Structure and properties of the surface layer high chrome austenitic steel, submitted to ion-plasma nitrogen

Yu.F. Ivanov, E.A. Petrikova, S.V. Lykov, Ju.A. Denisova, A.D. Teresov, O.S. Tolkachev

Institute of High Current Electronics SB RAS

DOI: 10.26456/pcascnn/2020.12.805

Original article

Abstract: Ion nitriding is one of the most common methods of surface hardening of parts and tools. The purpose of this work is to identify and analyze the laws governing the transformation of the structure and properties of the surface layer of high-chromium stainless steel subjected to low-temperature nitriding in a low-pressure gas discharge plasma. It was found that the saturation with nitrogen (793 K, 3 hours) of austenitic high-chromium steel 20X23H18 in a low-pressure gas discharge plasma is accompanied by the formation of a plate type structure with alternating plates of austenite and iron nitride in a layer (55 – 60) μm thick (transverse plate sizes do not exceed 10 nm), the microhardness and wear resistance of which exceed the microhardness of the initial state by 6,5 times, wear resistance – more than 400 times.

Keywords: low pressure gas discharge plasma, austenitic steel, phase composition, defective substructure, microhardness, wear resistance

• Yury F. Ivanov – Dr. Sc., Chief Researcher of the Laboratory of Plasma Emission Electronics, Institute of High Current Electronics SB RAS
• Elizaveta A. Petrikova – Junior Researcher of the Laboratory of Plasma Emission Electronics, Institute of High Current Electronics SB RAS
• Sergey V. Lykov – Chief Specialist, Group of innovative activities and intellectual property, Institute of High Current Electronics SB RAS
• Julia A. Denisova – Ph.D., Senior Researcher, Laboratory of Beam-Plasma Surface Engineering, Institute of High Current Electronics SB RAS
• Anton D. Teresov – Researcher of the Laboratory of Beam-Plasma Surface Engineering, Institute of High Current Electronics SB RAS
• Oleg S. Tolkachev – Junior Researcher of the Laboratory of Plasma Emission Electronics, Institute of High Current Electronics SB RAS

Reference:

Ivanov, Yu.F. Structure and properties of the surface layer high chrome austenitic steel, submitted to ion-plasma nitrogen / Yu.F. Ivanov, E.A. Petrikova, S.V. Lykov, Ju.A. Denisova, A.D. Teresov, O.S. Tolkachev // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2020. — I. 12. — P. 805-815. DOI: 10.26456/pcascnn/2020.12.805. (In Russian).

Full article (in Russian): download PDF file

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