Densification improvement of spark plasma sintered TiB2-based composites with micron-, submicron- and nano-sized SiC particulates

Zohre Ahmadi, Behzad Nayebi, Mehdi Shahedi Asl*, Iman Farahbakhsh, Zohre Balak

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

103 Citations (Scopus)

Abstract

Taguchi design of experiments methodology was used to determine the most influential spark plasma sintering (SPS) parameters on densification of TiB2–SiC ceramic composites. In this case, four processing factors (SPS temperature, soaking time, applied external pressure and SiC particle size) at three levels were examined in order to acquire the optimum conditions. The statistical analysis identified the sintering temperature as the most effective factor influencing the relative density of TiB2–SiC ceramics. A relative density of 99.5% was achieved at the optimal SPS conditions; i.e. temperature of 1800 °C, soaking time of 15 min and pressure of 30 MPa by adding 200-nm SiC particulates to the TiB2 matrix. The experimental measurements and predicted values for the relative density of composite fabricated at the optimum SPS conditions and reinforced with the proper SiC particle size were almost similar. The mechanisms of sintering and densification of spark plasma sintered TiB2–SiC composites were discussed in details.

Original languageEnglish
Pages (from-to)11431-11437
Number of pages7
JournalCeramics International
Volume44
Issue number10
DOIs
Publication statusPublished - Jul 2018
Externally publishedYes

Keywords

  • Densification
  • Particle size
  • SiC
  • Spark plasma sintering
  • TiB

Fingerprint

Dive into the research topics of 'Densification improvement of spark plasma sintered TiB2-based composites with micron-, submicron- and nano-sized SiC particulates'. Together they form a unique fingerprint.

Cite this