Kinetics of commercial iron and steel 40Kh nitridation under electrolytic heating conditions

Kinetic regularities in saturation with nitrogen of commercial iron specimens sized 5x10x15 mm, and of steel 40 Kh, 20 mm in dia , 40 mm long, have been considered. The thickness of diffusion layers was measure with the use of metallographical analysis, the nitrogen content was determined using chemical and local X-ray spectral analyses. The results obtained permit to make a supposition, that kinetics of nitridation of commercial iron and medium-carbon steels, as well as the nature of phase formation, depend on specific conditions of ammonia transport during anodic process of electrolytic heating