Analysis of the high-temperature flexural strength behavior of B4C–TaB2 eutectic composites produced by in situ spark plasma sintering

Dmytro Demirskyi, Oleg Vasylkiv

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

In this study, flexural strength measurements and microstructural studies have been combined to evaluate the effect of elevated temperatures on the fracture behavior of B4C–TaB2 ceramic composites that have a eutectic structure. Mechanical characterization was carried out at 1600 °C, 1800 °C and 2000 °C. The B4C–TaB2 eutectic composites were prepared in situ using a spark plasma sintering technique. The eutectic composites exhibited strengths of 483±17 MPa and 525±12 MPa at 1600 °C and 1800 °C, respectively, which is higher than the strength of 430±25 MPa measured at room temperature. The flexural strength of the B4C–TaB2 eutectic composites was 511±16 MPa at 2000 °C (i.e. 0.86 of the melting point of the B4C–TaB2 eutectic), indicating plastic behavior. Analyses of the high-temperature flexural strength behavior of this non-oxide eutectic are reported.

Original languageEnglish
Pages (from-to)71-78
Number of pages8
JournalMaterials Science and Engineering A
Volume697
DOIs
Publication statusPublished - 2017 Jun 14
Externally publishedYes

Keywords

  • Boron carbide
  • Eutectic composite
  • High-temperature strength
  • Spark plasma sintering
  • Tantalum diboride

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Analysis of the high-temperature flexural strength behavior of B<sub>4</sub>C–TaB<sub>2</sub> eutectic composites produced by in situ spark plasma sintering'. Together they form a unique fingerprint.

Cite this