Ir(Atomic number : 77)

1. Introduce – It is a platinum group metal with a high melting point and very low corrosivity, so it is used as Ir metal itself or as an alloy with other platinum group metals – It is the most non-corrosive of the metallic elements and has corrosion resistance to the extent that it does not dissolve in strong acids such as muriatic acid – It reacts with sodium chloride, sodium cyanide (NaCN), etc. in the molten state, and also reacts with halogen elements (F₂, Cl₂) at high temperatures – Effect of Ir alloying elements : corrosion resistance, high temperature wear resis...