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Title: Hydrogen pressure-hydrogen content and electrical resistance-hydrogen content relationships of palladium and palladium alloy-hydrogen systems
Authors: Lewis, F.A
Kandasamy, K
McNicholl, R.-A
Tong, X.Q
Issue Date: May-1995
Abstract: Increasingly detailed findings of hydrogen pressure-hydrogen content-temperature [p-c(n)-T] relationships of the palladium-hydrogen system have continued to be reported and there have also been very substantial increases in p-c(n)-T information for palladium alloy-hydrogen systems, extending to a very wide range of alloy composition. One convenient technique for obtaining p-c(n)-T relationships at near 25 °C has involved derivations from electrode potential measurements using specimens with which sensitive changes of electrical resistance could be measured in conjunction. Discussion continues in regard to origins of hysteretic differences between forms of relationships obtained in courses of increases or decreases of hydrogen content, respectively. Associated discussion also continues concerning critical points defined with reference to suppression of hysteresis effects. In these regards there has been recent research interest in the hydrogen systems of palladium alternatively allied with either of pairs of elements in the same subgroup of transition metals, namely Ti, Zr; V, Nb and Sc, Y. Results have emphasized the key role of relative atomic dimensional and electronegative differences between the alloying elements in determining their modifying influences on p-c(n)-T relationships.
ISSN: 03603199
Appears in Collections:Physics

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