A study of plasma-nitrided AISI type 316 stainless steel

Abstract

Plasma nitriding of an AISI type 316 stainless steel has been carried out in the temperature range 723 - 973 K. Detailed analysis of the distribution of various nitrides in the nitrided zone has been performed using X-ray diffraction and scanning electron microscopy techniques. The consequences of thermal treatments following nitriding have been studied. The various nitride phases that form during the nitriding process and on heat treatment have been catalogued. An effective plasma-nitriding treatment schedule has been formulated to ensure uniform nitriding and optimal hardness. The treatment is based on alternate nitriding and diffusion annealing treatment. © 1987.