Mullite precursor part I. Characterization of mullite precursor formed by a reaction of monosilicic acid on aluminum hydroxide

Takushi Yokoyama, Keisuki Nishu, Shunsuke Torii, Yoshio Ikeda, Tokuko Watanabe

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11 Citations (Scopus)

Abstract

By adsorption of monosilicic acid on aluminum hydroxide, an amorphous aluminosilicate (AAS) of Si/Al ratio of 1/3 was formed. When the AAS was heated to 1000°C, mullite (3Al2O3 · 2SiO2) crystallized directly without the formation of a spinel phase. It was clearly evidenced that correct adjustment of three factors, the Si/Al ratio, the proportion of 4- and 6-coordinated aluminums, and the single environment of a SiO4-4 unit (no Si-O-Si bond), is important for the direct mullitization from AAS.

Original languageEnglish
Pages (from-to)2111-2116
Number of pages6
JournalJournal of Materials Research
Volume12
Issue number8
DOIs
Publication statusPublished - Aug 1997

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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