Comparisons of grain size-density trajectory during microwave and conventional sintering of titanium nitride

D. Demirskyi, D. Agrawal, A. Ragulya

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

A broad range of sintering temperatures and hold times had been systematically varied to investigate the "relative density/grain size" trajectories for titanium nitride specimens during microwave and conventional sintering. Fully dense materials with a submicron grain size (around 170 nm using microwave sintering and around 240 nm using conventional sintering) are achievable using the simple "ramp & hold" approach. Improvement of the mechanical properties, including increase in hardness (from 18 to 20 GPa), fracture toughness (from 2.9 to 3.4 MPa m1/2), was observed due to grain refinement in case of microwave sintering. The area for the future optimization for the sintering schedule for further grain refinement has been proposed.

Original languageEnglish
Pages (from-to)498-501
Number of pages4
JournalJournal of Alloys and Compounds
Volume581
DOIs
Publication statusPublished - 2013 Jan 1
Externally publishedYes

Keywords

  • Ceramics
  • Grain growth
  • Microwave heating
  • Sintering

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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