| 摘要 |
A hydrogen permeation/separation thin membrane including an Ni-Ti-Nb alloy, the Ni-Ti-Nb alloy being a cast foil material obtained by roll quenching and having a thickness of 0.07 mm or less, which has been subjected to a refining heat treatment, and the Ni-Ti-Nb alloy having the following composition (a) and alloy structure (b): (a) a composition consisting of 10 to 47 atomic% ofNb, 20 to 52 atomic% of Ti, and a remainder containing 20 to 48 atomic% of Ni and inevitable impurities; and (b) an alloy structure where fine particles of an Nb-based solid solution alloy formed of a solid solution of Ni and Ti in Nb are dispersed in a microstructure made of an Ni-Ti(Nb) intermetallic compound formed of a solid solution of an Ni-Ti intermetallic compound, in which part of Ti thereof is replaced by Nb; and a hydrogen permeation/separation thin membrane including an Nb-Ti-Ni alloy, the Nb-Ti-Ni alloy being a cast foil material obtained by roll quenching and having a thickness of 0.07 mm or less, which has been subjected to a refining heat treatment, and the Nb-Ti-Ni alloy having the following composition (a') and alloy structure (b'): (a') a composition consisting of 10 to 32 atomic% ofNi, 15 to 33 atomic% of Ti, and a remainder containing 48 to 70 atomic% of Nb and inevitable impurities; and (b') an alloy structure where fine particles of an Ni-Ti(Nb) intermetallic compound formed of a solid solution of an Ni-Ti intermetallic compound, in which part of Ti thereof is replaced by Nb, are dispersed in a microstructure made of an Nb-based solid solution alloy formed of a solid solution of Ni and Ti in Nb. |
