Open Access
Table 1
Summary of milling experimental conditions.
| No. | Coating material (Sn) | Coated material | Milling sequence | |||
|---|---|---|---|---|---|---|
| 1st step (preparation) | Milling speed (rpm) | 2nd step (coating) | Milling speed (rpm) | |||
| 1 | Powder | f-Al2O3 | – | – | 4.5 g Sn + 0.5 g Al2O3 (1 h) | 300 |
| 2 | Granules | c-Al2O3 | – | – | 4.5 g Sn + 0.5 g Al2O3 (1 h) | 300 |
| 3 | Granules | c-Al2O3 | – | – | 4.5 g Sn + 0.5 g Al2O3 (5 min) | 300 |
| 4 | Granules | c-Al2O3 | – | – | 4.5 g Sn + 0.5 g Al2O3 (1 h) | 150 |
| 5 | Granules | c-Al2O3 | – | – | 4.5 g Sn + 0.5 g Al2O3 (30 min) | 150 |
| 6 | Granules | c-Al2O3 | – | – | 4.5 g Sn + 0.5 g Al2O3 (15 min) | 150 |
| 7 | Granules | – | 5 g Sn (1 h) | 300 | – | – |
| 8 | Residues on jar and balls | c-Al2O3 | – | – | 0.5 g Al2O3 (15 min) | 150 |
| 9 | Granules | c-Al2O3 | 5 g Sn (1 h) | 300 | 5 g Al2O3 (15 min) | 150 |
| 10 | Granules + 1% stearic acid | c-Al2O3 | 5 g Sn (1 h) | 300 | 5 g Al2O3 (15 min) | 150 |
| 11 | Granules | c-Al2O3 + 1% stearic acid | 5 g Sn (1 h) | 300 | 5 g Al2O3 (15 min) | 150 |
| 12 | Granules | c-Al2O3 | 5 g Sn (1 h) | 300 | +5 g Al2O3 (15 min) | 150 |
| 13 | Granules | c-Al2O3 | 5 g Sn (1 h) | 300 | +5 g Al2O3 (15 min) | 300 |
| 14 | Granules | c-Al2O3 | 5 g Sn (1 h) | 300 | +5 g Al2O3 (30 min) | 150 |
| 15 | Granules | c-Al2O3 | 5 g Sn (1 h) | 300 | +5 g Al2O3 (30 min) | 300 |
| 16 | Granules | c-Al2O3 | 5 g Sn (1 h) | 300 | +5 g Al2O3 (1 h) | 150 |
| 17 | Granules | c-Al2O3 | 5 g Sn (1h) | 300 | +5 g Al2O3 (1 h) | 300 |
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