Japan Atomic Energy Agency

Katsuyoshi Takano

Masahito Yoshikawa

Shunya Yamamoto

Aichi Inouye

Masaki Sugimoto

An optical hydrogen gas detecting membrane is prepared by sequentially depositing a platinum oxide layer and a catalytic metal layer on a transparent substrate, such as quartz glass, by vapor deposition such as the sputtering method. Palladium or platinum is used as the catalytic metal layer.

Hydrogen gas detecting membrane

A hydrogen gas detecting material, which changes in light absorption characteristics when exposed to an atmosphere containing hydrogen, and the coating method are characterized in that (1) the principal component of the hydrogen gas detecting material is tungsten oxide, (2) palladium is deposited on the surface of the tungsten oxide, (3) the tungsten oxide is coated on a substrate by a sputtering method involving a controlled oxygen pressure, and (4) the temperature of the substrate during coating with the tungsten oxide is room temperature (20&#xb0; C.).

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Takasaki, Japan

Katsuyoshi Takano