Electrolytic Plasma Nitriding of Medium-Carbon Steel 45 for Performance Enhancement
Satbayeva Z. Maulit A. Ispulov N. Baizhan D. Rakhadilov B. Kusainov R.
October 2024Multidisciplinary Digital Publishing Institute (MDPI)
Crystals
2024#14Issue 10
This article analyzes the effect of electrolytic plasma nitriding on the performance of medium-carbon steel 45 under increased mechanical loads and in aggressive environments. Nitrided samples in carbamide electrolytes, both with and without the addition of ammonium nitrate, were compared to the initial material. SEM with EDX and XRD analysis was used to examine the microstructure and phase composition of nitrided samples. Wear resistance was studied using the ‘ball-on-disk’ method and Vickers microhardness testing, while corrosion resistance was studied using potentiodynamic polarization curves. The study results show that the sample without ammonium nitrate demonstrated better mechanical and corrosion properties due to a more homogeneous and denser nitride layer, approximately 10 µm thick, containing phases FeN and Fe4N. Its wear resistance doubled compared to that of the initial sample. The sample treated in an electrolyte with the addition of ammonium nitrate demonstrated a higher current density (2.8672 × 10−5 A/cm2) and a lower corrosion potential (−0.565 V) compared to the initial sample (i_corr = 1.8971 × 10⁻5 A/cm2, E_corr = −0.480 V) and the sample without ammonium nitrate (i_corr = 1.7315 × 10−5 A/cm2, E_corr = −0.376 V). This is due to the formation of an uneven nitride layer and the presence of microcracks on the surface.
aqueous electrolyte , diffusion saturation , electrolytic plasma nitriding , nitride layer , surface modification , wear resistance
Text of the article Перейти на текст статьи
“PlasmaScience” LLP, Ust-Kamenogorsk, 070018, Kazakhstan
Research School of Physical and Chemical Sciences, Shakarim University, Semey, 071412, Kazakhstan
Computer Science Faculty, Toraighyrov University, Pavlodar, 140008, Kazakhstan
Research Center “Surface Engineering and Tribology”, Sarsen Amanzholov East Kazakhstan University, Ust-Kamenogorsk, 070000, Kazakhstan
“PlasmaScience” LLP
Research School of Physical and Chemical Sciences
Computer Science Faculty
Research Center “Surface Engineering and Tribology”
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026