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AssigneeDeNora S.p.A.
InventorsClaudio Mantegazza, Emilio Zioni
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The invention describes a method for applying an electrocatalytic or a protective coating to a metal substrate or repairing a damaged area of the same, consisting in a thermal treatment of a precursor of said catalytic coating by means of a hot air jet from a blower. The temperature of the substrate is locally controlled by means of surface temperature sensors or by an infrared measuring system. The metal substrate may be an exhausted electrode structure, in which case the reactivation is easily carried out at the plant site without any need of sending the structure to the producer. The method of the invention is particularly useful for reactivating anodes for oxygen evolution as it permits to avoid the risky procedure of detaching the anode from the current conductor.
A method for applying an electrocatalytic coating to a metal substrate comprising applying a precursor of said electrocatalytic coating to a damaged area of the metal substrate previously provided with a coating and decomposing said precursor by means of a thermal treatment, said thermal treatment being carried out in correspondence of said damaged area of the metal substrate by means of a hot air jet coming from a gun or a blower.
Dependencies are inferred from the claim text.