Hydrogen Absorption in Pd–Ag Systems: A TPD and Electrical Resistivity Study
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Hydrogen retention in Pd–Ag (silver 21 wt. %) thin foil has been tested by means of temperature-programmed desorption (TPD) in the temperature range 25–200 °C and compared to the resistivity measurements for the purpose of explaining the characteristic S-shaped resistivity curve and its minimum observed in the same temperature range. The TPD results indicated that the highest uptake of hydrogen was between 65 °C and 105 °C, with a maximum at ~85 °C. Furthermore, in all examined cases, the hydrogen desorption peak was between 140 °C and 180 °C. The resistivity measurements in argon, hydrogen, and vacuum allowed us to examine the influence of hydrogen on the resistivity of a Pd–Ag alloy. The results showed evidence of two kinds of hydrides: (1) a weak absorption at low temperature (T < 70 °C) with the hydrogen present mainly in tetrahedral sites, and (2) a strong absorption up to 150 °C with the hydrogen present mainly in octahedral sites. The behaviour of the electrical resistivity and ...the minimum between 90 °C and 110 °C can be explained by the two kinds of hydrogen uploaded into the metal lattice.
Keywords:
Pd-Ag alloy / hydrogen / temperature-programmed desorption / electrical resistivitySource:
Materials, 2019, 12, 19, 3160-Funding / projects:
- Physics and Chemistry with Ion Beams (RS-45006)
DOI: 10.3390/ma12193160
ISSN: 1996-1944
PubMed: 31569645
WoS: 000493308500109
Scopus: 2-s2.0-85073760217
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VinčaTY - JOUR AU - Pozio, Alfonso AU - Jovanović, Zoran M. AU - Tosti, Silvano PY - 2019 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8593 AB - Hydrogen retention in Pd–Ag (silver 21 wt. %) thin foil has been tested by means of temperature-programmed desorption (TPD) in the temperature range 25–200 °C and compared to the resistivity measurements for the purpose of explaining the characteristic S-shaped resistivity curve and its minimum observed in the same temperature range. The TPD results indicated that the highest uptake of hydrogen was between 65 °C and 105 °C, with a maximum at ~85 °C. Furthermore, in all examined cases, the hydrogen desorption peak was between 140 °C and 180 °C. The resistivity measurements in argon, hydrogen, and vacuum allowed us to examine the influence of hydrogen on the resistivity of a Pd–Ag alloy. The results showed evidence of two kinds of hydrides: (1) a weak absorption at low temperature (T < 70 °C) with the hydrogen present mainly in tetrahedral sites, and (2) a strong absorption up to 150 °C with the hydrogen present mainly in octahedral sites. The behaviour of the electrical resistivity and the minimum between 90 °C and 110 °C can be explained by the two kinds of hydrogen uploaded into the metal lattice. T2 - Materials T1 - Hydrogen Absorption in Pd–Ag Systems: A TPD and Electrical Resistivity Study VL - 12 IS - 19 SP - 3160 DO - 10.3390/ma12193160 ER -
@article{ author = "Pozio, Alfonso and Jovanović, Zoran M. and Tosti, Silvano", year = "2019", abstract = "Hydrogen retention in Pd–Ag (silver 21 wt. %) thin foil has been tested by means of temperature-programmed desorption (TPD) in the temperature range 25–200 °C and compared to the resistivity measurements for the purpose of explaining the characteristic S-shaped resistivity curve and its minimum observed in the same temperature range. The TPD results indicated that the highest uptake of hydrogen was between 65 °C and 105 °C, with a maximum at ~85 °C. Furthermore, in all examined cases, the hydrogen desorption peak was between 140 °C and 180 °C. The resistivity measurements in argon, hydrogen, and vacuum allowed us to examine the influence of hydrogen on the resistivity of a Pd–Ag alloy. The results showed evidence of two kinds of hydrides: (1) a weak absorption at low temperature (T < 70 °C) with the hydrogen present mainly in tetrahedral sites, and (2) a strong absorption up to 150 °C with the hydrogen present mainly in octahedral sites. The behaviour of the electrical resistivity and the minimum between 90 °C and 110 °C can be explained by the two kinds of hydrogen uploaded into the metal lattice.", journal = "Materials", title = "Hydrogen Absorption in Pd–Ag Systems: A TPD and Electrical Resistivity Study", volume = "12", number = "19", pages = "3160", doi = "10.3390/ma12193160" }
Pozio, A., Jovanović, Z. M.,& Tosti, S.. (2019). Hydrogen Absorption in Pd–Ag Systems: A TPD and Electrical Resistivity Study. in Materials, 12(19), 3160. https://doi.org/10.3390/ma12193160
Pozio A, Jovanović ZM, Tosti S. Hydrogen Absorption in Pd–Ag Systems: A TPD and Electrical Resistivity Study. in Materials. 2019;12(19):3160. doi:10.3390/ma12193160 .
Pozio, Alfonso, Jovanović, Zoran M., Tosti, Silvano, "Hydrogen Absorption in Pd–Ag Systems: A TPD and Electrical Resistivity Study" in Materials, 12, no. 19 (2019):3160, https://doi.org/10.3390/ma12193160 . .