| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a small-sized inexpensive hydrogen gas sensor capable of detecting hydrogen gas selectively and easily. <P>SOLUTION: In this hydrogen gas sensor, hydrogen gas is detected by embrittlement of a sensor element caused by hydrogen absorption by using a hydrogen absorbing amorphous alloy as the sensor element. The sensor element is ruptured by absorbing hydrogen gas, and the hydrogen gas can be detected by detecting the rupture. A mechanical load is preferably applied to the sensor element so as to be ruptured by hydrogen gas absorption. The sensor 10 is preferably equipped with the sensor element 12 including the hydrogen absorbing amorphous alloy and embrittled by the hydrogen absorption, a support 14 for supporting the sensor element and applying the mechanical load to the sensor element so that the sensor element is embrittled and ruptured by the hydrogen gas absorption, and two electrodes 16a, 16b provided in the connected state to the sensor element or an energization part integrated with the sensor element. The sensor element is preferably hydrogen absorbing metal glass. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
