Research Article
Influence Parameters on Nitriding Process of Ferromanganese Alloy
Table 1
Nitrogen pickup of low (0.23%) and high (7.1%) carbon ferromanganese at different experimental conditions.
| Number | Temp., °C | Time, H | Nitrogen pressure, bar | Carbon content, wt.% | Nitrogen pickup, wt.% | 1st exp. | 2nd exp. |
| 1 | 700 | 2 | 1 | 0.23 | 1.010 | 0.990 | 2 | 950 | 2 | 1 | 0.23 | 2.020 | 1.980 | 3 | 700 | 6 | 1 | 0.23 | 2.222 | 2.178 | 4 | 950 | 6 | 1 | 0.23 | 3.232 | 3.168 | 5 | 700 | 2 | 8 | 0.23 | 1.515 | 1.485 | 6 | 950 | 2 | 8 | 0.23 | 6.666 | 6.534 | 7 | 700 | 6 | 8 | 0.23 | 2.778 | 2.723 | 8 | 950 | 6 | 8 | 0.23 | 9.595 | 9.405 | 9 | 700 | 2 | 1 | 7.1 | 0.293 | 0.287 | 10 | 950 | 2 | 1 | 7.1 | 0.636 | 0.624 | 11 | 700 | 6 | 1 | 7.1 | 0.414 | 0.406 | 12 | 950 | 6 | 1 | 7.1 | 0.949 | 0.931 | 13 | 700 | 2 | 8 | 7.1 | 0.455 | 0.446 | 14 | 950 | 2 | 8 | 7.1 | 1.000 | 0.980 | 15 | 700 | 6 | 8 | 7.1 | 0.606 | 0.594 | 16 | 950 | 6 | 8 | 7.1 | 1.313 | 1.287 |
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