Cobalt - Wikipedia
Cobalt is a ferromagnetic metal with a specific gravity of 8.9. The Curie temperature is 1,115 °C (2,039 °F) [12] and the magnetic moment is 1.6–1.7 Bohr magnetons per atom. [13] Cobalt has a relative permeability two-thirds that of iron. [14] Metallic cobalt occurs as two crystallographic structures: hcp and fcc. The ideal transition ...
Cobalt | Uses, Properties, & Facts | Britannica
2024年11月14日 · cobalt (Co), chemical element, ferromagnetic metal of Group 9 (VIIIb) of the periodic table, used especially for heat -resistant and magnetic alloys. The metal was isolated (c. 1735) by Swedish chemist Georg Brandt, though cobalt compounds had been used for centuries to impart a blue colour to glazes and ceramics.
Cobalt | History, Uses, Facts, Physical & Chemical ...
Cobalt is transition metal and was discovered in pure form in 1735. It is essential part of vitamin B 12. Its compounds are known as cobalt blue used to color pottery and glass. History and Discovery. Cobalt has been used as a coloring agent since Bronze Age. It has been found in Egyptian statuettes and in Persian jewelry of the 3 rd millennium ...
Cobalt - Element information, properties and uses | Periodic ...
Cobalt is the metal at the centre of vitamin B 12 which helps regulate cell development and therefore DNA and energy production in the body. Cobalt has been known and used by people for its beautiful colouring and pigment properties as far back as 2500BC.
Cobalt Metal Characteristics - ThoughtCo
2019年8月13日 · Cobalt is a shiny, brittle metal that is used to produce strong, corrosion and heat-resistant alloys, permanent magnets and hard metals. Silver-colored cobalt metal is brittle, has a high melting point and is valued for its wear resistance and ability to retain its strength at high temperatures.
Cobalt Facts and Physical Properties - ThoughtCo
2021年8月17日 · Cobalt has a melting point of 1495°C, boiling point of 2870°C, specific gravity of 8.9 (20°C), with a valence of 2 or 3. Cobalt is a hard, brittle metal. It is similar in appearance to iron and nickel. Cobalt has a magnetic permeability around 2/3 that of iron. Cobalt is found as a mixture of two allotropes over a wide temperature range.
Understanding Cobalt: Properties, Uses, and Applications
- Cobalt is a hard, metallic element symbolized as Co with an atomic number of 27. - This transition metal is crucial for various applications, such as rechargeable batteries, superalloys, and pigments. - As a metal, it is solid at room temperature, silvery-blue in color, and has magnetic properties. Historical Background
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