Toughness control of boron carbide obtained by spark plasma sintering in nitrogen atmosphere

Petre Badica, Hanna Borodianska, Shumao Xie, Ting Zhao, Dmytro Demirskyi, Peifeng Li, Alfred I.Y. Tok, Yoshio Sakka, Oleg Vasylkiv

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Boron carbide ceramic was prepared by reactive Spark Plasma Sintering under N2-atmosphere and for different heating times and maximum pressure regimes. Split-Hopkinson Pressure Bar (SHPB), indentation, XRD and microscopy measurements were performed for samples characterization. It is shown that SHPB toughness control depending on SPS regime is possible and the main reason is introduction of nitrogen into B4C ceramic. Complex relationships between processing conditions, sintering mechanism, material's specifics, static and dynamic mechanical properties are discussed. Improvement of dynamic toughness is through mechanisms resembling those working for static load conditions such as cracks deflection and pull out, but there are also significant differences.

Original languageEnglish
Pages (from-to)3053-3061
Number of pages9
JournalCeramics International
Volume40
Issue number2
DOIs
Publication statusPublished - 2014 Mar
Externally publishedYes

Keywords

  • Boron carbide
  • C. Hardness
  • SHPB
  • SPS
  • Toughness

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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