ChemInform Abstract: NICKEL‐COBALT‐HYDROGEN AND NICKEL‐COBALT‐DEUTERIUM SYSTEMS UNDER HIGH PRESSURES OF GASEOUS HYDROGEN

Abstract

Der elektrische Widerstand von 4 Ni‐Co‐Legierungen (5, l0, 25 und 40 At.‐% Co) in H, oder D2 wird unter stationären Bedingungen bei 25°C und Drücken bis zu 28 kbar gemessen.

Hysteresis behaviour of electrical resistance of the Pd - H system measured by a gas-phase method

“…A similar rapid increase or decrease in R/R 0 corresponding to the formation or decomposition of the β-hydride phase, respectively, have been observed for a series of nickel alloy-hydrogen systems by the high-pressure technique of Baranowski [12] as a function of pressure at 25 • C, e.g. for Ni-Fe-H(D) [15,16], Ni-Co-H(D) [17], Ni-Mn-H [18], Ni-V-H(D) [19], Ni-Si-H(D) [19] and Ni-Cr-H [20] systems. However, for pure nickel a sharp decrease in the R/R 0 -value takes place because of the increase in ordering, as [H]/[Ni] → 1 at about 6.3 kbar which corresponds to the formation of the β-hydride phase [15].…”

Thermoelectric Power and Electrical Resistance of Hydrogenated Nickel Alloyed with Transition Metals (V, Fe, Co) between 80 and 300 K

“…In the case of this alloy system the resistance is not a monotonic function of the hydrogen pressure but is L-like [20]. When the pressure is reduced the resistance initially increases.…”

“…The results of measurements of the electrical resistance as a function of hydrogen pressure, at room temperature, can be found in [20], [16] and [21], respectively, while the results of similar measurements of thermoelectric power can be found in [2], [5] and [3], respectively.…”