Cathodic Corrosion Protection
First Claim
1. A method for cathodically protecting and/or passivating a metal section in an ionically conductive material, comprising:
- providing an anode for communication of an electrical current to the metal section in the ionically conductive material;
a storage component of electrical energy with two poles for communicating electrical current generated by release of the electrical energy;
electrically connecting one pole to the metal section, electrically connecting the other pole to the anode and placing the anode in ionic contact with the ionically conductive material such that the electrical current can flow from the storage component through the electrical connection to the metal section thus reducing a total amount of electrical energy;
wherein replacement electrical energy is introduced into the storage component while in situ.
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Accused Products
Abstract
In a method for cathodically protecting and/or passivating a metal section in an ionically conductive material such as steel reinforcement in concrete or mortar, an impressed current or sacrificial anode communicates electrical current to the metal section and a storage component of electrical energy which can be a cell, battery or capacitor is provided as a component of the anode. The storage component can have replacement energy introduced by re-charging or replacing the component from an outside supply. Typically the cell or storage capacitor has an outer case which carries an anode material as an integral outer component.
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Citations
24 Claims
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1. A method for cathodically protecting and/or passivating a metal section in an ionically conductive material, comprising:
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providing an anode for communication of an electrical current to the metal section in the ionically conductive material; a storage component of electrical energy with two poles for communicating electrical current generated by release of the electrical energy; electrically connecting one pole to the metal section, electrically connecting the other pole to the anode and placing the anode in ionic contact with the ionically conductive material such that the electrical current can flow from the storage component through the electrical connection to the metal section thus reducing a total amount of electrical energy; wherein replacement electrical energy is introduced into the storage component while in situ. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for cathodically protecting and/or passivating a metal section in an ionically conductive material, comprising:
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providing a storage component with two poles; providing an anode for communication of an electrical current to the metal section in the ionically conductive material where the anode is of a material which is not sacrificial to the metal section; electrically connecting one pole to the metal section, electrically connecting the other pole to the anode and placing the anode in ionic contact with the ionically conductive material such that the electrical current can flow from the storage component through the electrical connection to the metal section; wherein the anode comprises at least part of an outer surface of an outer case of the storage component.
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22. A method for cathodically protecting and/or passivating a metal section in an ionically conductive material, comprising:
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providing an anode for communication of an electrical current to the metal section in the ionically conductive material; providing a capacitor for storage of electrical energy with two poles for communicating electrical current generated by release of the electrical energy; and electrically connecting one pole to the metal section, electrically connecting the other pole to the anode and placing the anode in ionic contact with the ionically conductive material such that the electrical current can flow from the capacitor through the electrical connection to the metal section.
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23. A method for cathodically protecting and/or passivating a metal section in an ionically conductive material, comprising:
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providing a stainless steel anode for communication of an electrical current to the metal section in the ionically conductive material; providing a storage component of electrical energy with two poles for communicating electrical current generated by release of the electrical energy; electrically connecting one pole to the metal section and electrically connecting the other pole to the anode and placing the stainless steel anode in ionic contact with the ionically conductive material such that the electrical current can flow from the storage component through the electrical connection to the metal section.
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24. A method for cathodically protecting and/or passivating a metal section in an ionically conductive material, comprising:
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providing an anode for communication of an electrical current to the metal section in the ionically conductive material; providing a storage component of electrical energy with two poles for communicating electrical current generated by release of the electrical energy; electrically connecting one pole to the metal section and electrically connecting the other pole to the anode and placing the anode in ionic contact with the ionically conductive material such that the electrical current can flow from the storage component through the electrical connection to the metal section; locating the storage component in a container; and after a period of operation, replacing the storage component in the container with a replacement storage component to provide additional electrical energy.
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Specification