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

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

Research output: Contribution to journalArticle

46 Citations (Scopus)

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

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Melting
Titanium
Microwaves
Magnetic fields
Crystalline materials
Applicators
Powders
Oxides
Sol-gel process
Gases
Transmission electron microscopy
Scanning electron microscopy
titanium dioxide

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

Cite this

Roy, Rustum ; Fang, Yi ; Cheng, Jiping ; Agrawal, Dinesh Kumar. / Decrystallizing solid crystalline titania, without melting, using microwave magnetic fields. In: Journal of the American Ceramic Society. 2005 ; Vol. 88, No. 6. pp. 1640-1642.
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Decrystallizing solid crystalline titania, without melting, using microwave magnetic fields. / Roy, Rustum; Fang, Yi; Cheng, Jiping; Agrawal, Dinesh Kumar.

In: Journal of the American Ceramic Society, Vol. 88, No. 6, 01.06.2005, p. 1640-1642.

Research output: Contribution to journalArticle

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