To prevent galvanic corrosion, it is essential to use a form of galvanic isolation, such as non-conductive polymer washers and sleeves, to create a barrier between the stainless steel and the aluminum. Galvanic corrosion, also known as bimetallic corrosion, is not simple rust. It is a specific electrochemical reaction that occurs when three. How to prevent rust on photovoltaic b corrosion if wrong metals are used together. The life of a solar PV system is 25 years,therefore system installers must target a similar life span for the racking aterials. The. How to select highly corrosion-resistant stainless steel fasteners to ensure the stable operation of photovoltaic systems for more than 20 years? This article provides key guidelines such as material selection, anti-loosening solutions, and installation points to help solve the fastening problems. Good operations and maintenance is an important and effective way to reduce the impact of corrosion—especially from atmospheric sources like salt mist. Review the operations and maintenance table for detailed guidance. To understand them, you need to know a little more about both rust and galvanizing first. When an iron object stays wet while. It contains chromium, a component that forms a protective layer of chromium oxide on the surface, effectively shielding the internal structures from rust and degradation.