Rapid identification of steatite-enstatite polymorphs at various temperatures

Bruno Reynard, Jay D. Bass, Jennifer M. Jackson

Research output: Contribution to journalArticle

Abstract

The mechanical properties of steatite ceramics after high-temperature processing depend on inversion of high-temperature Mg2Si2O6 protoenstatite polymorph to low clino- or ortho-enstatite, which are characterized by Raman spectroscopy. The Raman spectrum of a pure Mg2Si2O6 protoenstatite is sufficiently distinct from those of low clino- and ortho-enstatite to allow rapid identification in a bulk sample both at ambient and high temperatures. With its high-lateral resolution (about 2 μm), speed, and ease of application on rough materials, Raman spectroscopy can be used to map transformation sequences of enstatite in quenched materials or at high temperature during the fabrication of the steatite-type ceramics, and their relationship with microstructural defects such as voids and cracks.

Original languageEnglish (US)
Pages (from-to)2459-2462
Number of pages4
JournalJournal of the European Ceramic Society
Volume28
Issue number13
DOIs
StatePublished - Sep 1 2008

Keywords

  • Microstructure
  • Optical microscopy
  • Silicate
  • Spectroscopy

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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