Anti-fouling coating for turbomachinery
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United States of America Patent
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Dec 12, 2000
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app pub date -
Jul 28, 1999
filing date -
Feb 5, 1990
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Abstract
A method for coating turbomachinery having a metal surface to prevent fouling, the steps of the method being applying to the surface a first slurry containing an acidic aqueous medium containing galvanically active material and phosphate ions, thereby forming a galvanically sacrificial first layer, curing the first layer, applying to the cured first layer an aqueous non-conductive second slurry containing inorganic phosphate or silicate ions, thereby forming a non-conductive second layer, curing the second layer, applying to the cured second layer a liquid sealer composition containing a thermally stable organic polymer and fluorocarbon, thereby forming a top layer, and curing the top layer.
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