Method for applying a coating to a flange of an electrochemical cell or repairing a coating applied to the same
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United States of America Patent
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Sep 11, 2001
Grant Date -
N/A
app pub date -
Dec 21, 1999
filing date -
Jul 10, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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.
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