Precipitation and calcination processes for yttrium aluminum garnet precursors synthesized by the urea method

Naoya Matsushita, Noriyoshi Tsuchiya, Katsuto Nakatsuka, Takakimi Yanagitani

Research output: Contribution to journalArticlepeer-review

134 Citations (Scopus)

Abstract

Yttrium aluminum garnet (YAG) precursors for transparent ceramics were synthesized by the urea method under various [urea]/[metal ions] ([U]/[M]) conditions. Monophase YAG was obtained from solutions with a high [U]/[M] ratio after calcination at a temperature of 1200°C. The condition of the precipitates seemed to indicate that the yttrium compounds had precipitated onto the aluminum compounds. The surface morphology and size of the particles were controlled by the [U]/[M] ratio. The different reaction sequences of YAG crystallization for low- and high-ratio samples were dependent on morphology, size, and the quantity of chemical species that was precipitated as carbonate and/or sulfate compounds.

Original languageEnglish
Pages (from-to)1977-1984
Number of pages8
JournalJournal of the American Ceramic Society
Volume82
Issue number8
DOIs
Publication statusPublished - 1999 Jan 1

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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