Method for protecting a metal surface
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United States of America Patent
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May 14, 1996
Grant Date -
N/A
app pub date -
Dec 7, 1993
filing date -
Jun 11, 1991
priority date (Note) -
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status (Latency Note)
Importance
Abstract
Protection of a metal surface is carried out by applying a coating of vitreous enamel to the surface so that the enamel forms a strong bond with the metal and then spraying a coating of an atomized protective metal on the enamel. Preferably a peening operation is carried out on the surface of the sprayed metal simultaneously with or immediately after the spraying of the metal. The method is particularly advantageous in protecting steel marine structures against corrosion and, where the protective metal is cupro-nickel, fouling by marine creatures. The vitreous enamel forms an electrically insulating layer preventing galvanic action between the steel and the cupro-nickel in the presence of sea water.
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