Interactions of hydrogen in copper studied by internal friction technique

Internal friction (IF) in electrochemically hydrogen-charged copper was studied in the temperature range of 80–500 K. A distinct peak of relaxation caused by hydrogen was observed in the vicinity of 130 K at the frequency of about 1 Hz. The observed peak has an enthalpy and pre-exponential factor of...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2004-04, Vol.370 (1), p.218-221
Hauptverfasser:	Aaltonen, P., Nevdacha, V., Tarasenko, O., Yagodzinskyy, Y., Hänninen, H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Copper Exact sciences and technology Gas filled porosity Hasiguti peaks Hydrogen Internal friction Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy Other mechanical properties
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Beschreibung
Zusammenfassung:	Internal friction (IF) in electrochemically hydrogen-charged copper was studied in the temperature range of 80–500 K. A distinct peak of relaxation caused by hydrogen was observed in the vicinity of 130 K at the frequency of about 1 Hz. The observed peak has an enthalpy and pre-exponential factor of relaxation 0.28 eV and 4.6×10 −13 s, respectively. Effects of copper microstructure and oxygen content on the hydrogen internal friction peak in copper were studied and discussed.
ISSN:	0921-5093 1873-4936
DOI:	10.1016/j.msea.2003.04.003