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AssigneesNippon Kokan Kabushiki Kaisha, Osaka Oxygen Industries Ltd., Shinagawa Shirorenga Kabushiki Kaisha
InventorsYutaka Tsuchida, Mikio Mugita, Yutaka Nakano, Naoaki Sasaki, Kenki Ishizawa, Hiroshi Kuroshima
Estimating the term…
A sensor comprising a solid electrolytic having oxygen ion conductivity to measure the amount of oxygen in molten metal by forming an oxygen concentration cell in which the solid electrolytic element is coated on the surface thereof with mixture which is composed of Al.sub.2 O.sub.3 powders and metallic fluoride powders such as MgF.sub.2 or CaF.sub.2. The present coating does not exfoliate at immersing the sensor into the molten metal and fully maintains wettability of the solid electrolytic element 1 and the molten metal, and since it does not hinder oxygen ion conductivity of the solid electrolytic element 1, the sensor rapidly reaches up to the thermal and electrical equilibrium state, thereby to obtain satisfactory emf wave.
In an oxygen sensor for measuring the oxygen content of molten metal comprising a solid ion conductive electrolyte having an inner and an outer surface, said solid electrolyte having a protective coating containing a binding agent on the outer surface thereof intended to be immersed in the molten metal being measured,
Dependencies are inferred from the claim text.