Thermal Radiation Shielding and Mechanical Strengthening of Mullite Fiber/SiC Nanowire Aerogels Using In Situ Synthesized SiC Nanowires

Xu, Hui; Li, Xiaolei; Tong, Zongwei; Zhang, Baojie; Ji, Huiming

doi:10.3390/ma15103522

Cited by 9 publications

(3 citation statements)

References 56 publications

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“…19.8 0.5 1.9 0.9 0.8 1.9 0.4 0.6 0.7 1 The carbon was not included in the analysis due to equipment limitations. 2 The different sizes were added at equal mass ratios in the material C0_mix.…”

Section: Materials Productionmentioning

confidence: 99%

“…Silicon carbide (SiC) presents more than two hundred crystalline forms, many of these are rare in nature, but they can be artificially synthesized. Thanks to its interesting thermophysical and electrical properties, SiC has been highly used in thermal isolation materials, microelectronics, optoelectronics, and nuclear applications [1][2][3][4]. SiC particles are especially interesting for producing metal matrix composites; lightweight SiC particlereinforced aluminum (Al) composites have attracted attention in recent years for their excellent durability compared with cast iron in automotive brake discs [5].…”

Section: Introductionmentioning

confidence: 99%

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On the Efficient Particle Dispersion and Transfer in the Fabrication of SiC-Particle-Reinforced Aluminum Matrix Composite

Du,

Lattanzi,

Jarfors

et al. 2023

Crystals

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Lightweight SiC-particle-reinforced aluminum composites have the potential to replace cast iron in brake discs, especially for electric vehicles. This study investigates the effect of SiC particle size and matrix alloy composition on the resulting transfer efficiency and particle distribution. The performance of a specially designed stirring head was studied using a water model, and the stirring head conditions were assessed to understand the particle transfer and dispersion mechanisms in the molten aluminum. The standard practice of thermal pre-treatment promotes the wetting of the reinforcing particles and commonly causes clustering before the addition to the melt. This early clustering affects the transfer efficiency and particle dispersion, where their interaction with the melt top-surface oxide skin plays an important role. In addition, the transfer efficiency was linked to the particle size and the chemical composition of the matrix alloy. Smaller particles aggravated the degree of clustering, and the addition of rare earth elements as alloying elements in the matrix alloy affected the particle dispersion. The stirring parameters should be selected to ensure cluster disruption when the carbides are added to the melt.

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Section: Materials Productionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the Efficient Particle Dispersion and Transfer in the Fabrication of SiC-Particle-Reinforced Aluminum Matrix Composite

Du,

Lattanzi,

Jarfors

et al. 2023

Crystals

View full text Add to dashboard Cite

show abstract

“…SiC has excellent mechanical properties, chemical inertness, corrosion resistance and high-temperature oxidation resistance. It also exhibits attractive properties in the fields of optics, electricity and catalysis [1][2][3][4]. Therefore, it is widely used in electronic devices, semiconductors, catalysts, nuclear energy, space and other important fields.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Electromagnetic Wave Absorption Properties of N-Doped SiC Nanowires

Shi,

Liu,

Liu

et al. 2023

Materials

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Enhancing the conductivity loss of SiC nanowires through doping is beneficial for improving their electromagnetic wave absorption performance. In this work, N-doped SiC nanowires were synthesized using three different methods. The results indicate that a large amount of Si2ON will be generated during the microwave synthesis of SiC nanowires in a nitrogen atmosphere. In addition, the secondary heat-treatment of the as-synthesized SiC nanowires under nitrogen atmosphere will significantly reduce their stacking fault density. When ammonium chloride is introduced as a doped nitrogen source in the reaction raw material, the N-doped SiC nanowires with high-density stacking faults can be synthesized by microwave heating. Therefore, the polarization loss induced by faults and the conductivity loss caused by doping will synergistically enhance the dielectric and EMW absorption properties of SiC nanowires in the range of 2–18 GHz. When the filling ratio of N-doped SiC nanowires is 20 wt.%, the composite shows a minimum reflection loss of –22.2 dB@17.92 GHz, and an effective absorption (RL ≤ –10 dB) bandwidth of 4.24 GHz at the absorber layer thickness of 2.2 mm. Further, the N-doped SiC nanowires also exhibit enhanced high-temperature EMW absorption properties with increasing temperature.

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Emerging fabrication of ceramic nanofiber aerogel with the application in high-temperature thermal insulation, environment, and electromagnetic wave absorption

Gao,

Jiang,

et al. 2024

Colloid Polym Sci

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Thermal Radiation Shielding and Mechanical Strengthening of Mullite Fiber/SiC Nanowire Aerogels Using In Situ Synthesized SiC Nanowires

Cited by 9 publications

References 56 publications

On the Efficient Particle Dispersion and Transfer in the Fabrication of SiC-Particle-Reinforced Aluminum Matrix Composite

On the Efficient Particle Dispersion and Transfer in the Fabrication of SiC-Particle-Reinforced Aluminum Matrix Composite

Preparation and Electromagnetic Wave Absorption Properties of N-Doped SiC Nanowires

Emerging fabrication of ceramic nanofiber aerogel with the application in high-temperature thermal insulation, environment, and electromagnetic wave absorption

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