Sol-Gel Synthesis of λ-Na 2O·xAl 2O 3 Films

Alessandro Martucci*, Sabrina Sartori, Alessandro Muffato, Lidia Armelao, Elisabetta Di Bartolomeo, Enrico Traversa, Massimo Guglielmi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Na 2O·xAl 2O 3 (x = 9, 11) films have been obtained by sol-gel method. Crystallization processes during heat treatments have been investigated by X-ray diffraction analysis. A metastable phase with the mullite structure, λ-Na 2O·xAl 2O 3, has been observed starting from 800°C. Films remained stable after a heat treatment at 1000°C for 250 h. Impedance spectroscopy measurements showed that the films of λ-Na 2O·xAl 2O 3 possess a large three-dimensional ionic conductivity at 400°C.

Original languageEnglish (US)
Pages (from-to)1965-1968
Number of pages4
JournalJournal of the American Ceramic Society
Volume86
Issue number11
StatePublished - Nov 2003
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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