Journal of Materials Science

, Volume 43, Issue 10, pp 3569–3576

In situ boron carbide–titanium diboride composites prepared by mechanical milling and subsequent Spark Plasma Sintering

  • Dina V. Dudina
  • Dustin M. Hulbert
  • Dongtao Jiang
  • Cosan Unuvar
  • Sheldon J. Cytron
  • Amiya K. Mukherjee
Article

Abstract

Boron carbide–titanium diboride composites were synthesized and consolidated by Spark Plasma Sintering (SPS) of mechanically milled elemental powder mixtures. The phase and microstructure evolution of the composites during sintering in the 1,200–1,700 °C temperature range was studied. With increasing sintering temperature, the phase formation of the samples was completed well before full density was achieved. The distribution of titanium diboride in the sintered samples was significantly improved with increasing milling time of the Ti–B–C powder mixtures. A bulk composite material of nearly full density, fine uniform microstructure, and increased fracture toughness was obtained by SPS at 1,700 °C. The grain size of boron carbide and titanium diboride in this material was 5–7 and 1–2 μm, respectively.

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Dina V. Dudina
    • 1
  • Dustin M. Hulbert
    • 1
  • Dongtao Jiang
    • 1
  • Cosan Unuvar
    • 1
  • Sheldon J. Cytron
    • 2
  • Amiya K. Mukherjee
    • 1
  1. 1.Department of Chemical Engineering and Materials ScienceUniversity of California, DavisDavisUSA
  2. 2.U.S. Army Research Laboratory, Development and Engineering CenterPicatinnyUSA

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