Hydrogen charging of plasma nitrided steel in acid solution

• Autorzy: Sobieszczyk S. , Łunarska E. , Ćwiek J. , Zieliński A. , Nikiforow K.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Purpose of this paper is evaluation of susceptibility of plasma nitrided structural steel to hydrogen absorption. Design/methodology/approach: Structural steel, nitrided at glow discharge in the gas mixture of various N2, H2, Ar content was subjected to cathodic hydrogen charging in acid solution simulating the aged engine oil. The effect of the nitrided layers on the hydrogen transport and on the irreversible trapping was evaluated by the measurements of the hydrogen permeation rate and by the vacuum extraction, respectively. Findings: In the presence of the not defected compact nitride layer, no hydrogen permeation through the steel has been stated under the experimental conditions. Absorbed hydrogen was accumulated within this layer. Research limitations/implications: Further research should be taken to evaluate the influence of compact nitride zone on hydrogen degradation under tensile stress. Practical implications: Plasma nitriding treatment could improve the properties of the low-alloy high-strength structural steels exploited in aggressive environments, which is especially important in the case of possible hydrogen charging of exploited steel. Originality/value: Using the atmosphere of the higher nitrogen to hydrogen ratio at plasma assisted nitriding provides the formation of thin compact nitride zone, highly protective against corrosion and hydrogen degradation.

Słowa kluczowe

EN

corrosion; plasma nitriding; hydrogen permeation; hydrogen uptake

PL

korozja; azotowanie plazmowe; przenikanie wodoru; pobieranie wodoru

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 17, nr 1-2
• Strony: 205--208
• Opis fizyczny: Bibliogr. 16 poz., rys., tab., wykr.

Twórcy

autor

Sobieszczyk S.

• Faculty of Mechanical Engineering, Gdańsk University of Technology, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland

autor

Łunarska E.

• Cardinal Stefan Wyszynski University of Warsaw, ul. Dewajtis 5, Warsaw, Poland

autor

Ćwiek J.

• Faculty of Mechanical Engineering, Gdańsk University of Technology, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland

autor

Zieliński A.

• Faculty of Mechanical Engineering, Gdańsk University of Technology, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland

autor

Nikiforow K.

• Institute of Physical Chemistry PAS, ul. Kasprzaka 44/52, Warsaw, Poland

Bibliografia

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