Synthesis of α-alumina hexagonal platelets using a mixture of boehmite and potassium sulfate

Hsing I. Hsiang, Tsung Hao Chen, Chia Che Chuang

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Single-crystal α-alumina (Al2O3) hexagonal platelets with a diameter of about 200 nm and 25 nm in thickness were synthesized by heating a mixture of boehmite and potassium sulfate at 1000°C for 2 h and washing with water. The potassium sulfate addition effects on the Al2O3 phase and morphology were investigated using differential thermal analysis (DTA), X-ray diffraction (XRD), and transmission electron microscopy (TEM). It was found that potassium sulfate addition helps in the formation of single-crystal α-Al2O3 hexagonal platelets and promotes phase transformation from intermediate γ-Al 2O3 to α-Al2O3.

Original languageEnglish
Pages (from-to)4070-4072
Number of pages3
JournalJournal of the American Ceramic Society
Volume90
Issue number12
DOIs
Publication statusPublished - 2007 Dec 1

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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