The influences of fluorine and chlorine ions on the formation of nanostructure forsterite during mechanical activation of talc and periclase

R. Emadi, Fariborz Tavangarian, R. Zamani Foroushani, A. Gholamrezaie

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

The effects of mechanical activation of a powder mixture of basic talc and periclase on the reaction rate of the formation of the forsterite structure were studied in the absence and presence of fluorine and chlorine ions. Mechanical activation with fluorine/chlorine ions caused the formation of a series of intermediate transition compounds in an explosive reaction that enhanced the forsterite fabrication rate. Fluorine/chlorine ions were released from the system by hydrolysis. Single-phase nanocrystalline forsterite powder was successfully synthesized by 1 h of mechanical activation with subsequent annealing at 1000 and 1200 °C for 1 h in the presence of fluorine ions. In the presence of chlorine ions, single-phase forsterite powder was obtained after 1 h of mechanical activation with subsequent annealing at 1200 °C for 1 h, but the crystallite size of this sample was larger than 100 nm. In the absence of these ions, forsterite can be fabricated by 5 h of mechanical activation with subsequent annealing at 1000 °C for 1 h.

Original languageEnglish (US)
Pages (from-to)538-543
Number of pages6
JournalJournal of Ceramic Processing Research
Volume12
Issue number5
StatePublished - Dec 19 2011

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

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