Cobalt is used as a catalyst in the Fischer–Tropsch process for the hydrogenation of carbon monoxide into liquid fuels and cobalt octacarbonyl Hydroformylation of alkenes.

Cobalt carboxylate catalysts are used to improve the adhesion between steel and rubber in steel-belted radial tires.

The largest applications of cobalt catalyst is in the production of terephthalic acid (TPA) and diethyl terephthalate (DMT) for the production of polyethylene terephthalate (PET).

Cobalt is used in nickel-cadmium (NiCd) and nickel metal hydride (NiMH) to improve nickel oxidation.Lithium cobalt oxide (LiCoO 2) is widely used in lithium-ion battery cathodes which are used in mobile devices and electric cars.In advanced magnetic technology cobalt is applied in adhesives, electronic components, anodizing, moisture indicators, catalysts, electroplating solutions, and recording media.

Co-alloys such as Permendur are used in top-performance electrical magnets to transport magnetic flux with low losses.Cobalt is used to increase iron’s saturation density making it ideal as a soft magnet.The special alloys of aluminium, nickel, cobalt, and iron, known as Alnico, and of samarium and cobalt ( samarium-cobalt magnet) are used in permanent magnets.Cobalt is used in electroplating for its attractive appearance, hardness, and oxidation resistance.Co-based hard metals are also applied in wood cutting, pulp and paper, glass containers, power generation, aerospace, steelmaking, and plastics.Typical uses of hard metal cobalt are in automobile construction, oil drilling, and chemical processing.Co is used for making different types of hard metals of wear and corrosion like- the carbide type (Stellite 6), intermetallic type (Tribaloy T800), and solid-solution type (Stellite 21).The hard metal of cobalt has been used for cast and wrought components and hard-facing products, such as wire, covered electrodes, powders, etc.Co-based alloys have been used in applications that require high-temperature wear and/or corrosion resistance.Co is used for the making of Stellite alloy which is a very hard metal.Cobalt with platinum alloy is used for jewelry making.Some high-speed steels contains cobalt for increased heat and wear resistance.Cobalt-based alloys are useful for making turbine blades for gas turbines and aircraft jet engines.The cobalt–chromium–molybdenum casting alloy Vitallium was developed for prosthetic applications.Cobalt-based superalloys are used for cutlery, machine tools, and hard-facing applications.Cobalt also increases carbon solubility in the alloy matrix, altering the grain-boundary carbides formed.Cobalt alloy used to increase the hardening but reduce the solubility of aluminium and titanium in the alloy matrix at temperatures less than 1080☌.Cobalt is added to nickel alloys to improve their high-temperature properties which have a relatively minor effect on solid-solution and making super alloys.Let us discuss the uses of cobalt in the next part of the article. Cobalt occurs in nature primarily as arsenides, oxides, and sulfides. The two valance states are cobaltous (II) and cobaltic (III) and the former is the most common valance used in the chemical industry. The uses of cobalt in different fields are listed below – Let us discuss the uses of cobalt in different fields. Cobalt is a relatively rare magnetic element with properties similar to iron and nickel.

Cobalt uses