Hydrogen sensor

Details Hydrogen sensor Hydrogen sensor

G - Physics

01

N

G01N 21/77 (2006.01) G01N 31/00 (2006.01) G01N 31/22 (2006.01) G01N 21/47 (2006.01)

Patent

CA 2645592

A hydrogen sensor having a thin-film layer superimposed on a surface of substrate of a resin, etc. and further having a catalyst layer superimposed on the surface of the thin-film layer. When this catalyst layer is brought into contact with leakage hydrogen gas, the thin-film layer is rapidly hydrogenated by the catalytic activity thereof to thereby alter the optical reflectance of the thin-film layer. This hydrogen sensor has a protective film formed either between the substrate and the thin-film layer or on the surface of the catalyst layer or both.

L'invention concerne un capteur à hydrogène comprenant entre autres une couche de film mince superposée sur une surface d'un substrat en résine, ainsi qu'une couche catalytique superposée à la surface de la couche de film mince. Lors de la mise en contact de cette couche catalytique avec de l'hydrogène gazeux en fuite, la couche de film mince est rapidement hydrogénée par son activité catalytique, ce qui altère la réflectance optique de la couche de film mince. Ce capteur à hydrogène comporte un film protecteur formé soit entre le substrat et la couche de film mince, soit à la surface de la couche catalytique, soit les deux.

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