Cobalt has been in use for centuries to create beautiful deep blue glass, ceramics, pottery and tiles. In a similar way, it is being used to make paint pigments. In addition to traditional uses, Cobalt is used in a number of industrial applications. When Cobalt is alloyed with other metals, very strong magnets are created. Super alloys containing Cobalt are used in the production of jet engines and gas turbine engines for energy generation. These super alloys account for nearly half of the Cobalt used each year. Cobalt is also used in making of cutting and wear-resistant materials. Lithium cobalt oxide (LiCoO2) is widely used in Lithium ion battery electrodes.
Nickel-cadmium (NiCd) and nickel metal hydride (NiMH) batteries also contain significant amounts of cobalt. Cobalt alloyed with chromium and tungsten is used for making high speed cutting tools. Since cobalt has magnetic properties, it is used to make strong permanent magnets.
Cobalt is an element that has many diverse and critical uses. In most applications, substitution for cobalt yields lower product performance. Most common industry usages of Cobalt are as below: