The Electrical Resistance of Palladium and Palladium–Gold Alloy (50 wt% Au and Pd) in Gaseous Hydrogen up to 24000 at at 25 °C

The outline of a high‐pressure advice for gaseous hydrogen as a double piston‐cylinder system is given. Any contact between the gaseous volume and the pressure‐transmitting liquid is avoided. The electrical resistance of Pd and Pd–Au (50 wt%) foils was measured at (25 ± 0.1) °C up to 24000 at of gaseous hydrogen. A linear relationship of relative electrical resistance versus the logarithm of the hydrogen fugacity is observed. The relative electrical resistance of Pd as function of the atomic ratio H:Pd is estimated.