Mg-based amorphous hydrogen storage alloy, hydrogen sensitive body, and hydrogen sensor using it

摘要

PROBLEM TO BE SOLVED: To provide a substance adequate for a hydrogen inductor for obtaining a hydrogen gas sensor capable of eliminating the need for exerting a high temperature to the hydrogen inductor in measuring a hydrogen concentration in a gaseous phase or liquid phase, eliminating the need for a diaphragm and electrolyte, preventing their deterioration and achieving miniaturization and weight reduction.;SOLUTION: The Mg-based amorphous hydrogen occluding alloy is expressed by a composition formula Mg_xPd_100-x (70≤x≤91, more preferably 88≤x≤91). The Mg-based amorphous hydrogen occluding alloy not only has hydrogen occlusion performance but has the characteristic that its electric resistance value changes by occlusion of the hydrogen and is usable for storage applications of hydrogen. Besides, the alloy is usable for measurement of the hydrogen by detecting a change in the electric resistance value when making contact with the hydrogen.;COPYRIGHT: (C)2005,JPO&NCIPI