Zirconium is a chemical element, the element symbol Zr atomic number is 40, and the elemental element is a high melting point metal, light gray color. The surface of zirconium is easy to form an oxide film, which has a glossy appearance, so its appearance is similar to steel. It has corrosion resistance, soluble in hydrofluoric acid and aqua regia, and at high temperatures, it can react with non-metallic elements and many metallic elements to form a solid solution.