The Effect of a Small Amount SiO2 on Sintering Kinetics of Tetragonal Zirconia Nanopowders

Marharyta Lakusta, Igor Danilenko, Tetyana Konstantinova, Galina Volkova, Igor Nosolev, Oksana Gorban, Susanna Syniakina, Valery Burkhovetskiy

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

In the present paper the sintering behavior of 3 mol% yttria-stabilized zirconia (3Y-TZP) with and without small amount (0.2 wt %) of SiO2 additive was investigated. It has been studied the silica impact which was added in two ways (co-precipitation and mechanical mixing) on sintering kinetics of 3Y-TZP nanopowders at the initial sintering stage. It was found the silica additive leads to the changing in the predominant sintering mechanism at the initial sintering stage from volume (VD) to the grain boundary diffusion (GBD) in nanopowders obtained by co-precipitation. It was shown that the way of silica addition also significantly influence the sintering kinetics of 3Y-TZP. In case of nanopowders with silica additive obtained by mixing method, sintering process occurred due to the predominance of VD mechanism. It was found that the silica additive and the mechanical activation leads to the acceleration of the sintering process.

Original languageEnglish
Article number398
JournalNanoscale Research Letters
Volume12
DOIs
StatePublished - 1 Jan 2017
Externally publishedYes

Keywords

  • Initial sintering stage
  • Silica additive
  • Sintering kinetics
  • Sintering mechanisms
  • Zirconia nanopowders

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics

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