Corrosion: Conversion of a material by a chemical reaction with an oxidant that causes a degradation of its properties. Corrosion is nothing more than the process by which metal forged by humans returns to its natural state. ALLOY: Combination of a metallic element with one or more other chemical elements. In Corrosion des alliages [Corrosion of Alloys], a collection of all sorts of metallic sounds held together with (chemical) processing elements creates new alloys. After they have been assembled, an oxidizing agent corrodes the structure, causing it to return to its original form.