Influence of submicron SiC particle addition on porosity and flexural strength of porous self-bonded silicon carbide

Kumar, B. Venkata Manoj; Lim, Kwang-Young; Kim, Young‐Wook

doi:10.1007/s12540-011-0621-2

Cited by 8 publications

(2 citation statements)

References 32 publications

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“…The common methods for preparing ceramic foams include freeze casting, solid-state sintering, direct foaming, template, gelcasting, reaction synthesis, etc. (Chen et al ., 2020; Scheffler and Colombo, 2005; Kumar et al ., 2011; Guo et al ., 2012; Cho et al ., 2019; Liu et al ., 2015b; Lee and Cho, 2012; Sepulveda et al ., 2015). Different from them, a characteristic process of molding and sintering was used to prepare the ceramic foam samples in this work.…”

Section: Experimental Methodsmentioning

confidence: 99%

Sound absorption performance of composite structures from a kind of lightweight ceramic foam with perforated plate

Liu,

Song,

Sun

2023

MMMS

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PurposeThe purpose of this paper is mainly to know: (1) the sound absorption coefficient of porous composite structures constituted by a new kind of lightweight ceramic foam and perforated plate; (2) the availability of an equivalent porous material model, recently proposed by the present author, to these composite structures in sound absorption.Design/methodology/approachA kind of lightweight ceramic foam with bulk density of 0.38–0.56 g·cm-3 was produced by means of molding, drying and sintering. The effect of stainless steel perforated plate on sound absorption performance of the ceramic foam was investigated by means of JTZB absorption tester.FindingsThe results indicate that the sound absorption performance could be obviously changed by adding the stainless steel perforated plate in front of the porous samples and the air gap in back of the porous samples. Adding the perforated plate to the porous sample with a relatively large pore size, the sound absorption performance could be evidently improved for the composite structure. When the air gap is added to the composite structure, the first absorption peak shifts to the lower frequency, and the sound absorption coefficient could increase in the low frequency range.Originality/valueBased on the equivalent porous material model and the “perforated plate with air gap” model, the sound absorption performance of the composite structures can be simulated conveniently to a great extent by using Johnson-Champoux-Allard model.

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Section: Experimental Methodsmentioning

confidence: 99%

Sound absorption performance of composite structures from a kind of lightweight ceramic foam with perforated plate

Liu,

Song,

Sun

2023

MMMS

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“…The introduction of porosity into silicon carbide (SiC) ceramics is an extremely versatile and powerful strategy for greatly extending the range of engineering properties offered by SiC ceramic components. The unique combinations of mechanical and thermo‐chemical properties of porous SiC ceramics (e.g., low thermal conductivity, high thermal shock resistance, good thermal stability, low thermal expansion coefficient, light weight, excellent mechanical strength, controlled permeability, excellent chemical stability, and good corrosion resistance) 1–12 make them promising materials for various industrial applications, such as filtration, 13–15 absorption, 16–19 membrane supports, 20–22 catalyst supports, 23,24 thermal insulators, 25–27 thermoelectric energy converters, 28 lightweight structural components, 29 and sandwich materials in dual‐coolant lead lithium blankets 30,31 …”

Section: Introductionmentioning

confidence: 99%

Electrical, thermal, and mechanical properties of porous silicon carbide ceramics with a boron carbide additive

Kultayeva

Kim

2022

Int J Applied Ceramic Tech

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The effects of the boron carbide (B4C) content and sintering atmosphere on the electrical, thermal, and mechanical properties of porous silicon carbide (SiC) ceramics were investigated in the porosity range of 58.3%–70.3%. The electrical resistivities of the nitrogen‐sintered porous SiC ceramics (∼10–1 Ω·cm) were two orders of magnitude lower than those of argon‐sintered porous SiC ceramics (∼101 Ω·cm). Both the thermal conductivities (3.3–19.8 W·m–1·K–1) and flexural strengths (8.1–32.9 MPa) of the argon‐ and nitrogen‐sintered porous SiC ceramics increased as the B4C content increased, owing to the decreased porosity and increased necking area between SiC grains. The electrical resistivity of the porous SiC ceramics was primarily controlled by the sintering atmosphere owing to the N‐doping from the nitrogen atmosphere, and secondarily by the B4C content, owing to the B‐doping from the B4C. In contrast, the thermal conductivity and flexural strength were dependent on both the porosity and necking area, as influenced by both the sintering atmosphere and B4C content. These results suggest that it is possible to decouple the electrical resistivity from the thermal conductivity by judicious selection of the B4C content and sintering atmosphere.

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Processing and properties of macroporous silicon carbide ceramics: A review

Eom

Kim

Raju

2013

Journal of Asian Ceramic Societies

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321

162

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Macroporous silicon carbide is widely used in various industrial applications including filtration for gas and water, absorption, catalyst supports, concentrated solar power, thermoelectric conversion, etc. During the past several years, many researchers have found diverse routes to fabricate macroporous SiC with porosity ranging from 9% to 95%. This review presents a detailed discussion on processing techniques such as partial sintering, replica, sacrificial template, direct foaming, and bonding techniques, as well as the mechanical and thermal properties of macroporous SiC ceramics fabricated using these methods. The full potential of these materials can only be achieved when properties are tailored for a specific application, whereas the control over these properties is highly dependent on the processing route. From the collected data, we have found that the porosity ranges from 9% to 91% with flexural strength of 1-205 MPa, compressive strength of 1-600 MPa, fracture toughness of 0.3-4.3 MPa m 1/2 , and thermal conductivity of 2-82 W/(m•K). This review will enlighten future investigations on processing of porous SiC and its usage in various applications.

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Influence of submicron SiC particle addition on porosity and flexural strength of porous self-bonded silicon carbide

Cited by 8 publications

References 32 publications

Sound absorption performance of composite structures from a kind of lightweight ceramic foam with perforated plate

Sound absorption performance of composite structures from a kind of lightweight ceramic foam with perforated plate

Electrical, thermal, and mechanical properties of porous silicon carbide ceramics with a boron carbide additive

Processing and properties of macroporous silicon carbide ceramics: A review

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