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Arisen Ni-Si compounds in the fabricated SiC-NWs/melamine-based carbon foam composites with ultralow thermal conductivty
Ist Teil von
Materials research express, 2019-06, Vol.6 (6), p.65608
Ort / Verlag
IOP Publishing
Erscheinungsjahr
2019
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
SiC-NWs/melamine-based carbon foam composites with ultralow thermal conductivity were fabricated via the chemical vaper infiltration with Ni catalysis. The SiC-NWs/MCF composites possessed a typical structure that the numerous SiC-NWs sprouted out from the porous skeletons of the MCF matrix to fill with MCFs' cells. Results indicated that there the β-SiC and the δ-Ni2Si existed in the SiC-NWs/MCF composites, where the β-SiC existed in form of the SiC-NWs and the δ-Ni2Si in the bulk morphology on the node. Meanwhile, it was demonstrated that growth of the SiC-NWs followed the Vapor-Liquid-Solid mechanism. Furthermore, it indicated that the composites foam of SiC-NWs/MCF possessed the ultralow thermal conductivity that they were only 36.1 mW m−1 K−1 (at 100 °C) and 55.5 mW m−1 K−1 (at 900 °C) respectively.