Microstructure and electrochemical properties of the vanadium alloys after low-temperature nitrogen plasma treatment

• Autorzy: Duriagina Z. A. , Ryzhak D. D. , Kulyk V. V. , Tepla T. L. , Lemishka I. A. , Bohun L. I .

Identyfikatory

DOI

10.5604/01.3001.0014.1451

• Języki publikacji: EN

Abstrakty

EN

Purpose: The proposed research aims to determine the expediency of surface treatment of vanadium alloys of V-Cr and V-Ti systems due to irradiation of their surfaces with low- temperature nitrogen plasma using plasma torch NO-01. Design/methodology/approach: The investigation of microstructure and X-ray fluorescence analysis (XRF) of the samples were performed using an electron microscope TESCAN Vega3. The microhardness (Vickers hardness) of the samples was measured before and after surface treatment. The study of corrosive properties of the surface layers was performed by an electrochemical impedance spectroscopy (EIS) method. Corrosion damages were identified using impedance dependences. Findings: The microstructure of the surface layers of the V-8Ti, V-15Cr, and V-35Cr alloys in the initial state and after plasma treatment have been investigated. The chemical composition of the surface layers is determined and comparative measurements of the microhardness of these alloys are carried out. Corrosion-electrochemical properties (corrosion potentials, electrochemical impedance spectroscopy and constructed potential-dynamic polarization curves) of investigated alloys after treatment with nitrogen plasma are evaluated. Research limitations/implications: The results obtained using laboratory samples should be checked at the conditions of power equipment operation. Practical implications: This treatment has advantages over other methods of surface engineering since it provides strong surface plastic deformation and the possibility of formation of secondary phases resulting in increases in surface hardness and corrosion resistance. Originality/value: Vanadium alloys have significant advantages over other structural materials due to their high thermal conductivity and swelling resistance, high strength and plasticity up to temperatures of 700-800°C, and good weldability.

Słowa kluczowe

EN

vanadium alloy; surface layers; microhardness; corrosion

PL

stop wanadu; warstwy powierzchniowe; mikrotwardość; korozja

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2020
• Tom: Vol. 102, nr 1
• Strony: 5--12
• Opis fizyczny: Bibliogr. 17 poz.

Twórcy

autor

Duriagina Z. A.

• Lviv Polytechnic National University, 12 Bandera St., Lviv, 79013, Ukraine
• The John Paul II Catholic University of Lublin, 14 Racławickie Av., 20-950 Lublin, Poland

autor

Ryzhak D. D.

• Lviv Polytechnic National University, 12 Bandera St., Lviv, 79013, Ukraine

autor

Kulyk V. V.

• Lviv Polytechnic National University, 12 Bandera St., Lviv, 79013, Ukraine

autor

Tepla T. L.

• Lviv Polytechnic National University, 12 Bandera St., Lviv, 79013, Ukraine

autor

Lemishka I. A.

• Lviv Polytechnic National University, 12 Bandera St., Lviv, 79013, Ukraine

autor

Bohun L. I .

• Lviv Polytechnic National University, 12 Bandera St., Lviv, 79013, Ukraine

Bibliografia

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