Mechanical properties and XRD studies of silicon carbide inert matrix fuel fabricated by a low temperature polymer precursor route

Shih, Chun Kuang; Rohbeck, Nadia; Gopalakrishnan, Karthik; Tulenko, J.S.; Baney, Ronald H.

doi:10.1016/j.jnucmat.2012.07.010

Cited by 2 publications

(1 citation statement)

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“…The presence of the two graphene crystalline orientations indicates the different orientations of graphene surrounding the core nanoparticles. SiC is also detected, showing two characteristics peaks at 64 • and a peak centre at 35 • associated with the reflection of the crystal planes (111) and (220), respectively [25], indicating the crystal structure of SiC and the formation of the core by different orientations of SiC as reported by JCPDS (Card No: 29-1129 and 01-072-0018). In addition to these peaks for graphene and SiC, there is a slight presence of Si (111) at 28 • ; therefore, some negligible contamination of Si from the synthesis method could be possible, as the Raman spectra does not exhibit the characteristic peak of Silicon (Si-Si) typically at 520 cm −1 , which is a common standard within Raman measurements.…”

Section: Graphene@sic Capabilities As a High-power Supercapacitor Matmentioning

confidence: 58%

Graphene Encapsulated Silicon Carbide Nanocomposites for High and Low Power Energy Storage Applications

Martínez‐Periñán

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et al. 2017

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Abstract:In this paper, a graphene decorated SiC nanomaterial (graphene@SiC) fabricated via a facile adiabatic process was physicochemically characterised, then applied as a supercapacitor material and as an anode within a Li-ion battery (LIB). The reported graphene@SiC nanomaterial demonstrated excellent supercapacitative behaviour with a relatively high power density and specific capacitance of 4800 W·kg −1 and 394 F·g −1 , respectively. In terms of its capabilities as an anode within an LIB, the layered-graphene overwhelms the Li-intercalation, which is reflected in the obtained specific capacity of 150 mAh·g −1 , with a columbic efficiency of~99% (after 450 cycles) at a current of 100 mA·g −1 .

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Section: Graphene@sic Capabilities As a High-power Supercapacitor Matmentioning

confidence: 58%

Graphene Encapsulated Silicon Carbide Nanocomposites for High and Low Power Energy Storage Applications

Martínez‐Periñán

Foster

Down

et al. 2017

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Effect of Remnant Carbon and Etching of Particles on Pyrolysis Bonded Silicon Carbide (PBSC)

et al. 2022

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Silicon carbide (SiC) formed through pyrolysis of preceramic polymers loaded with SiC particles has gained significant attention for applications such as coatings, composite matrix modifications, and most importantly additive manufacturing. This work presents combined synchrotron XRD, Raman spectroscopy, scanning electron microscopy, nano-indentation, and Vickers indentation of pyrolysis bonded SiC to shed light on the changes of composition and mechanical properties of these materials. Characterization was performed on samples that were heat treated ranging from the synthesis 850 °C up to 1500 °C. Pre-treatments of the powders prior to pellet synthesis, such as heat treatment and etching using a hydrofluoric acid (HF), were investigated. It is shown that the degradation of mechanical properties when exposed to higher temperatures is due to the burnout of amorphous carbon clusters remnant of the pyrolysis process of the preceramic polymer. Furthermore, prior HF etching and removal of the native oxide layer of the powders showed improved density and hardness values in the final pellets. The average Vickers hardness of the control samples were 4.59 GPa and later 3.74 GPa when exposed to 1500 °C, while the samples synthesized using powders that were etched with HF had an average hardness value of 9.37 GPa and later 6.86 GPa when exposed to 1500 °C.

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Mechanical properties and XRD studies of silicon carbide inert matrix fuel fabricated by a low temperature polymer precursor route

Cited by 2 publications

References 40 publications

Graphene Encapsulated Silicon Carbide Nanocomposites for High and Low Power Energy Storage Applications

Graphene Encapsulated Silicon Carbide Nanocomposites for High and Low Power Energy Storage Applications

Effect of Remnant Carbon and Etching of Particles on Pyrolysis Bonded Silicon Carbide (PBSC)

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