Development and evaluation of TiB2–AlN ceramic composites sintered by spark plasma

Luiz Antônio F. Júnior, Ítalo V. Tomaz, Michel P. Oliveira, Larissa Simão, Sérgio N. Monteiro

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Titanium diboride (TiB2) is a ceramic material with high mechanical resistance, chemical stability, and hardness at high temperatures. Sintering this material requires high temperatures and long sintering times. Non-conventional sintering techniques such as spark plasma sintering (SPS) can densify materials considered difficult to sinter. In this study, TiB2–AIN (aluminum nitride) composites were sintered by using the SPS technique at different sintering temperatures (1500 °C, 1600 °C, 1700 °C, 1800 °C, and 1900 °C). x-ray diffraction was used to identify the phases in the composites. mechanical properties such as hardness and indentation fracture toughness was obtained using a vickers indenter. Different toughening mechanisms were identified, and good densification results were obtained using shorter times and lower temperatures than those previously reported.

Original languageEnglish
Pages (from-to)18718-18723
Number of pages6
JournalCeramics International
Volume42
Issue number16
DOIs
Publication statusPublished - 01 Dec 2016
Externally publishedYes

Keywords

  • Ceramics
  • Composite
  • Densification
  • Sintering

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