The AB(2) and AB(5) types of hydrogen storage alloy have been investig
ated for meeting the requirements of making a metal hydride compressor
with some characteristics applied in the cryogenic technology. Using
this compressor, a cooling capacity of 0.4 W at 25 K was obtained with
a Joule-Thomson microcooler, and 1.35 W at 77 K with a small G-M cool
er was also tested.