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  • 文献标题:   Electrically conductive graphene nanoplatelet/boron carbide composites with high hardness and toughness
  • 文献类型:   Article
  • 作　　者:   TAN YQ, ZHANG HB, PENG SM
  • 作者关键词:   ceramic matrix composite, spark plasma sintering, electrical propertie, mechanical propertie, graphene nanoplatelet
  • 出版物名称:   SCRIPTA MATERIALIA
  • ISSN:   1359-6462
  • 通讯作者地址:   China Acad Engn Phys
  • 被引频次:   26
  • DOI:   10.1016/j.scriptamat.2015.12.008
  • 出版年:   2016

▎ 摘　　要

B4C composites containing 1-4 vol.% graphene nanoplatelet (GNP) were fabricated aiming at obtaining electrically conductive B4C composites with high toughness. The electrical conductivity of B4C composite was enhanced remarkably with the addition of only 2 vol.% GNPs. Besides, all the GNP/B4C composites maintained high Vickers hardness. The fracture toughness kept increasing with the increase of GNPs volume fraction and a high value of 5.26 MPa.m(1/2) was obtained in GNP/B4C composite with 4 vol.% GNPs. The main toughening mechanisms include GNPs pull-out, crack deflection and crack bridging. (C) 2015 Elsevier Ltd. All rights reserved.