In-situ synthesis and densification of boron carbide and boron carbide-graphene nanoplatelet composite by reactive spark plasma sintering

Research output: Contribution to journalArticle

Authors

  • R. Alexander
  • T.S.R.C. Murthy
  • K. Vasanthakumar
  • N.S. Karthiselva
  • S.R. Bakshi
  • And 1 others
  • K. Dasgupta

Colleges, School and Institutes

External organisations

  • Bhabha Atomic Research Centre

Abstract

Simultaneous synthesis and densification of boron carbide and boron carbide- graphene nano platelets (GNP) were carried out by reactive spark plasma sintering of amorphous boron and graphene nano platelets at temperature ranging from 1200 to 1600 °C, pressure of 50 MPa and heating rate of 50 °C/min and 100 °C/min. X-ray diffraction and Raman spectroscopy confirmed the formation of required phases. Electron microscopic images revealed the formation of sub-micron and nano sized grains of plate like morphology. Sintered product with high relative density of 96%TD was achieved at a temperature of 1600 °C and heating rate of 50 °C/min for B4C stoichiometric composition and also exhibited maximum hardness of 21.10 GPa.

Details

Original languageEnglish
Pages (from-to)21132-21137
JournalCeramics International
Volume44
Issue number17
Early online date14 Aug 2018
Publication statusPublished - 1 Dec 2018