Oxidation and hydrogen behaviur in Zr-2Mn alloy

• Autorzy: Zienkiewicz N. , Paradowska J. , Serbiński W. , Gajowiec G. , Hernik A. , Zieliński A.

Identyfikatory

DOI

10.1515/adms-2017-0030

• Języki publikacji: EN

Abstrakty

EN

The purpose of the present research was to determine the oxidation and hydrogenation behavior in the new Zr-2Mn alloy. The oxidation of alloy was performed at temperatures between 350^°C and 900^°C for 30 minutes. The hydrogen charging was made for 72 h at a current density 80 mA/cm². The charged samples were heat treated at 400^°C for 4 h to obtain a uniform hydrogen profile content across the sample. The oxidation resulted in an appearance of non-uniform oxide layers of thickness increasing with temperature. The surface damage was observed at higher temperatures 700 and 900^°C. After charging with hydrogen followed by annealing no hydrides were found. The observed effect is evidence that the oxide layers may form effective barriers against hydrogen diffusion even if they are partially degraded. The absence of hydrides or hydride cracking may be caused by an absence in Zr-Mn alloys of such phase precipitates, which may trap diffusive hydrogen and initiate the hydrides. The positive influence of manganese on the formation of the thick oxide layer and relative resistance to delayed hydride cracking may be attributed to its affinity of oxygen, the ability to form thick and compact oxide layers during oxidation, the formation of solid solution in zirconium and no precipitates enhancing nucleation of hydrides.

Słowa kluczowe

EN

zirconium alloy; nuclear reactor materials; oxidation; hydrogen embrittlement

PL

stopy cyrkonu; materiały reaktora jądrowego; utlenianie; kruchość wodorowa

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2018
• Tom: Vol. 18, nr 2(56)
• Strony: 37--48
• Opis fizyczny: Bibliogr. 29 poz., rys., wykr., tab.

Twórcy

autor

Zienkiewicz N.

• Gdansk University of Technology, Faculty of Mechanical Engineering, Department of Materials Science and Welding Engineering, 11/12 Narutowicza, 80-233 Gdańsk, Poland

autor

Paradowska J.

• Gdansk University of Technology, Faculty of Mechanical Engineering, Department of Materials Science and Welding Engineering, 11/12 Narutowicza, 80-233 Gdańsk, Poland

autor

Serbiński W.

• Gdansk University of Technology, Faculty of Mechanical Engineering, Department of Materials Science and Welding Engineering, 11/12 Narutowicza, 80-233 Gdańsk, Poland

autor

Gajowiec G.

• Gdansk University of Technology, Faculty of Mechanical Engineering, Department of Materials Science and Welding Engineering, 11/12 Narutowicza, 80-233 Gdańsk, Poland

autor

Hernik A.

• Gdansk University of Technology, Faculty of Mechanical Engineering, Department of Materials Science and Welding Engineering, 11/12 Narutowicza, 80-233 Gdańsk, Poland

autor

Zieliński A.

• Gdansk University of Technology, Faculty of Mechanical Engineering, Department of Materials Science and Welding Engineering, 11/12 Narutowicza, 80-233 Gdańsk, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).