Methods for creating a zinc-metal oxide layer in metal components for corrosion resistance
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United States of America Patent
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Oct 5, 2021
Grant Date -
May 4, 2017
app pub date -
Oct 27, 2016
filing date -
Oct 29, 2015
priority date (Note) -
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Abstract
The present invention provides a method for manufacturing a finished metal object or product having a corrosion resistant layer integral to or within a top portion of at least one of its surfaces that would be exposed to a corrosive environment. In one embodiment, the method for manufacturing is directed to a finished metal tubing product having a corrosion resistant layer within its inside surface that is exposed to a fluid and wherein the corrosion resistant layer is a zinc-metal oxide layer, such as a zinc-chromium oxide layer, or a zinc-mixed metal oxide layer. In addition to methods of manufacturing, the present invention provides finished metal objects or products having a corrosion resistant layer integral to or within a top portion of at least one surfaces that would be exposed to a corrosive environment.
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