Galvanic corrosion is a common challenge in mixed-metal sculptures, where dissimilar metals react electrochemically, leading to deterioration. To preserve the integrity and aesthetics of such artworks, several proven methods can be employed.

1. Material Selection: Choose metals with similar electrochemical potentials to minimize galvanic reactions. For example, pairing stainless steel with titanium reduces corrosion risk compared to combining steel with copper.

2. Insulating Barriers: Apply non-conductive materials like rubber, plastic, or specialized coatings between dissimilar metals to prevent direct contact and electrochemical transfer.

3. Sacrificial Anodes: Attach a more reactive metal (e.g., zinc or magnesium) to the sculpture. This anode corrodes preferentially, protecting the primary metals.

4. Protective Coatings: Use paints, powder coatings, or sealants to shield metals from moisture and electrolytes, which accelerate corrosion.

5. Environmental Control: Limit exposure to humidity, saltwater, or pollutants by displaying sculptures indoors or using climate-controlled enclosures.

By combining these strategies, artists and conservators can significantly extend the lifespan of mixed-metal sculptures while maintaining their visual appeal. Regular inspections and maintenance further ensure long-term protection against galvanic corrosion.