Hydrogen Sensors Using Pd-Based Metallic Glassy Alloys

Abstract

Pd-based metallic glassy alloys have been investigated as materials for the hydrogen sensors. We prepared thin films of Pd-Cu-Si alloy known as typical metallic glassy alloys by r. f. magnetron sputtering method. And then, we examined their sensitivity to hydrogen by measuring the change of electric resistance of thin films when they were exposed to hydrogen gases of various concentrations at 50°C and 100°C. As a result, Pd-Cu-Si metallic glassy alloys showed excellent property as materials for the hydrogen sensors.