Method to reduce corrosion of aluminum alloys exposed to seawater
View Patent ↗A method is taught to alleviate some of the expected seawater corrosion of aluminum alloy fuel tanks originating from the chlorides present in seawater through the use of a dicarboxylic acid additive that is added to the aluminum alloy fuel tank when seawater enters the tank.
1. A method for reducing corrosion of aluminum alloys exposed to seawater comprising:
providing a dicarboxylic organic acid;
reacting the dicarboxylic organic acid to make a salt of the dicarboxylic organic acid;
adding 2-nitrodiphenylamine at a percentage of 6.25% to the salt of the dicarboxylic organic acid;
exposing the mixture of 2-nitrodiphenylamine and the salt of dicarboxylic organic, acid to the interior surface of an aluminum alloy fuel tank for use with Otto fuel.
2. The method of claim 1 wherein the dicarboxylic organic acid is sebacic acid.
3. The method of claim 2 wherein the salt of dicarboxylic organic acid is zinc monohydrate sebacate.
4. The method of claim 2 wherein the salt of dicarboxylic organic acid is aluminum monohydrate sebacate.
5. The method of claim 1 wherein the step of exposing the mixture of 2-nitrodiphenylamine and the salt of dicarboxylic organic acid to the interior surface of an aluminum alloy fuel tank comprises adding the mixture of 2-nitrodiphenylamine and the salt of dicarboxylic organic acid to a quantity of Otto fuel for use in said aluminum alloy fuel tank.
6. The method of claim 1 wherein the step of exposing the mixture of 2-nitrodiphenylamine and the salt of dicarboxylic organic acid to the interior surface of an aluminum alloy fuel tank comprises:
combining the mixture of 2-nitrodiphenylamine and the salt of dicarboxylic organic acid with a chemically neutral grease; and
applying the combined chemically neutral grease and mixture of 2-nitrodiphenylamine and the salt of dicarboxylic organic acid to the interior surface of the aluminum alloy fuel tank.
7. The method of claim 1 wherein the step of exposing the mixture of 2-nitrodiphenylamine and the salt of dicarboxylic organic acid to the interior surface of an aluminum alloy fuel tank comprises:
combining the mixture of 2-nitrodiphenylamine and the salt of dicarboxylic organic acid with a chemically neutral liquid; and
spraying the combined chemically neutral liquid and mixture of 2-nitrodiphenylamine and the salt of dicarboxylic organic acid to the interior surface of the aluminum alloy fuel tank.
8. The method of claim 1 wherein the step of exposing the mixture of 2-nitrodiphenylamine and the salt of dicarboxylic organic acid to the interior surface of an aluminum alloy fuel tank comprises applying the mixture of 2-nitrodiphenylamine and the salt of dicarboxylic organic acid to the interior surface of the aluminum alloy fuel tank through cathodic application.
9. A method for reducing corrosion of aluminum alloys exposed to seawater comprising:
providing a dicarboxylic organic acid;
reacting the dicarboxylic organic acid to make an ester of the dicarboxylic organic acid;
adding 2-nitrodiphenylamine at a percentage of 6.25% to the ester of the dicarboxylic organic acid;
exposing the mixture of 2-nitrodiphenylamine and the salt of dicarboxylic organic acid to the interior surface of an aluminum alloy fuel tank for use with Otto fuel.
10. The method of claim 9 wherein the dicarboxylic organic acid is sebacic acid.
11. The method of claim 10 wherein the ester of dicarboxylic organic acid is butyl monohydrate sebacate.
12. The method of claim 9 wherein the step of exposing the mixture of 2-nitrodiphenylamine and the ester of dicarboxylic organic acid to the interior surface of an aluminum alloy fuel tank comprises adding the mixture of 2-nitrodiphenylamine and the ester of dicarboxylic organic acid to a quantity of Otto fuel for use in said aluminum alloy fuel tank.
13. The method of claim 9 wherein the step of exposing the mixture of 2-nitrodiphenylamine and the ester of dicarboxylic organic acid to the interior surface of an aluminum alloy fuel tank comprises:
combining the mixture of 2-nitrodiphenylamine and the ester of dicarboxylic organic acid with a chemically neutral grease; and
applying the combined chemically neutral grease and mixture of 2-nitrodiphenylamine and the ester of dicarboxylic organic acid to the interior surface of the aluminum alloy fuel tank.
14. The method of claim 9 wherein the step of exposing the mixture of 2-nitrodiphenylamine and the ester of dicarboxylic organic acid to the interior surface of an aluminum alloy fuel tank comprises:
combining the mixture of 2-nitrodiphenylamine and the ester of dicarboxylic organic acid with a chemically neutral liquid; and
spraying the combined chemically neutral liquid and mixture of 2-nitrodiphenylamine and the ester of dicarboxylic organic acid to the interior surface of the aluminum alloy fuel tank.
15. The method of claim 9 wherein the step of exposing the mixture of 2-nitrodiphenylamine and the ester of dicarboxylic organic acid to the interior surface of an aluminum alloy fuel tank comprises applying the mixture of 2-nitrodiphenylamine and the ester of dicarboxylic organic acid to the interior surface of the aluminum alloy fuel tank through cathodic application.