In-situ construction of oxidation resistant porous Mo4.8Si3C0.6/SiC(rGO) composite PDCs served as thermal insulation components of hypersonic vehicles

Zhu, Yeqi; Jin, Chao; Ning, Zhonghao; Huang, Wenyan; Mao, Shengjian; Xue, Zhichao; Lan, Siqi; Tao, Qianwen; Yao, Rongqian

doi:10.1016/j.ceramint.2023.09.053

Cited by 4 publications

(2 citation statements)

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“…SiOC and SiC ceramic nanofiber sponges are expected to possess favorable compressive properties. Figure summarizes the compressive test results for these two types of PDC fibers. , Figure a–c illustrates the remarkable compressive properties of SiOC ceramic fibers. SiOC ceramic nanofibers could endure compressive strains of up to 60% after 4 cycles, indicating their excellent elasticity and resilience.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, the temperature difference between the upper and lower surfaces of ordinary cotton was about 250 °C. It was clear that PDC fibers exhibited excellent thermal insulation properties, , which can be attributed to the outstanding performance, highly porosity, and thermal stabilization of PDC nanofibers. Due to the decrease of the pore size in the needle-punched nanofiber sample and the decrease of the fluidity of the airflow, the conductivity of the PDC nanofiber product is reduced, which makes the PDC nanofibers obtained by solution blow spinning an ideal choice for high-temperature insulation scenarios.…”

Section: Resultsmentioning

confidence: 99%

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Mass Production of Polymer-Derived Ceramic Nanofibers through Solution Blow Spinning: Implications for Flexible Thermal Insulation and Protection

Zhang,

Li,

Chen

et al. 2023

ACS Appl. Nano Mater.

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Despite their outstanding properties, commercial massive production of polymer-derived ceramic nanofibers with high performances still faces challenging issues related to material synthesis and spinning processes. Herein, solution blow spinning technology was employed to improve the spinning ratio of nanofibers. Spinnable solutions were prepared with different precursors, polysiloxane, and polycarbosilane. Notably, these organic precursor solutions can be blow-spun into nanofibers with elevated rates, ranging from 10 to 50 mL•h −1 . After being pyrolyzed, the organic precursor nanofibers can be pyrolyzed to form SiOC or SiC nanofibers. Simultaneously, employing a needlepunching technique for structural rearrangement allowed organic precursor sponges to be converted into blankets with customized thicknesses and shapes. The above strategy enabled the production of SiOC and SiC nanofiber products characterized by exceptional thermal insulation [0.028/0.026 (W•(m•K) −1 )], high-temperature resistance (1300 °C), and compression resistance properties (ε = 60%). It can be widely used in aerospace, energy, and electronic technology and other fields.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%