The effect of SiC substrate microstructure and impurities on the phase formation in carbide-derived carbon

Ischenko, Vladislav; Jang, Yeon-Suk; Kormann, Martina; Greil, Peter; Popovska, N.; Zollfrank, Cordt; Woltersdorf, J.

doi:10.1016/j.carbon.2010.11.035

Cited by 11 publications

(9 citation statements)

References 23 publications

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“…This is in line with theoretical studies on the chlorination mechanism of silicon carbide published by others [7]. In combination with the advanced simulation model the values can be used to scale up technical reactor systems.…”

Section: Resultssupporting

confidence: 83%

“…For dissociative adsorption of the gaseous species chlorine the order is 2. This is in agreement with Ischenko et al who have proposed a possible mechanism for the chlorination of silicon carbide from DFT (density functional theory) calculations using a Si 10 C 9 model cluster [7]. 2.…”

Section: Regression Of a Rate Approach For The Initial Reaction Ratessupporting

confidence: 92%

“…by chlorination at elevated temperatures [2,[4][5][6][7][8][9]. by chlorination at elevated temperatures [2,[4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…CDCs are obtained from the removal of the metal from a carbide, e.g. by chlorination at elevated temperatures [2,[4][5][6][7][8][9]. During the reaction the metal is extracted selectively by the formation of stable metal chlorides resulting in a porous carbon.…”

Section: Introductionmentioning

confidence: 99%

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Recommendations for the Production of Silicon Carbide‐derived Carbon Based on Intrinsic Kinetic Data

et al. 2012

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Recommendations for mode of operation and critical dimensions regarding inner mass transfer limitation were deduced for the technical extraction of silicon from silicon carbide to produce nanoporous carbon (carbide-derived carbon, CDC). The recommendations are based on intrinsic kinetics derived from experimental data and reaction engineering simulation of the transient process (shrinking-core like mechanism). As the reaction takes place at 1000°C under chlorine atmosphere, kinetic data as well as diffusion coefficients are extracted from integral conversion data in a lab scale reactor. The reaction rate dependency for varying chlorine concentrations is represented best by a Hougen-Watson type rate approach with dissociative adsorption of a reactant. From the experimental data the effective diffusion coefficient of chlorine in the resulting nanoporous carbon could also be derived to 4 · 10 -8 m 2 s -1 at 1000°C.

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Section: Resultssupporting

confidence: 83%

Section: Regression Of a Rate Approach For The Initial Reaction Ratessupporting

confidence: 92%

“…by chlorination at elevated temperatures [2,[4][5][6][7][8][9]. by chlorination at elevated temperatures [2,[4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Recommendations for the Production of Silicon Carbide‐derived Carbon Based on Intrinsic Kinetic Data

et al. 2012

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“…Hexoloy SA is known to incorporate boron during manufacture as a sintering aid [30,31], although the boron is intended to diffuse into the lattice rather than remain, presumably in the form of boron carbide inclusions as seen in the Hexoloy SA micrographs. It is possible that these inclusions may have influenced the fracture path and/or fragmentation behaviour of the Hexoloy SA.…”

Section: Hexoloy Pore Analysismentioning

confidence: 99%

Understanding the ballistic event: methodology and initial observations

et al. 2016

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The purpose of the study is to accelerate the development of ceramic materials for armour applications by substantially increasing the information obtained from a high-energy projectile impact event. This has been achieved by modifying an existing test configuration to incorporate a block of ballistic gel, attached to the strike face of a ceramic armour system, to capture fragments generated during the ballistic event such that their final positions are maintained. Three different materials, representative of the major classes of ceramics for armour applications, alumina, silicon carbide, and boron carbide, have been tested using this system. Ring-on-ring biaxial disc testing has also been carried out on the same materials. Qualitative analysis of the fracture surfaces using scanning electron microscopy and surface roughness quantification, via stereo imaging, has shown that the fracture surfaces of biaxial fragments and ballistic fragments recovered from the edges of the tile are indistinguishable. Although the alumina and boron carbide fragments generated from areas closer to the point of impact were also similar, the silicon carbide fragments showed an increase in porosity with respect to the fragments from further away and from biaxial testing. This porosity was found to result from the loss of a boron-rich second phase, which was widespread elsewhere in the material, although the relevance of this to ballistic performance needs further investigation. The technique developed in this work will help facilitate such studies.

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Low Friction Carbide-Derived Carbon Coating on SiC in Vacuum Achieved by Microstructure Formulation and Solid–Liquid Lubrication

Liu

Guo

et al. 2014

Tribol Lett

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The effect of SiC substrate microstructure and impurities on the phase formation in carbide-derived carbon

Cited by 11 publications

References 23 publications

Recommendations for the Production of Silicon Carbide‐derived Carbon Based on Intrinsic Kinetic Data

Recommendations for the Production of Silicon Carbide‐derived Carbon Based on Intrinsic Kinetic Data

Understanding the ballistic event: methodology and initial observations

Low Friction Carbide-Derived Carbon Coating on SiC in Vacuum Achieved by Microstructure Formulation and Solid–Liquid Lubrication

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