Journal
SCRIPTA MATERIALIA
Volume 174, Issue -, Pages 91-94Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.08.033
Keywords
Combustion synthesis; Spark plasma sintering; MgO/Graphene composites; LiF; Densification mechanism
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Funding
- National Key Research and Development Program of China [2017YFB0310400]
- National Natural Science Foundation of China [51432004, 51572268, 51702331]
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MgO/Graphene composites were prepared by combustion synthesis (CS) followed with spark plasma sintering (SPS) using LiF as sintering additive. The densification mechanism of MgO/Graphene composites doped with LiF was systematically investigated. With incorporating small amount of graphene into MgO, the spectral absorptivity of the composite was improved, whereas the density, hardness and average grain size were decreased. The densification of submicron sized MgO/Graphene ceramics was realized by the balance between sintering promoted by LiF and grain refinement of graphene. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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