Enhancement of oxidation resistance of graphite foams by polymer derived-silicon carbide coating for concentrated solar power applications
作者： T. Kim , D. Singh , M. Singh
DOI: 10.1016/J.EGYPRO.2015.03.170
关键词: Polymer 、 Energy-dispersive X-ray spectroscopy 、 Composite material 、 Scanning electron microscope 、 Coating 、 Silicon carbide 、 Heat transfer 、 Materials science 、 Graphite 、 Thermal conductivity
摘要: Graphite foam with extremely high thermal conductivity has been investigated to enhance heat transfer of latent energy storage (LHTES) systems. However, the use graphite for elevated temperature applications (>600 °C) is limited due poor oxidation resistance graphite. In present study, coated silicon carbide (SiC) was investigated. A pre-ceramic polymer derived coating (PDC) method used form a SiC on foams. Post deposition, samples were analyzed by scanning electron microscopy and dispersive spectroscopy. The PDC-SiC quantified measuring weight at several points. experiments conducted under static argon atmosphere in furnace. After experiments, rates (%/hour) calculated predict lifetime experimental results showed that could prevent up 900 °C.
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