Metals

Abstract

Since the Bronze Age, man has used metallic ores and converted them into metals for utilitarian and decorative purposes. Iron is one of the metals in collections that are most susceptible to moisture and humidity. Silver also tarnishes rapidly in a polluted urban environment. When coming into contact with metals it is always advisable to wear gloves. Corrosion involves three principal components: humidity, temperature and air. Metals should never be washed or cleaned by unqualified persons. Polishing with motor driven machines and commercial polishing pastes should be completely avoided. There is a wide array of testing equipment to analyse metal artefacts.