In-situ generation of graphene network in silicon carbide fibers: Role of iodine and carbon monoxide

AbstractIon-surface interactions are thought to play a role in bias enhanced nucleation of diamond. To explore this hypothesis and understand the mechanisms, surface studies of hydrogen and hydrocarbon ion interactions with silicon and silicon carbide have been performed. the experiments were carried out at room temperature and used in-situ auger analyses to monitor the surface composition of thin films produced or modified by the ions. Ion energies ranged from 10 to 2000 eV. Hydrogen ions were found to modify silicon carbide thin films by removing silicon and converting the resulting carbon-rich layers to a mixture of sp2- and sp3-C. the interaction of hydrocarbon ions with silicon was shown to produce a thin film containing SiC-, sp2-, and sp3-C species. IN general, the relative amount of each species formed was dependent upon ion energy, fluence, and mass. the results of these studies, interpreted in terms of chemical and energy transfer processes, provide key insights into the mechanisms of bias enhanced nucleation.

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Microstructure and Densification of Sintered (B+C)-Doped β-Silicon Carbide

MRS Proceedings ◽

10.1557/proc-327-269 ◽

1993 ◽

Vol 327 ◽

Cited By ~ 1

Author(s):

Wolfgang Braue ◽

Hans-J. Kleebe ◽

Carsten Wehling

Keyword(s):

Silicon Carbide ◽

Phase Transformation ◽

Surface Layer ◽

Preliminary Data ◽

Combined Approach ◽

Early Stages ◽

Α Phase ◽

Powder Particles

AbstractThe role of boron and carbon during densification of sintered β-SiC was investigated through the combined approach of in-situ dilatometry and CTEM/AEM inspection of TEM-foils referring to well-defined densification events. Preliminary data obtained indicate that in the early stages of densification, boron is not enriched in the continuous carbon-rich surface layer covering the β-SiC powder particles nor does it segregate to internal interfaces in high quantities. Small boron quantities are dissolved in the SiC grains- Simultaneously with the β- to α- phase transformation, decomposition of foam-like B4C aggregates releases small B4C particles, which are bound intragranularly to α-SiC.

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In-Situ Chemical Vapor Growth of Carbon-Rich Silicon Carbide Fibers Upon Pyrolysis of Polyzirconosilane

Silicon ◽

10.1007/s12633-015-9360-1 ◽

2016 ◽

Vol 10 (1) ◽

pp. 59-65 ◽

Cited By ~ 1

Author(s):

Mingcun Wang ◽

Chuanjin Huang ◽

Zhehui Wang

Keyword(s):

Silicon Carbide ◽

Chemical Vapor ◽

Vapor Growth ◽

Silicon Carbide Fibers

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IN SITU GENERATION AND CHEMICAL REACTIVITIES OF HRu(CO)4−RELEVANT TO THE REDUCTION OF CARBON MONOXIDE

Chemistry Letters ◽

10.1246/cl.1986.39 ◽

1986 ◽

Vol 15 (1) ◽

pp. 39-42 ◽

Cited By ~ 16

Author(s):

Masato Tanaka ◽

Toshiyasu Sakakura ◽

Teruyuki Hayashi ◽

Toshi-aki Kobayashi

Keyword(s):

Carbon Monoxide ◽

In Situ Generation

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In situ FTIR study of CO2 reduction on inorganic analogues of carbon monoxide dehydrogenase

Chemical Communications ◽

10.1039/d0cc07318k ◽

2021 ◽

Author(s):

Ji-Eun Lee ◽

Akira Yamaguchi ◽

Hideshi Ooka ◽

Tomohiro Kazami ◽

Masahiro Miyauchi ◽

...

Keyword(s):

Carbon Monoxide ◽

Critical Role ◽

Co2 Reduction ◽

Carbon Monoxide Dehydrogenase ◽

In Situ Ftir ◽

Ftir Study ◽

Ir Study

In situ electrochemical IR study of the CO2 reduction by inorganic analogues of carbon monoxide dehydrogenase (CODH) reveals the critical role of Ni in the activity and selectivity of Fe sulfides for CO2 reduction.

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