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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Печать: 1093-3611
ISSN Онлайн: 1940-4360

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

DOI: 10.1615/HighTempMatProc.2015015869
pages 71-75

METAL SURFACE MODIFICATION BY A NANOSECOND DIFFUSE DISCHARGE IN NITROGEN

M. Erofeev
Institute of High Current Electronics, 2/3 Akademichesky Ave., Tomsk, 634055, Russia; National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050, Russia
M. Shulepov
Institute of High Current Electronics, 2/3 Akademichesky Ave., Tomsk, 634055, Russia
Victor Tarasenko
Institute of High Current Electronics, 2/3 Akademichesky Ave., Tomsk, 634055, Russia; National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050, Russia

Краткое описание

The study demonstrates the feasibility of surface modification by a runaway electron preionized diffuse discharge (REP DD) at atmospheric pressures on a nanosecond pulse generator. It is shown that REP DD treatment provides an up to twofold decrease in carbon concentrations in the surface layers of steel and aluminum. It is found that both materials subjected to REP DD are involved in surface oxidation with the result that the oxygen concentration in steel surface layers increases three times and the surface microhardness of the material is enhanced at different depths, whereas the oxygen concentration in aluminum surface layers remains almost unchanged, and the surface microhardness of the material decreases due to the formation of an amorphous oxide layer.


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