Plasma Nitrided Stainless Steel

In this work active screen plasma nitriding aspn a novel plasma nitriding technique was used to modify the surface of 316 austenitic stainless steel.

Plasma nitrided stainless steel. The hardness achieved on the surface decreases with depth until the core hardness is reached. The graph in fig. High temperature gas nitriding of stainless steels is a unique case hardening process for cavitation wear and pitting resistance. In the present investigation the response of 17 4 ph stainless steel to plasma nitriding over a wide range of treatment temperature 350 5000c and fixed duration 4 hours has been investigated and experimental results have shown that the nitrided layer characteristics are highly process conditions dependent.

Improved corrosion resistance of plasma nitrided layers on stainless steel was also observed when the plasma nitriding process was conducted at a lower temperature 400 c. Each fundamental process in this low temperature inner nitriding is analyzed by xrd scanning electron microscopy sem electron dispersive x ray spectroscopy edx and electron back scattering diffraction ebsd. High temperature gas nitriding is carried out on stainless steel alloys at temperatures between 1050 and 1200 c 1925f 2200 f. The presence of s phase in the nitrided layers which is characterized by a high nitrogen content in solid solution or chromium nitrides is responsible for improved.