The cultural origin and background of cast copper sculpture techniques and bronze forging art are the main branches of sculpture art. On the basis of inheriting the traditional copper art elements and fabrication skills, the cast copper sculpture in the present world absorbed more and more artistic element by combining modern arts and taste. Through conti...

Copper sculptures get rusty easily in the humid air and oxidized into black copper, and the copper oxide on the surfaces continues to interact with the carbon dioxide in the air, creating a layer of copper green called verdigris. In addition, copper also interacts with the hydrogen sulfide in the air to produce a black copper sulfide. It is the reaction o...