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 language | English |
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Pages (from-to) | 2111-2116 |
Number of pages | 6 |
Journal | Journal of Materials Research |
Volume | 12 |
Issue number | 8 |
DOIs | |
Publication status | Published - Aug 1997 |
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering