Iridium powder is dark gray sponge particle, which is a kind of noble metal element. Its chemical property is stable, which is most corrosion resistant metal and it has great resistance to acid. Only iridium sponge slowly dissolve in hot aqua regia.
|CAS No.:7439-88-5||EINECS No.:231-095-9||Molecualr Formula:Ir||Molecular Weight:192.22|
|Melting Point:2410℃||Boiling Point:4130℃||Density:22.421|
Pure Iridium metal element, Pt-Ir alloy and Ir-Rh alloy apply to make scientific instruments, thermocouple and resistive conductor. Adding iridium element in platinum would improve its corrosion resistance in water, acid and halogen and mechanical strength under 500℃。
Many oxide monocrystals of high melting point grow in crucible of pure Ir element. Iridium pieces can process into iridium wires, which is for high temperature antioxidant thermocouple material and filament material.
Iridium slugs get uses in ignition plug, electrode of alkali method and chemical catalysts.