Unconventional Short-Term Glow Discharge Nitriding of 316L Austenitic Steel
The AISI 316L grade austenitic steel after glow discharge nitriding at a temperature of T = 598 K and for duration of = 10,8 ks, for different variants of specimen arrangement in the glow-discharge chamber was investigated. In the first variant specimens were placed on the cathode and in the second variant specimens were positioned also on the cathode, but shielded with a booster screen. In order to assess the effectiveness of nitriding process variants a profile analysis examination of obtained surface layers, surface hardness tests and surface layer hardness profile examination, analysis of surface layer structures and corrosion resistance tests were carried out. It was found that application of a booster screen effects in a nitrogen diffusion depth increment into the 316L austenitic steel, resulting in a surface layer thickness escalation.
Jian-Feng Nie and Allan Morton
T. Frączek et al., "Unconventional Short-Term Glow Discharge Nitriding of 316L Austenitic Steel ", Materials Science Forum, Vols. 654-656, pp. 366-369, 2010