Effect of nitriding temperature in a glow discharge on the thickness and composition of the nitride zone

Abstract

1. With an increase in nitriding temperature in a glow discharge the zone of chemical compounds increases, reaching a maximum value at ti=600°C. In this way the amount of e-phase in the nitride zone decreases, but with γ′-phase increases. 2. With nitriding in ammonia or carbon-containing atmospheres with ti>600°C the zone of chemical compounds is almost absent on carbon and low-alloy steels. 3. The dependence of nitride layer composition and thickness on temperature under impregnation conditions in a glow discharge differs markedly from dependences for similar properties of a layer obtained with nitriding by classical methods.