Abstract
Plasma nitriding of an X2 CrNiMoN 22 5 3 duplex stainless steel was performed in a high-frequency pulsed plasma installation at 400 °C and 350 °C. The influence of the temperature is discussed in terms of the nitrogen distribution between the nitride layer and the bulk material. An improvement in microhardness, module of elasticity, wear resistance and friction coefficient was achieved after plasma nitriding. Corrosion resistance was influenced in different ways by the two temperatures of nitriding. A temperature of 350 °C did not affect the corrosion resistance remarkably, whereas treatment at 400 CC resulted in a significant decrease in the pitting corrosion resistance.
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