What galvanic corrosion risks arise when combining aluminum with stainless steel in outdoor sculptures?
When aluminum and stainless steel are combined in outdoor sculptures, galvanic corrosion becomes a significant risk due to their differing electrochemical potentials. In the presence of an electrolyte like rainwater or humidity, aluminum (the more anodic metal) corrodes faster when electrically connected to stainless steel (the more cathodic metal). This accelerated degradation can weaken structural integrity and cause aesthetic damage. To mitigate this, use insulating materials like rubber gaskets or protective coatings, or opt for compatible metals. Regular maintenance and drainage design also help reduce moisture exposure, prolonging the sculpture's lifespan. Understanding these risks ensures durable and visually preserved outdoor art.
