark plasma sintering (SPS) technique was investigated and a model was proposed, accordingly. To this purpose, SiC powders with three different particle sizes of 25 µm, 80 nm and 45 nm were chosen. It was expected that hardness of the composites increase with decreasing the SiC particle size; however, the outcomes were interesting and unpredictable. The composite with 80 nm SiC particles indicated the highest hardness. Hardness of the specimen with 25 µm SiC was low because of the large particle size of its reinforcement. While 80 and 45 nm SiC particles are considered as nano particles, the composite with 45 nm SiC particles showed lower hardness due to the growth of SiC powders during sintering according to a proposed model. Two reasons for the growth of 45 nm SiC particles were defined: (i) the fineness of the SiC particles prevented the Si particles to act as a binder between them thus, they agglomerated; (ii) SiC powders were oxidized during mixing procedure and a layer of SiO2 was formed on their surfaces. During sintering procedure, the reaction between SiC and SiO2 was happened and as a result SiO was formed. It caused vapor transportation during sintering leading to necking between particles and in turn, grain growth.

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Evaluation of durability of alumina, silicon carbide and siliconized silicon carbide foams as absorber materials for concentrated solar power applications

et al. 2022

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SisiC — A Material for High Temperature Ceramic Heat Exchangers

Cited by 3 publications

References 8 publications

Early-stage oxidation behavior at high temperatures of SiSiC cellular architectures in a porous burner

Early-stage oxidation behavior at high temperatures of SiSiC cellular architectures in a porous burner

A proposed model for spark plasma sintering of SiC-Si nanocomposite with different SiC particle sizes

Evaluation of durability of alumina, silicon carbide and siliconized silicon carbide foams as absorber materials for concentrated solar power applications

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