Influence of additives on the morphology of α-Al2O3 platelets synthesized in a molten salt
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Trisodium phosphate (Na3PO4·12H2O) and titanyl sulfate (TiOSO4) were chosen to study the influence of additives on the morphology of α-Al2O3 platelets synthesized by molten salt synthesis. When Na3PO4·12H2O is added, α-Al2O3 platelets become thin and quite irregular. Besides, less overlapped particles can be found. When TiOSO4 is added, regular hexagonal α-Al2O3platelets with a decreased size and increased thickness are obtained. When 0.51 wt% Na3PO4·12H2O and 12 wt% TiOSO4 are added, α-Al2O3 platelets with a regular shape and an aspect ratio of 12.5 are developed. The mechanism of Na3PO4·12H2O and TiOSO4 on the morphology of α-Al2O3 platelets is also discussed in this paper.
Abstract
Trisodium phosphate (Na3PO4·12H2O) and titanyl sulfate (TiOSO4) were chosen to study the influence of additives on the morphology of α-Al2O3 platelets synthesized by molten salt synthesis. When Na3PO4·12H2O is added, α-Al2O3 platelets become thin and quite irregular. Besides, less overlapped particles can be found. When TiOSO4 is added, regular hexagonal α-Al2O3platelets with a decreased size and increased thickness are obtained. When 0.51 wt% Na3PO4·12H2O and 12 wt% TiOSO4 are added, α-Al2O3 platelets with a regular shape and an aspect ratio of 12.5 are developed. The mechanism of Na3PO4·12H2O and TiOSO4 on the morphology of α-Al2O3 platelets is also discussed in this paper.
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