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Researches on Fracture Surfaces Electrochemically Charged with Hydrogen
Advanced Materials Research, 2014The present paper deals with the morphological alteration of fracture surfaces determined by hydrogen in the case of hydrogen based steels, through electrochemical methods as compared with similar samples of surfaces electrochemically uncharged or with welding deposits created by means of cellulose coated electrodes.
Catalina Sorina Parfene +4 more
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Positron Annihilation in Copper Hydrogen-Charged Electrochemically
Russian Journal of Electrochemistry, 2004Atomic–electronic structure of copper foils is studied by a positron annihilation method directly in the course of electrochemical hydrogen sorption and after switching the current off. The shape of the curve of angular correlation of the annihilation radiation (ACAR) alters: the intensity of the broad Gaussian component, which is connected with the ...
I. I. Bardyshev, Yu. M. Polukarov
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Hydrogen Degradation Property of Electrochemically Charged Aluminum
MRS Proceedings, 2007AbstractDegradation property of aluminum due to hydrogen is studied. Hydrogen is introduced by electrolysis charge in aqueous solution with addition of 0.1 mass % NH4SCN as a hydrogen recombination poison. The amount of hydrogen and its existing state in the material is analyzed by hydrogen desorption curves measured by the thermal desorption ...
Hiroshi Suzuki +3 more
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Electrochemical Hydrogen Charge Characteristics of Metal Hydride Electrodes
Berichte der Bunsengesellschaft für physikalische Chemie, 1992AbstractA model for the cathode potential vs. time relationship during the galvanostatic charge process for metal hydride electrodes has been derived on the basis that the adsorbed hydrogen produced at the electrode surface by charge transfer of the Volmer reaction diffuses through the bulk electrodes, i.e., α, (α+β) and β phases during the charge ...
Y. Sakamoto, K. Kuruma, Y. Naritomi
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Colouration of oxidized niobium surfaces by electrochemical hydrogen charging
Journal of the Less Common Metals, 1991Abstract The colouration of oxidized niobium surfaces by electrochemical hydrogen charging was studied. Oxide films were formed on niobium sheet specimens by two different methods: anodic oxidation in an NaF-H 2 SO 4 solution and oxidation in air at 773 K.
Y. Hayashi, T. Miyakoshi, M. Masuda
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International Journal of Hydrogen Energy, 2019
Abstract Hydrogen depth profiles and microhardness of the electrochemically hydrogen-charged nanostructured bainitic steels (produced at two different transformation temperatures, i.e. 200 °C (NBS200) and 350 °C (NBS350)) were obtained using elastic recoil detection analysis (ERDA) technique and Vickers microhardness testing, respectively, and ...
Kazum, Oluwole +3 more
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Abstract Hydrogen depth profiles and microhardness of the electrochemically hydrogen-charged nanostructured bainitic steels (produced at two different transformation temperatures, i.e. 200 °C (NBS200) and 350 °C (NBS350)) were obtained using elastic recoil detection analysis (ERDA) technique and Vickers microhardness testing, respectively, and ...
Kazum, Oluwole +3 more
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Corrosion Reviews, 2015
Abstract Electrochemical hydrogen permeation tests using pure Fe sheet specimens were performed under various galvanostatic hydrogen charging conditions commonly applied to tensile test specimens used for evaluation of hydrogen embrittlement property to obtain a guideline for efficient hydrogen charging method for
Eiji Akiyama, Songjie Li
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Abstract Electrochemical hydrogen permeation tests using pure Fe sheet specimens were performed under various galvanostatic hydrogen charging conditions commonly applied to tensile test specimens used for evaluation of hydrogen embrittlement property to obtain a guideline for efficient hydrogen charging method for
Eiji Akiyama, Songjie Li
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Protection of Metals and Physical Chemistry of Surfaces, 2020
The relationship between the amount of hydrogen electrochemically introduced to Pd and the volume and linear sizes of the formed PdH system, as well as the intensity of cavitation that arises after saturation of Pd with hydrogen, has been determined. The results of the study allows one to describe the mechanism of origin of cavitation on PdH in spite ...
B. F. Lyakhov +6 more
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The relationship between the amount of hydrogen electrochemically introduced to Pd and the volume and linear sizes of the formed PdH system, as well as the intensity of cavitation that arises after saturation of Pd with hydrogen, has been determined. The results of the study allows one to describe the mechanism of origin of cavitation on PdH in spite ...
B. F. Lyakhov +6 more
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Can Electrochemical Charging Replace Hydrogen Gas Charging During Hydrogen Embrittlement Testing?
CONFERENCE 2024Abstract This paper presents the output from a study with the aim to correlate hydrogen gas charging and electrochemical charging for a X65 pipeline steel. The hydrogen uptake and diffusivity were evaluated via the permeation technique by employing both hydrogen gas charging and electrochemical charging.
Erik Koren +7 more
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The electrochemical charge-discharge properties of ZrCrNi hydrogen storage alloys
Journal of Alloys and Compounds, 1995Abstract Zr(Cr x Ni 1− x ) 2 (0.15 ⩽ x ⩽ 0.65) alloys were prepared by arc melting in an argon atmosphere. Through X-ray diffraction, the main crystal structure of the alloys was found to change from Laves phase cubic C15 to hexagonal C14 as the Cr to Ni ratio increased, and lattice parameters and hydrogen absorption capacities were mainly ...
Lei Yongquan +3 more
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