Modelling the particle contact influence on the Joule heating and temperature distribution during FLASH sintering

Ricardo Serrazina, Paula M. Vilarinho, Ana M. O. R. Senos, Luis Pereira, Ian M. Reaney, Julian S. Dean

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

FLASH sintering is a field-assisted technique that allows the densification of ceramics in a few seconds at temperatures significantly lower than those of conventional cycles. There is still discussion among the scientific community about the mechanism behind this sintering process, that has been typically attributed to Joule heating, defect creation and movement or liquid phase assisted sintering. Computational modelling can be a powerful tool in helping to explain and predict this process. Using potassium sodium niobate (KNN) as a case study, a lead-free piezoelectric, this work explores Finite Element Modelling to evaluate the dependence of Joule heating generation and temperature distribution as a function of the cubic particle orientation.

Original languageEnglish
Pages (from-to)1205-1211
Number of pages7
JournalJournal of the European Ceramic Society
Volume40
Issue number4
DOIs
Publication statusPublished - 1 Apr 2020

Keywords

  • Finite element modelling
  • Flash sintering
  • Joule heating
  • Microstructure property relationships

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