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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Print: 1093-3611
ISSN Online: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.2015015729
pages 113-119

PULSED PLASMA FLOW INTERACTION WITH A STEEL SURFACE

A. M. Zhukeshov
National Laboratory of Nanotechnology, Kazakh National University named after al-Farabi, 71 al-Farabi Ave, Almaty, 050038, Kazakhstan
A. T. Gabdullina
National Laboratory of Nanotechnology, Kazakh National University named after al-Farabi, 71 al-Farabi Ave, Almaty, 050038, Kazakhstan
A. U. Amrenova
National Laboratory of Nanotechnology, Kazakh National University named after al-Farabi, 71 al-Farabi Ave, Almaty, 050038, Kazakhstan
Z. Moldabekov
National Laboratory of Nanotechnology, Kazakh National University named after al-Farabi, 71 al-Farabi Ave, Almaty, 050038, Kazakhstan
B. M. Ibraev
National Laboratory of Nanotechnology, Kazakh National University named after al-Farabi, 71 al-Farabi Ave, Almaty, 050038, Kazakhstan
B. Useinov
North Kazakhstan State University named after M. Kozybayev, 86 Pushkin Str, Petropavlovsk, 150000, Kazakhstan
Sh. G. Giniyatova
L.N. Gumilyov Eurasian National University, 2 Mizroyan Str., Astana, 050008, Kazakhstan

ABSTRACT

The process of high-temperature pulsed plasma flow interaction with the surface of steel samples is considered. The features of plasma treatment in different regimes and the changes in the structure and properties of the steel samples after plasma impact are discussed. The surface of the stainless steel samples was modified by forming nanosize columnar crystallites mainly located along the grain boundaries. The structure changes in the steels studied are associated with the formation of a new phase of iron nitride and significant microdistortions of the crystalline lattice. A metallographic analysis confirms the possible increase in the microhardness of the material after the surface treatment by a pulsed plasma. But the main reason for the hardening is the decrease in the crystallite size occurring in all types of materials.