Silicon carbide foams produced by siliciding carbon foams derived from mixtures of mesophase pitch and nano-SiC particles

Yang, Yu; Guo, Quangui; Li, Sizhong; Zhao, Song; Shi, Jingli

doi:10.1016/j.msea.2007.11.034

Cited by 6 publications

(5 citation statements)

References 14 publications

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“…The artificial carbon foams for processing porous SiC ceramics by replication method involve resin-derived carbon foams [110], paper-derived carbon foams [111], and mesophase pitch [112,116]. SiC foams were produced by siliciding the carbon foams with Si vapor sources, such as Si 3 N 4 , vapor or liquid Si, and CH 3 SiCl 3 .…”

Section: Replica Methodsmentioning

confidence: 99%

Processing and properties of macroporous silicon carbide ceramics: A review

Eom

Kim

Raju

2013

Journal of Asian Ceramic Societies

341

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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Section: Replica Methodsmentioning

confidence: 99%

Processing and properties of macroporous silicon carbide ceramics: A review

Eom

Kim

Raju

2013

Journal of Asian Ceramic Societies

341

162

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“…Mesophase pitch (MP) based graphite foams of lightweight, high thermal conductivity and high surface area are promising candidates as heat sinks themselves or being infiltrated with phase change materials (PCMs) 1 – 4. However, the foams exhibit poor mechanical properties, which limit their applications in heat sinks 5 – 8. For example, it is difficult to machine and fix heat sink fins of one- or two-inch thickness out of the foams for microprocessors.…”

Section: Introductionmentioning

confidence: 99%

“…Mesocarbon microbeads (MCMBs), clays, nano-SiC particles, carbon blacks, etc. are good candidates for reinforcing the carbon foams 5 – 8. However, the poor tropism MCMBs and the low thermal conductivity materials like clays, nano-SiC particles and carbon blacks all could decrease the thermal conductivity of the foams 5 – 8.…”

Section: Introductionmentioning

confidence: 99%

“…are good candidates for reinforcing the carbon foams 5 – 8. However, the poor tropism MCMBs and the low thermal conductivity materials like clays, nano-SiC particles and carbon blacks all could decrease the thermal conductivity of the foams 5 – 8. Liquid infiltration and chemical vapour deposition were performed to form SiC coatings throughout the foams 8,10,11.…”

Section: Introductionmentioning

confidence: 99%

“…However, the poor tropism MCMBs and the low thermal conductivity materials like clays, nano-SiC particles and carbon blacks all could decrease the thermal conductivity of the foams 5 – 8. Liquid infiltration and chemical vapour deposition were performed to form SiC coatings throughout the foams 8,10,11. The coatings improved the bending strength of the foams greatly, but the coating processes were proved costly and having negative effects on thermal conductivity of the graphite foams 12…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and properties of ultrasonic assisted copper coated graphite foams

Song

Zhao

et al. 2013

Materials Science and Technology

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Mesophase pitch based graphite foams were electroplated with copper to obtain the improved mechanical and thermal properties and to extend their applications in heat sinks. A nickel interlayer was electroplated prior to copper to improve the wettability and bonding between copper and the graphite foams. An ultrasonic oscillation device and a rotary cathode were applied to enhance the mass transfer and to ensure the more even coatings throughout the foams from inside. Microstructure and properties of the copper coated foams were studied. Results indicated the copper coatings greatly improved the mechanical and thermal properties of the foams. With the prolonged timescale of plating, the foams possessed enhanced mechanical and thermal properties. After 16 min. of plating, the bending strength of the foams increased from 1·1 to 7·6 MPa, and the thermal conductivity of the foams reached 100·2 from 81·6 W m−1 K−1, while the porosity was reduced only by 4·2.

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Porous eco-ceramics of low thermal conductivity and high EMI shielding effectiveness from sawdust and sucrose by paste molding

Prabhakaran

2021

Ceramics International

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Silicon carbide foams produced by siliciding carbon foams derived from mixtures of mesophase pitch and nano-SiC particles

Cited by 6 publications

References 14 publications

Processing and properties of macroporous silicon carbide ceramics: A review

Processing and properties of macroporous silicon carbide ceramics: A review

Microstructure and properties of ultrasonic assisted copper coated graphite foams

Porous eco-ceramics of low thermal conductivity and high EMI shielding effectiveness from sawdust and sucrose by paste molding

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