Electrically conducting graphene/SiC(111) composite coatings by laser chemical vapor deposition

Xu, Qifeng; Deng, Zhao; Sun, Qiming; Tu, Rong; Zhang, Song; Yang, Meijun; Li, Qizhong; Zhang, Lianmeng; Goto, Takashi; Ohmori, Hitoshi

doi:10.1016/j.carbon.2018.06.038

Cited by 22 publications

(9 citation statements)

References 56 publications

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“…The TEM image of the PyC/SiC interface exhibits an intimate contact between PyC and SiC, as shown in Figure h. In general, good connection at the heterogeneous interface favors interface scattering and polarization loss of incident EMWs. , A typical TEM image (Figure i) of the SiC matrix shows many grain boundaries between SiC nanocrystals, further confirming the presence of rich structural defects within PIP-produced SiC …”

Section: Resultsmentioning

confidence: 72%

“…49,63 A typical TEM image (Figure 3i) of the SiC matrix shows many grain boundaries between SiC nanocrystals, further confirming the presence of rich structural defects within PIP-produced SiC. 64 Mechanical Properties, Electrical Conductivity, Thermal Stability, and Corrosion Resistance. Sufficient mechanical properties of the multifunctional composite materials are of great significance for aerospace and military industries where high-strength hosting structures capable of providing effective mechanical support and/or enduring external force impact are required.…”

Section: Resultsmentioning

confidence: 81%

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High-Performance Multifunctional Carbon–Silicon Carbide Composites with Strengthened Reduced Graphene Oxide

Feng

Zhang

et al. 2021

ACS Nano

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Materials with low density, exceptional thermal and corrosion resistance, and ultrahigh mechanical and electromagnetic interference (EMI) shielding performance are urgently demanded for aerospace and military industries. Efficient design of materials’ components and microstructures is crucial yet remains highly challenging for achieving the above requirements. Herein, a strengthened reduced graphene oxide (SrGO)-reinforced multi-interfacial carbon–silicon carbide (C-SiC) n matrix (SrGO/(C-SiC) n ) composite is reported, which is fabricated by depositing a carbon-strengthening layer into rGO foam followed by alternate filling of pyrocarbon (PyC) and silicon carbide (SiC) via a precursor infiltration pyrolysis (PIP) method. By increasing the number of alternate PIP sequences (n = 1, 3 and 12), the mechanical, electrical, and EMI shielding properties of SrGO/(C-SiC) n composites are significantly increased. The optimal composite exhibits excellent conductivity of 8.52 S·cm–1 and powerful average EMI shielding effectiveness (SE) of 70.2 dB over a broad bandwidth of 32 GHz, covering the entire X-, Ku-, K-, and Ka-bands. The excellent EMI SE benefits from the massive conduction loss in highly conductive SrGO skeletons and polarization relaxation of rich heterogeneous PyC/SiC interfaces. Our composite features low density down to 1.60 g·cm–3 and displays robust compressive properties (up to 163.8 MPa in strength), owing to the uniformly distributed heterogeneous interfaces capable of consuming great fracture energy upon loadings. Moreover, ultrahigh thermostructural stability (up to 2100 °C in Ar) and super corrosion resistance (no strength degradation after long-term acid and alkali immersion) are also discovered. These excellent comprehensive properties, along with ease of low-cost and scalable production, could potentially promote the practical applications of the SrGO/(C-SiC) n composite in the near future.

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Section: Resultsmentioning

confidence: 72%

Section: Resultsmentioning

confidence: 81%

High-Performance Multifunctional Carbon–Silicon Carbide Composites with Strengthened Reduced Graphene Oxide

Feng

Zhang

et al. 2021

ACS Nano

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“…The result of the selected area diffraction was verified to be β ‐SiC fibers because the β crystal phase was in a simple cubic structure. Previous scholars [16] indicated that the crystal lattice spacing was approximately 0.26 nm. The result in Figure 12b matches the result of that study.…”

Section: Resultsmentioning

confidence: 92%

Preparation and Characterization of SiC Fibers from PCS by Electrospinning, Curing and Calcination Process**

Yuan

et al. 2021

ChemistrySelect

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Silicon carbide (SiC) possesses unique properties and is widely applied in household and military uses. This study explored the manufacturing process of SiC fibers. In the experiment, polycarbosilane (PCS) was dissolved in a mixed solvent of C8H10 and dimethylformamide (DMF) to form a solution, and electrospinning was employed to synthesize PCS fibers. PCS fibers underwent a curing process and a 2 h calcination at 1200 °C in N2 atmosphere to convert PCS fibers into β‐SiC fibers. The solute recruitment, solvent mixing ratio, and voltage in the experiment were defined as process parameters through which to examine the influence each parameter had on electrospinning. The PCS fibers were discovered to exhibit the most even size under the following condition: PCS recruitment of 1.0 g/mL, DMF constituting 30 % of the solvent volume, voltage of 25 kV, spraying speed of 1.0 mL/h, and spinning distance of 15 cm. Under microscopy, the diameter of each PCS fiber was determined to be 1.0 μm, and the diameter of each β‐SiC fiber was 0.8 μm.

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“…The result of the selected area diffraction was veri ed to be β-SiC bers because the β crystal phase was in a simple cubic structure. Previous scholars [12] indicated that the crystal lattice spacing was approximately 0.26 nm. The result in Fig.…”

Section: Sem Analysis Of Sic Bersmentioning

confidence: 92%

Application of Electrospinning to SiC Fiber Synthesis

Hu¹,

Dai²,

Wu³

et al. 2020

Preprint

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Silicon carbide (SiC) possesses unique properties and is widely applied in household and military uses. This study explored the manufacturing process of SiC fibers. In the experiment, polycarbosilane (PCS) was dissolved in a mixed solvent of C8H10 and dimethylformamide (DMF) to form a solution, and electrospinning was employed to synthesize PCS fibers. PCS fibers underwent a curing process and a 2-h calcination at 1200°C in N2 atmosphere to convert PCS fibers into β-SiC fibers. The solute recruitment, solvent mixing ratio, and voltage in the experiment were defined as process parameters through which to examine the influence each parameter had on electrospinning. The PCS fibers were discovered to exhibit the most even size under the following condition: PCS recruitment of 1.0 g/ml, DMF constituting 30% of the solvent volume, voltage of 25 kV, spraying speed of 1.0 ml/h, and spinning distance of 15 cm. Under electron microscopy, the diameter of each PCS fiber was determined to be 1.0 μm, and the diameter of each β-SiC fiber was 0.8 μm.

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Electrically conducting graphene/SiC(111) composite coatings by laser chemical vapor deposition

Cited by 22 publications

References 56 publications

High-Performance Multifunctional Carbon–Silicon Carbide Composites with Strengthened Reduced Graphene Oxide

High-Performance Multifunctional Carbon–Silicon Carbide Composites with Strengthened Reduced Graphene Oxide

Preparation and Characterization of SiC Fibers from PCS by Electrospinning, Curing and Calcination Process**

Application of Electrospinning to SiC Fiber Synthesis

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