A corrosion resistant bimetal includes a part and one or more sacrificial anodes. The part includes a metal component that is susceptible to corrosion. The sacrificial anodes consists of an attachment to the part through a metallic bond between the metal component and the sacrificial anode to form a crystalline solid that includes the sacrificial anode and the metal component of the part.

A corrosion resistant bimetal includes a part and one or more sacrificial anodes. The part includes a metal component that is susceptible to corrosion. The sacrificial anodes consists of an attachment to the part through a metallic bond between the metal component and the sacrificial anode to form a crystalline solid that includes the sacrificial anode and the metal component of the part.

An assembly for a vehicle having reduced galvanic corrosion includes a first component defining at least one interface region that includes a carbon-fiber reinforced polymeric composite (CFRP) and a first material present in the at least one interface region and having a first electrochemical potential. A second component has a second material and is in contact with the at least one interface region of the first component. The second material has a second electrochemical potential different than the first electrochemical potential. In this manner, in the presence of an electrolyte the first material may be either less noble than the second material and serve as a sacrificial material or alternatively more noble to the second material reducing a driving force for corrosion. Methods of reducing galvanic corrosion in an assembly (e.g., for a vehicle) are also provided.

A load arrangement is provided for powering a load on a surface (30) of a marine structure (50) exposed to a liquid (10). The load arrangement has a carrier (100) and a conductor arrangement (110) arranged on the surface of the marine structure and coupled to one pole of a power source (1). The other pole is coupled to the liquid. The carrier has a back surface (102) to cover part of the conductor arrangement and the surface (30) of the marine structure. A load (20) in the carrier receives supply current from the power source via a front electrode (130) arranged for coupling to the liquid, and a back electrode (120) at the back surface arranged for coupling to the conductor arrangement. The load may be an UV-C LED for emitting anti-fouling light.

A load arrangement is provided for powering a load on a surface (30) of a marine structure (50) exposed to a liquid (10). The load arrangement has a carrier (100) and a conductor arrangement (110) arranged on the surface of the marine structure and coupled to one pole of a power source (1). The other pole is coupled to the liquid. The carrier has a back surface (102) to cover part of the conductor arrangement and the surface (30) of the marine structure. A load (20) in the carrier receives supply current from the power source via a front electrode (130) arranged for coupling to the liquid, and a back electrode (120) at the back surface arranged for coupling to the conductor arrangement. The load may be an UV-C LED for emitting anti-fouling light.

Provided are a system and method for reinforcing and protecting a reinforced concrete structure in which a reinforced concrete structure is divided and corrosion factors of the divided cross-sectional regions are monitored to automatically supply a protection current to each of the divided cross-sectional regions, thereby actively performing protection of the reinforced concrete structure, and also, by adjusting the level of a protection current according to the progression of corrosion in each divided cross-sectional region of the reinforced concrete structure, power consumption required for protection is optimized and protection is effectively performed, and also by disposing a carbon fiber textile grid in the surface of the reinforced concrete structure to be employed as both a reinforcement member and an anode of the reinforced concrete structure, microcracking which may occur in concrete curing is inhibited and thus permeation of moisture or a chloride into the surface thereof is prevented.

Provided are a system and method for reinforcing and protecting a reinforced concrete structure in which a reinforced concrete structure is divided and corrosion factors of the divided cross-sectional regions are monitored to automatically supply a protection current to each of the divided cross-sectional regions, thereby actively performing protection of the reinforced concrete structure, and also, by adjusting the level of a protection current according to the progression of corrosion in each divided cross-sectional region of the reinforced concrete structure, power consumption required for protection is optimized and protection is effectively performed, and also by disposing a carbon fiber textile grid in the surface of the reinforced concrete structure to be employed as both a reinforcement member and an anode of the reinforced concrete structure, microcracking which may occur in concrete curing is inhibited and thus permeation of moisture or a chloride into the surface thereof is prevented.

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 ionic 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. A current limiter is provided which prevents excess current draining the supply. This can be a semi-conductive device such as a transistor or diode is connected in the path from the anode to the metal section to limit the cathodic protection current to a value of the order of 1 milliamp. When a diode or similar device is used the current can be limited to the reverse leakage current of the diode.

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 ionic 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. A current limiter is provided which prevents excess current draining the supply. This can be a semi-conductive device such as a transistor or diode is connected in the path from the anode to the metal section to limit the cathodic protection current to a value of the order of 1 milliamp. When a diode or similar device is used the current can be limited to the reverse leakage current of the diode.

A cathodic protection system includes a vessel for containing a fluid or a mixture of fluids, a plurality of anodes positioned inside the vessel, an encapsulant encapsulating the plurality of anodes, the encapsulant being a wax repellant material that is sufficiently porous to allow ions to pass therethrough, and an impressed current source electrically connected to each of the anodes and the vessel. The impressed current source produces a continuous high current output, and the vessel acts as a cathode when current is applied from the impressed current source. The anodes are monitored and controlled from outside of the vessel using one or more adjustable resistors, which are installed in a junction box located either inside or outside the vessel. The resistors are configured to adjust the individual anode current output based upon a predetermined cathodic protection criteria.