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Low-Temperature Fabrication of Plate-like α-Al 2 O 3 with Less NH 4 F Additive.
- Source :
- Materials (1996-1944); Jun2023, Vol. 16 Issue 12, p4415, 11p
- Publication Year :
- 2023
-
Abstract
- Fluorinated compounds are effective mineralization agents for the fabrication of plate-like α-Al<subscript>2</subscript>O<subscript>3</subscript>. However, in the preparation of plate-like α-Al<subscript>2</subscript>O<subscript>3</subscript>, it is still an extremely challenging task to reduce the content of fluoride while ensuring a low synthesis temperature. Herein, oxalic acid and NH<subscript>4</subscript>F are proposed for the first time as additives in the preparation of plate-like α-Al<subscript>2</subscript>O<subscript>3</subscript>. The results showed that plate-like α-Al<subscript>2</subscript>O<subscript>3</subscript> can be synthesized at a low temperature of 850 °C with the synergistic effect of oxalic acid and 1 wt.% NH<subscript>4</subscript>F. Additionally, the synergistic effect of oxalic acid and NH<subscript>4</subscript>F not only can reduce the conversion temperature of α-Al<subscript>2</subscript>O<subscript>3</subscript> but also can change the phase transition sequence. [ABSTRACT FROM AUTHOR]
- Subjects :
- OXALIC acid
PHASE transitions
LOW temperatures
ADDITIVES
Subjects
Details
- Language :
- English
- ISSN :
- 19961944
- Volume :
- 16
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Materials (1996-1944)
- Publication Type :
- Academic Journal
- Accession number :
- 164686820
- Full Text :
- https://doi.org/10.3390/ma16124415