Do Sun Ray Solar Copper Aluminum absorber plates corrode?
A. Generally the dissimilar metals have a different electric charge, in this case copper, a noble metal with a positive charge (cathode), and aluminum, a less noble metal, with a negative charge (anode). If the two materials are in contact with a corrosive electrolyte like the water in car battery, corrosion will occur on the least noble material, the aluminum (anode) and decrease on the noblest metal, the copper (cathode). Similar to an anode rod in a water heater. This corrosion is called galvanic corrosion. This is why Sun Ray Solar Copper Aluminum absorber plates do not corrode: 1. The two metals do not share corrosive electrolyte. The water is flowing inside the copper tubing and is not in direct contact with the aluminum. 2. The aluminum used in Sun Ray Absorbers is painted prior to its assembly to the copper tubing to create an electrical insulation between the two metals, eliminating an electrical current transfer. This is why Sun Ray Solar Copper Aluminum absorber plates do no
