Mechanically activated synthesis of single crystalline MgO nanostructures

M. Nusheh, H. Yoozbashizadeh, M. Askari, Hidekazu Kobatake, Hiroyuki Fukuyama

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

One-dimensional (1D) MgO structures were successfully synthesized via carbothermic reduction of mechanically activated mixture of MgO and graphite. Mechanical activation of source materials before carbothermic reduction can substantially enhance the formation of MgO products at a temperature (1000 °C) relatively lower than that required in previous approaches (≥1200 °C). However, the morphology of MgO formed is dependent on the degree of mechanical activation and the condition of the subsequent carbothermic reduction. Two distinctive morphologies were found for MgO products synthesized using our method: single crystalline nanorods with rectangular cross-sections whose diameters range from 50 to 100 nm, and microfibers (∼5 μm in diameter) with and without branching. The synthesized products were systematically studied by XRD, SEM, TEM, and EDS. The results show that the nucleation and growth process of these morphologies seem to be a vapor-solid mechanism.

Original languageEnglish
Pages (from-to)715-720
Number of pages6
JournalJournal of Alloys and Compounds
Volume506
Issue number2
DOIs
Publication statusPublished - 2010 Sep 17

Keywords

  • Kinetics
  • Mechanical alloying
  • Nanostructured materials
  • Scanning electron microscopy
  • Transmission electron microscopy

ASJC Scopus subject areas

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

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