http://www.cnr.it/ontology/cnr/individuo/prodotto/ID22167
Hydrogen Diffusion in the Laves-Phase Compound TiCr1.78 (Articolo in rivista)
- Type
- Label
- Hydrogen Diffusion in the Laves-Phase Compound TiCr1.78 (Articolo in rivista) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.msea.2008.09.108 (literal)
- Alternative label
G. Mazzolai; B. Coluzzi; A. Biscarini; F.M. Mazzolai; A. Tuissi; F. Agresti; G. Principi; S. Lo Russo (2009)
Hydrogen Diffusion in the Laves-Phase Compound TiCr1.78
in Materials science & engineering. A, Structural materials: properties, microstructure and processing
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- G. Mazzolai; B. Coluzzi; A. Biscarini; F.M. Mazzolai; A. Tuissi; F. Agresti; G. Principi; S. Lo Russo (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- In Press, Accepted Manuscript, Available online 9 March 2009 (literal)
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- University of Perugia, Department of Physics, Via A. Pascoli 5, 06100 Perugia, Italy;
Institute for Energy and Interphases, CNR-IENI, C.so Promessi Sposi, 29, Lecco, Italy;
University of Padua, Dept. of Mech. Eng., via Marzolo 8, 35131 Padua, Italy;
University of Padua, Physics Dept., via Marzolo 8, 35131 Padua, Italy;
Università Telematica e-Campus, Via Isimbardi 10, Novedrate (Co), Italy (literal)
- Titolo
- Hydrogen Diffusion in the Laves-Phase Compound TiCr1.78 (literal)
- Abstract
- The temperature dependence of the Young's modulus and of the internal friction (IF) has been investigated between 80 and 300 K at acoustical frequencies in the hexagonal (C14) Laves-phase TiCr1.78 charged with hydrogen. In this compound H occupies tetrahedral interstitial sites which are grouped in interlinked hexagons. A mechanical relaxation has been found at around 120 K (f = 5.4 kHz), which appears to be due to tunnelling transitions of delocalized H from one hexagon to the other. The rate of H absorption has been investigated at high temperature (660-1200 K) and the H diffusion coefficient has been derived from the pressure measurement as a function of time. A cumulative Arrhenius plot of IF and absorption diffusion data exhibits a non-exponential behaviour, which is due to a change in the diffusion mechanism from over-barrier hopping at high temperature to phonon-assisted tunnelling at low temperature. (literal)
- Prodotto di
- Autore CNR
- Insieme di parole chiave
Incoming links:
- Prodotto
- Autore CNR di
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
- Insieme di parole chiave di