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