Characterization of yttrium aluminate garnet precursors synthesized via precipitation using ammonium bicarbonate as the precipitant

Ji Guang Li, Takayasu Ikegami, Jong Heun Lee, Toshiyuki Mori

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Stoichiometric yttrium aluminate garnet (Y3Al5O12) precursors with a wide range of chemical compositions were precipitated by dripping a mixed solution of ammonium aluminum sulfate and yttrium nitrate into ammonium bicarbonate solutions. The resultant precursors were characterized by chemical analysis, infrared spectroscopy, differential thermal analysis/thermogravimetry, x-ray diffractometry, and scanning electron microscopy. The effects of reaction temperature, precipitant concentration, dripping speed of the salt solution, and the molar ratio of precipitant/total-cations on the composition, thermal behavior, and particle morphology of the resultant precursors were investigated. The precipitation conditions that yield carbonate precursors composed of ammonium dawsonite [NH4Al(OH)2CO3] and yttrium normal carbonate [Y2(CO3)3 · 3H2O] were determined.

Original languageEnglish
Pages (from-to)2375-2386
Number of pages12
JournalJournal of Materials Research
Volume15
Issue number11
Publication statusPublished - 2000 Nov 1
Externally publishedYes

Fingerprint

Ammonium bicarbonate
Yttrium
Garnets
yttrium
garnets
carbonates
Carbonates
dawsonite
Chemical analysis
ammonium nitrates
thermogravimetry
chemical analysis
Ammonium Compounds
Nitrates
Differential thermal analysis
Thermogravimetric analysis
Cations
Infrared spectroscopy
sulfates
chemical composition

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Characterization of yttrium aluminate garnet precursors synthesized via precipitation using ammonium bicarbonate as the precipitant. / Li, Ji Guang; Ikegami, Takayasu; Lee, Jong Heun; Mori, Toshiyuki.

In: Journal of Materials Research, Vol. 15, No. 11, 01.11.2000, p. 2375-2386.

Research output: Contribution to journalArticle

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