Hydrogen degradation of pre-oxidized zirconium alloys

Adam Szoka; Grzegorz Gajowiec; Andrzej Zieliński; Waldemar Serbiński; Olive Jean-marc; Agnieszka Ossowska

doi:10.1515/adms-2017-0001

Hydrogen degradation of pre-oxidized zirconium alloys

Abstract

The presence of the oxide layers on Zr alloys may retard or enhance the hydrogen entry and material degradation, depending on the layer features. This research has been aimed to determine the effects of pre-oxidation of the Zircaloy-2 alloy at a different temperature on hydrogen degradation. The specimens were oxidised in laboratory air at 350°C, 700°C, and 900°C. After, some samples were tensed at 10-5 strain rate and simultaneously charged with hydrogen under constant direct voltage in 1 N sulfuric acid at room temperature. Other specimens were charged without any tension, then annealed at 400°C for 4 h and finally tensed at above strain rate. The SEM examinations were performed on the cross-sections and fracture faces of specimens. The obtained results demonstrate the effects of the oxide layer on the cathodic current and hydrogen entry, mechanical properties and the appearance of hydrides and fracture behaviour.

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Authors (6)

Adam Szoka
- Faculty of Mechanical Engineering
- Gdańsk University of Technology
Grzegorz Gajowiec dr inż.
- Faculty of Mechanical Engineering
- Gdańsk University of Technology
Andrzej Zieliński prof. dr hab. inż.
- Faculty of Mechanical Engineering
- Gdańsk University of Technology
Waldemar Serbiński dr hab. inż.
- Faculty of Mechanical Engineering
- Gdańsk University of Technology
Olive Jean-marc
Agnieszka Ossowska dr hab. inż.
- Faculty of Mechanical Engineering
- Gdańsk University of Technology

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DOI:: Digital Object Identifier (open in new tab) 10.1515/adms-2017-0001
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Category:: Articles
Type:: artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
Published in:: Advances in Materials Science no. 17, edition 1, pages 5 - 21,
ISSN: 1730-2439
Language:: English
Publication year:: 2017
Bibliographic description:: Szoka A., Gajowiec G., Zieliński A., Serbiński W., Jean-Marc O., Ossowska A.: Hydrogen degradation of pre-oxidized zirconium alloys// Advances in Materials Science. -Vol. 17., iss. 1 (2017), s.5-21
DOI:: Digital Object Identifier (open in new tab) 10.1515/adms-2017-0001
Verified by:: Gdańsk University of Technology