| 摘要 |
A method is described of making a catalytic combustion type gas detector, the sensitivity of which to alcohol vapors and to tobacco fumes is decreased by utilizing a mixture of powders. The mixed powders is composed of at least one metal oxide selected from TiO2, ZrO2, Y2O3, HfO2, CeO2, La2O3, NiO Cr2O3 and a substance which presents an N-type semiconductor characteristic by gas adsorption. The mixture is coated directly on a wire coil of Pt or the like and a current is applied to the metal wire coil in an oxidizing atmosphere to sinter the coated mixed powder thereon. |
