cobalt


Cobalt is a chemical element with the symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver metal.

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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 has been detected in Egyptian statuettes and Persian necklace beads of the ...

Cobalt is a lustrous very hard silvery metal belonging to a group called the "transition metals". It is one of only 3 ferromagnetic transition elements along with iron and nickel. As a metal it is very mechanically hard and tough, and it has a very high melting point (hence the smelting problems) and also remains magnetic to the highest ...

As of last year, 15 of the 19 cobalt-producing mines in Congo were owned or financed by Chinese companies, according to a data analysis. The companies had received at least $12 billion in loans ...

Cobalt (Co) is a metal used in numerous diverse commercial, industrial, and military applications, many of which are strategic and critical. On a global basis, the leading use of cobalt is in rechargeable battery electrodes. Superalloys, which are used to make parts for gas turbine engines, are another major use for cobalt.

Cobalt mining, however, is associated with dangerous workers' exploitation and other serious environmental and social issues. As such, questions have arisen as to whether the transition to electric vehicles and cobalt-based batteries is yet another example of environmental problem-shifting and what a renewable energy transition without cobalt ...

Cobalt is a metal critical to the global energy transition. One of cobalt's main applications at the present time is in rechargeable batteries of various types. While potentially commercially available cobalt-free substitutes do exist, depending on the application, cobalt substitution could result in a loss in product performance or an increase ...

Cobalt is an important component of lithium ion batteries, like those in many electric vehicles. SALMON, Idaho — The first — and only — cobalt mine in America in decades opened Friday in ...

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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.

Properties, sources and uses of the element cobalt. Some common forms of cobalt include cobalt-60 and cobalt chloride. Cobalt blue is a vivid color used in artwork.

The quest for Congo's cobalt, which is vital for electric vehicles and the worldwide push against climate change, is caught in an international cycle of exploitation, greed and gamesmanship.

cobalt: [noun] a tough lustrous silver-white magnetic metallic element that is related to and occurs with iron and nickel and is used especially in alloys — see Chemical Elements Table.

Cobalt is a silvery gray metal that has diverse uses based on certain key properties, including ferromagnetism, hardness and wear-resistance when alloyed with other metals, low thermal and electrical conductivity, high melting point, multiple valences, and production of intense blue colors when combined with silica. Cobalt is used mostly in cathodes in rechargeable batteries and in superalloys for

Cobalt is a hard, gray metal element. It's part of vitamin B-12. This vitamin is essential for making red blood cells (erythropoiesis). It also maintains the nervous system. Cobalt is in the body only as part of vitamin B-12. Cobalt has some of the same jobs as manganese and zinc. It can replace manganese in activating several enzymes.

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Cobalt is a metal that is found in nature. It is used to make steel and can be found in many other materials, including ceramics, cement, paints, leather goods, and other metal products. Cobalt ...

The production protocol of camphene-camphor-polypropylene plastic was described in our recent paper focused on self-propelled motion 34.The plastic was made of a mixture of components: camphor (98 ...

Cobalt (Co) is a hard, gray metal that occurs naturally. It is found in rocks, soil, water, plants, and animals, including people. It can harm the eyes, skin, heart, and lungs. Exposure to cobalt may cause cancer. Workers may be harmed from exposure to cobalt and cobalt-containing products. The level of harm depends upon the dose, duration, and ...

Cobalt definition, a silver-white metallic element with a faint pinkish tinge, occurring in compounds whose silicates afford important blue coloring substances for ceramics. Symbol: Co; atomic weight: 58.933; atomic number: 27; specific gravity: 8.9 at 20°C. See more.

Cobalt is the brainchild of Oxeye Game Studio, which consists of Jens Bergensten, Daniel Brynolf, and Pontus Hammerberg. Throughout its long development process it's become dense with features but the main thing to learn is that you play as a cute cyborg with a passion for 2d multiplayer battles involving extreme slow-mo and combat rolls.

Operation Hyacinth: Directed by Piotr Domalewski. With Tomasz Zietek, Hubert Milkowski, Marek Kalita, Adrianna Chlebicka. Poland, 1985: Not satisfied with the result of a murder investigation, a young officer in communist Warsaw sets out on his own to discover the truth.

"Cobalt is a vital element for healthy animals and deficiency can result in debilitation, anaemia, emaciation and stunted growth," she said.

Cobalt Bliss. ¥19,800. エア モア アップテンポほど、90年代バスケットボールの雰囲気を見事に体現しているシルエットはないだろう。. 大型で大胆なデザインでは、スタイルとイノベーションが融合。. 登場と同時にたちまち旋風を巻き起こし、現在もなお注目 ...

O2 Investment Partners, a private equity firm in Bloomfield Hills, today announced through FCAH Aerospace it has made an investment in, and partnered with, Cobalt Aero Services to support its strategic growth plan. Terms of the deal were not disclosed. Cobalt Aero Services, based in Hot Springs, Ariz., is a licensed FAA and EASA repair station ...

The paper raises awareness for art conservators, private collectors, and museums that many pigments contain magnetically active particles. Five pigments based on iron and cobalt were selected and examined and the relative magnetic permeabilities determined.

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