Electrolytic corrosion, also known as galvanic corrosion, is a common challenge in mixed-metal sculptures where dissimilar metals interact in the presence of an electrolyte (e.g., moisture). To preserve the integrity and aesthetics of such artworks, consider these proven prevention methods:

1. Material Compatibility: Choose metals with similar electrochemical properties to minimize galvanic reactions. Refer to the galvanic series chart to pair compatible metals.

2. Insulation Techniques: Use non-conductive barriers like rubber gaskets, plastic washers, or specialized coatings to physically separate dissimilar metals and prevent direct contact.

3. Protective Coatings: Apply corrosion-resistant coatings (e.g., powder coating, anodizing, or clear lacquer) to shield metal surfaces from moisture and environmental contaminants.

4. Sacrificial Anodes: Attach a more reactive metal (e.g., zinc or magnesium) to the sculpture. This anode corrodes preferentially, protecting the primary metals—a technique often used in marine environments.

5. Environmental Control: Limit exposure to humidity, saltwater, or pollutants by displaying sculptures indoors or using climate-controlled enclosures. Regular cleaning to remove corrosive agents is also critical.

6. Dielectric Unions: For sculptures with fluid-filled components, install dielectric unions to break electrical continuity between metals while maintaining structural integrity.

By combining these strategies, artists and conservators can significantly extend the lifespan of mixed-metal sculptures while maintaining their visual appeal. Regular inspections and prompt repairs of damaged coatings further enhance protection against electrolytic degradation.