Issues »  Volume 47, Issue 9

Pulsed Glow Discharge Plasma Nitriding of Commercially Pure Titanium BT1-0

G. P. Bolotov$^{1}$, O. V. Filatov$^{2,3}$, M. G. Bolotov$^{1}$, O. O. Novomlynets$^{1}$

$^{1}$Chernihiv Polytechnic National University, 95 Shevchenko Str.,UA-14035 Chernihiv, Ukraine
$^{2}$G. V. Kurdyumov Institute for Metal Physics, N.A.S. of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine
$^{3}$National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Beresteiskyi Ave., UA-03056 Kyiv, Ukraine

Received: 10.01.2025; final version - 07.04.2025. Download: PDF

Surface hardening of commercially pure titanium VT1-0 (Grade 2) by plasma nitriding within the DC glow discharge initiated in the pulsed and stationary modes is investigated. The experiments are carried out in pure nitrogen at a pressure in the reactor of 150 Pa and temperature of 450°C and 550°C with the treatment-duration changes from 3 to 9 hours. In these plasma-nitriding conditions, a pulsed glow discharge provides a more hardening effect with the hardness of the surface layer, which is by 15–25% higher than that obtained in a steady glow discharge and by 2–5 times higher than reference sample. As revealed, an increase in duty cycle from 40 to 80% at a pulse train frequency of 1 kHz during pulsed glow discharge plasma nitriding leads to an increase in the microhardness of a titanium surface by 25–30%.

Key words: plasma nitriding, commercially pure titanium, abnormal DC glow discharge, pulsed glow discharge, surface modification.

URL: https://mfint.imp.kiev.ua/en/abstract/v47/i09/1003.html

DOI: https://doi.org/10.15407/mfint.47.09.1003

PACS: 52.50.-b, 52.77.-j, 52.80.Hc, 52.80.Vp, 62.20.Qp, 66.30.je, 81.65.Lp

Citation: G. P. Bolotov, O. V. Filatov, M. G. Bolotov, and O. O. Novomlynets, Pulsed Glow Discharge Plasma Nitriding of Commercially Pure Titanium BT1-0, Metallofiz. Noveishie Tekhnol., 47, No. 9: 1003–1015 (2025)

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