Corrosion of Metal Artifacts Displayed in Outdoor Environments
This article describes the various environmental factors that cause corrosion on metal artifacts. These include water, temperature fluctuations, pollutants, local conditions of acidity or alkalinity, vegetation, and animals. The corrosion processes experienced by five common metals used in outdoor artifacts are discussed. The metals include copper alloys, iron alloys, lead, zinc, and aluminum. The article discusses conservation and preservation strategies for these metals. It also provides a discussion on conservation strategies for gold.