Electrically conductive graphene nanoplatelet/boron carbide composites with high hardness and toughness. (15th March 2016)

• Record Type: Journal Article
• Authors: Tan, Yongqiang; Zhang, Haibin; Peng, Shuming
• Is Part Of: Scripta materialia. Volume 114(2016)
• Page Start: 98
• Page End: 102
• Publication Date: 2016-03-15
• Subjects: Ceramic matrix composites -- Spark plasma sintering -- Electrical properties -- Mechanical properties -- Graphene nanoplatelet; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.12.008
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: B4 C composites containing 1–4 vol.% graphene nanoplatelet (GNP) were fabricated aiming at obtaining electrically conductive B4 C composites with high toughness. The electrical conductivity of B4 C composite was enhanced remarkably with the addition of only 2 vol.% GNPs. Besides, all the GNP/B4 C 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/B4 C composite with 4 vol.% GNPs. The main toughening mechanisms include GNPs pull-out, crack deflection and crack bridging. Graphical abstract: