Corrosion resistance of plasma nitrided ferritic steels X12Cr13 and X6Cr17

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Corrosion resistance of plasma nitrided ferritic steels X12Cr13 and X6Cr17

Popis výsledku v původním jazyce

The ferritic stainless steels X12Cr13 and X6Cr17 were subjected to plasma nitriding at temperature of 400°C and 550 °C, 24 h in 3H2:1N2 (l/h) and 1H2:3N2 (l/h) nitriding gas ratio and compared to untreated one. The microstructure and microhardness of the untreated and nitrided stainless steel were evaluated. The corrosion properties of the untreated and plasma nitrided steel samples were evaluated using the anodic potentiodynamic polarization tests in neutral 2.5% NaCl deaerated solution. The phase analysis of nitrided steels samples was compared to untreated one. The results showed that plasma nitriding process on the X12Cr13 and X6Cr17 steels produced a nitride case with iron carbides Fe3C and iron nitrides Fe4N at lower temperature and above that chromium nitrides Cr4N4 and chromium iron carbide Cr15Fe7C6 at higher temperature of plasma nitriding process. Plasma nitriding process significantly increased the surface hardness of the martensitic stainless steels. The pitting was evaluated, and the pitting coefficient was calculated. During electrochemical corrosion tests, the untreated X12Cr13 and X6Cr17 stainless steels showed mostly slightly higher corrosion rates compared to plasma nitrided steel at lower temperature and extremely lower corrosion rate compared to plasma nitrided steel at higher temperature of plasma nitriding process.

Název v anglickém jazyce

Corrosion resistance of plasma nitrided ferritic steels X12Cr13 and X6Cr17

Popis výsledku anglicky

The ferritic stainless steels X12Cr13 and X6Cr17 were subjected to plasma nitriding at temperature of 400°C and 550 °C, 24 h in 3H2:1N2 (l/h) and 1H2:3N2 (l/h) nitriding gas ratio and compared to untreated one. The microstructure and microhardness of the untreated and nitrided stainless steel were evaluated. The corrosion properties of the untreated and plasma nitrided steel samples were evaluated using the anodic potentiodynamic polarization tests in neutral 2.5% NaCl deaerated solution. The phase analysis of nitrided steels samples was compared to untreated one. The results showed that plasma nitriding process on the X12Cr13 and X6Cr17 steels produced a nitride case with iron carbides Fe3C and iron nitrides Fe4N at lower temperature and above that chromium nitrides Cr4N4 and chromium iron carbide Cr15Fe7C6 at higher temperature of plasma nitriding process. Plasma nitriding process significantly increased the surface hardness of the martensitic stainless steels. The pitting was evaluated, and the pitting coefficient was calculated. During electrochemical corrosion tests, the untreated X12Cr13 and X6Cr17 stainless steels showed mostly slightly higher corrosion rates compared to plasma nitrided steel at lower temperature and extremely lower corrosion rate compared to plasma nitrided steel at higher temperature of plasma nitriding process.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Advanced Batteries Accumulators and Fuel Cells 20th ABAF

ISBN

978-80-214-5774-4

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

397-405

Název nakladatele

Brno University of Technology Faculty of Electrical Engineering and Communication Department of Electrical and Electronic Technology

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

25. 8. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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