Plasma Nitriding of Surface Mo-Enriched Sintered Iron

Figure 4

Microhardness profiles of the cross-section of sintered and plasma-nitrided plain iron samples.

(a) N5TA nitrided at 540°C

(b) N5TB nitrided at 450°C

(c) N75TA nitrided at 540°C

(d) N75TB nitrided at 450°C