Conclusions
-
1.
In the process of two-stage nitriding a layer with a dense zone of ε carbonitrides is formed, which ensures dimensional stability of machine parts and good operating characteristics. Grinding can be replaced with light polishing.
-
2.
The properties are best for the nitrided case with a thin (several μm) dense layer of ε carbonitrides. The presence of a dense layer accelerates internal nitriding despite the low nitrogen potential of the atmosphere in the second stage of nitriding.
-
3.
To obtain a nitrided layer of smaller thickness (parts of machines not subjected to overhaul) one can use brief gas nitriding with a given nitrogen potential for each steel.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literature Cited
Yu. M. Lakhtin and Ya. D. Kogan, Nitriding of Steel [in Russian], Mashinostroenie, Moscow (1976), p. 225.
A. A. Yurgenson, Nitriding in Power Machinery Construction [in Russian], Mashgiz, Moscow (1962), p. 132.
J. Zysk, Nowoczesne Procesy Obrobki Cieplno-Chemicznej, Warszawa, IMP, Zeszyt No. 3/7 (1973).
B. Clayton and K. Sachs, "Reduction of the white layer on the surface of nitrided components," Heat Treatment 76, 16th Int. Heat Treatment Conf., Stratford (1976).
J. Zysk, Metaloznawstwo i Obrobka Cieplna, No. 4, 2 (1973).
J. Zysk, Harterei-Technische Mitteilungen, No. 3, 137 (1976).
Additional information
Institute of Precision Mechanics, Warsaw. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 12–15, June, 1980.
Rights and permissions
About this article
Cite this article
Zysk, J., Tatsikovski, J. & Sulkovski, I. Formation of diffusion layers during gas nitriding. Met Sci Heat Treat 22, 392–395 (1980). https://doi.org/10.1007/BF00693639
Issue Date:
DOI: https://doi.org/10.1007/BF00693639