| 摘要 |
A device (10) for determining hydrogen flux through a metal membrane comprises two parts, top part (12) and a bottom part (11) respectively. The top part (12) is electrically insulated relative to the bottom part (11). The top part (2) which is a sheet of iron or steel, is provided with an interior palladium coating (13). The top part (12) constitutes together with the interior coating (13) a metal membrane which is selectively permeable to hydrogen. Within the bottom part (11) which is made of a metal, e.g. nickel, or nickel-coated steel, a metal oxide filling (14) is arranged. The bottom part (11) constitutes together with the metal oxide filling (14) a metal/metal oxide cathode. The device is also provided with an electrolyte solution (17) electrolytically communicating with the metal membrane (12, 13) and the metal/metal oxide cathode (11, 14). The device is adapted to be maintained in a substantially short-circuited condition by either a direct connection between the metal membrane and the metal/metal oxide cathode or a connection to a current measuring system with low internal impedance, such as a conventional am-meter. |
