The solubility limit of SiO2 in α-alumina at 1600 °c

Ruth Moshe, Alex Berner, Wayne D. Kaplan

Research output: Contribution to journalArticlepeer-review

Abstract

The solubility limit of Si in α-alumina was measured using wavelength-dispersive spectroscopy on a scanning electron microscope. Samples were doped with Si such that the equilibrated material would contain two phases: mullite (3Al2O3·2SiO2) and alumina saturated with Si. Thus the amount of Si measured in the alumina grains represents the solubility limit. Measurements were conducted on water-quenched and furnace-cooled samples. For the quenched samples the Si solubility limit in Al2O3 was found to be 188 ± 7 ppm at 1600°C.

Original languageEnglish
Pages (from-to)40-43
Number of pages4
JournalScripta Materialia
Volume86
DOIs
StatePublished - 1 Sep 2014

Keywords

  • Alumina
  • Ceramics
  • Silicon
  • Sintering
  • Wavelength-dispersive X-ray spectroscopy

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • General Materials Science

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