Abstract
By using the electrolytic method, thin plate Palladium specimens are loaded with hydrogen to examine the relation between the lattice expansion and the hydrogen absorption rate, and the relation between the lattice expansion and bulk deformation of specimens at each hydrogen absorbing rate on one hydrogen absorption-desorption cycle. The behavior of the lattice expansion on the hydrogen absorbing rate can be obtained by X-ray diffraction analyses. It is noted that the lattice size increases quickly with increasing hydrogen absorbing rate (H/Pd) up to 0.2, however, above the rate the lattice size keeps constant value. The expansion rate of the Pd plate specimen agree well with the lattice expansion rate in longitudinal and width direction of the specimens, though in thickness direction the expansion rate is about 5 times lager than other directions.
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