Iridium Powder

Iridium Powder

Iridium is a chemical element with the symbol Ir and atomic number 77. A very hard, fragile, and white transition metal, white, and platinum from the platinum group. Iridium is the second most dense metal with a density of 22.56 g / cm3 as defined by experimental X-ray crystallography. At room temperature and standard atmospheric pressure, iridium has a density of 22.65 g / cm3, 0.04 g / cm3 higher than measured osmium in the same way. It is the most corrosion-resistant metal, even at temperatures up to 2000 ° C. Although only some molten and halogen salts are corrosive to solid iridium, the finely divided iridium powder is much more reactive and can be flammable.

Iridium is a hard, brittle, lustrous, and dense transition metal from the platinum family. It is silvery-white in color and is known to be the most corrosion-resistant element known. Not afraid of air, water and acids.

Currently, the demand for iridium comes mainly from the electronics, automotive, and chemical industries, where it is used to coat electrodes in the Chlor-alkali process and as a catalyst.

It is used in some cases in rotation bearings, as well as in scientific equipment and other special equipment, but it is mainly used in alloys: alloys of osmium and iridium are used for fountain pen tips and compass bearings.