APPLICATION OF A NON-SELF-SUSTAINED GLOW DISCHARGE INITIATED BY A FOCUSED ELECTRON BEAM IN THE FOREVACUUM PRESSURE REGION FOR NITRIDING THE INNER SURFACE OF NARROW METAL TUBES
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Published:2024
Issue:4
Volume:28
Page:21-28
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ISSN:1093-3611
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Container-title:High Temperature Material Processes An International Quarterly of High-Technology Plasma Processes
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language:en
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Short-container-title:High Temp Mat Proc
Author:
Bakeev I. Yu.,Klimov Aleksandr S.,Medovnik A. V.,Kiki L.J. Ngon A.,Oks Efim M.,Zenin Aleksey A.
Abstract
We have explored some of the features of ion-plasma nitriding the inner surface of narrow extended
metal tubes by the plasma of a non-self-sustained glow discharge initiated by a focused electron beam
in the forevacuum pressure range. The influence of electron beam current on the discharge parameters was determined. We found a non-monotonic dependence of plasma density, nitrogen content in the nitrided surface layer, and layer microhardness on discharge burning voltage. The microhardness of the inner surface of the nitrided tubes reaches values of 1500 kgf/mm<sup>2</sup> for AISI 321 stainless steel and 700 kgf/mm<sup>2</sup> for alloy carbon steel AISI 5135.
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