Decrystallizing solid crystalline titania, without melting, using microwave magnetic fields

Rustum Roy, Yi Fang, Jiping Cheng, Dinesh Kumar Agrawal

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

TiO 2 - a prototype ceramic - was decrystallized in a 2.45 GHz AC magnetic field in a single mode TE 103 applicator. The titania powders were synthesized by a sol-gel process and pressed into circular pellets. The pellets were very slightly reduced at 1273 K in a reducing atmosphere. The reduced pellets were introduced into the single mode microwave cavity and placed at the magnetic field maximum node and exposed for 10-30 s in a forming gas atmosphere. The reacted samples were then characterized by XRD, SEM, Raman, and TEM. The data presented in this note demonstrate that a very short treatment in the AC magnetic field at 2.45 GHz can transform rutile structure oxides to a noncrystalline state.

Original languageEnglish (US)
Pages (from-to)1640-1642
Number of pages3
JournalJournal of the American Ceramic Society
Volume88
Issue number6
DOIs
StatePublished - Jun 1 2005

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

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