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properties of cobalt

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properties of cobalt

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Cobalt is of relatively low abundance in the Earth's crust and in natural waters, from which it is precipitated as the highly insoluble cobalt sulfine CoS. The transformation is sluggish and accounts in part for the wide variation in reported data on physical properties of cobalt. LD 50 (oral, rat)- 6171 mg/kg. At standard temperature and pressure, cobalt is not readily oxidized, which means it does not easily lose electrons from its surface. Cobalt is a sturdy, gray metal which resembles iron and nickel. Because they have relatively short half-lives they are not particularly dangerous. Boiling point: 5,301 F (2,927 C) 8. Cobalt oxide nanoparticles appear as … The element is active chemically, forming many compounds. According to the Jefferson National Linear Accelerator Laboratory, the properties of cobalt are: 1. Distributieweg 3 2645 EG Delfgauw The Netherlands Phone: +31 152 610 900 fax: +31 152 616 289 e-mail: info@lenntech.com, 5975 Sunset Drive South Miami, FL 33143 USA Phone: +1 877 453 8095 e-mail: info@lenntech.com, Level 5 - OFFICE #8-One JLT Tower Jumeirah Lake Towers Dubai - U.A.E. Phase at room temperature: Solid 6. However, if the metal is heated in air, a cobalt-oxide material forms quite easily. Notes on the properties of Cobalt: Specific Heat: Value given for solid phase. Your email address will not be published. Cobalt has a magnetic permeability around 2/3 that of iron. However, too high concentrations of cobalt may damage human health. Soils near mining and melting facilities may contain very high amounts of cobalt, so that the uptake by humans through eating plants can cause health effects. (LD50 = Lethal dose 50 = Single dose of a substance that causes the death of 50% of an animal population from exposure to the substance by any route other than inhalation. The radioactive isotopes of cobalt are not present in the environment naturally, but they are released through nuclear power plant operations and nuclear accidents. It is a member of group VIII of the periodic table. Atomic number (number of protons in the nucleus): 27 2. Cobalt, metallic chemical element, one of the transition elements, atomic number 27. It is used in order to preserve the food and protect the consumer. Cobalt is a hard ferromagnetic, silver-white, hard, lustrous, brittle element. Cobalt produces many vibrant colours, is wear resistant, oxidation resistant, ferromagnetic and conducts electricity. Wind turbines, hard disk drives, motors, sensors, actuators, magnetic resonance imaging etc. Copper is primarily a conductor and it is also a bridge in many ways. Although cobalt is ductile it is also somewhat malleable. Atomic symbol (on the Periodic Table of Elements): Co 3. Cobalt will only mobilize under acidic conditions, but ultimately most cobalt will end up in soils and sediments. Cobalt is a Block D, Period 4 element, while oxygen is a Block P, Period 2 element. Cobalt is a brittle, hard metal, resembling iron and nickel in appearance. Health effects that are a result of the uptake of high concentrations of cobalt are: - Vomiting and nausea - Vision problems - Heart problems - Thyroid damage Health effects may also be caused by radiation of radioactive cobalt isotopes. Properties Of Cobalt It is a hard ferromagnetic, silver-white, lustrous, brittle element. It may also enter air and water and settle on land through wind-blown dust and enter surface water through run-off when rainwater runs through soil and rock containing cobalt. Its specific gravity is 8.9. Cobalt is usually not mined alone, and tends to be produced as a by-product of nickel and copper mining activities. Cobalt alloys have good magnetic properties, corrosion resistance, wear resistance, and high temperature strength. This can cause sterility, hair loss, vomiting, bleeding, diarrhoea, coma and even death. Cobalt also has valuable catalytic properties. Soils that contain very low amounts of cobalt may grow plants that have a deficiency of cobalt. 2.2. It imparts hardness to steels and alloys. Cobalt is a brittle, hard, silver-grey transition metal with magnetic properties similar to those of iron (it is ferromagnetic). Cobalt is stable in air and unaffected by water, but is slowly attacked by dilute acids. In general, there are two classes of magnetic substances, hard magnets and soft magnets. It melts at 1495oC and its boiling temperature is 2927oC . The metal melts at 1495 °C and boils at 2927 °C. It is similar to iron and nickel in its physical properties. It is also used as catalysts for the petroleum and chemical industries. Abstract. Cobalt will accumulate in plants and in the bodies of animals that eat these plants, but cobalt is not known to bio magnify up the food chain. Your email address will not be published. Copper can be used to draw away negative energy. Properties of Cobalt-60 Cobalt-60 is naturally unstable, therefore emits two gamma rays at energies of 1.17 MeV and 1.33 MeV, and decays at a rate of approximately 1% per month back to stable, non-radioactive nickel-60. On the other hand, soils near mining and melting facilities may contain very high amounts of cobalt, so that the uptake by animals through eating plants can cause health effects. Reflects incoming energies and makes the perfect base for magic mirrors. Radioactive cobalt 60 has many uses. Cobalt is not found as a free metal and is generally found in the form of ores. Ductile means the metals ability to be drawn into thin wires. Cobalt can be found in cobaltite, erythrite, glaucodot and skutterudite ores. Cobalt is a hard ferromagnetic, silver-white, hard, lustrous, brittle element. Cobalt (hydro)oxide films on Bekipor ST 20AL3 sintered metal fiber were formed by electrochemical deposition under galvanostatic conditions using different electrolyte baths (nitrate, acetate and chloride). Cobalt is an element that occurs naturally in the environment in air, water, soil, rocks, plants and animals. These properties arise from the crystallographic nature of cobalt, the solid-solution-strengthening effects of Cr, W, and Mo, the formation of metal carbides, and … 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 beneficial for humans because it is a part of vitamin B12, which is essential for human health. It is similar to iron and. Cobalt is a is transition metal. Cobalt is a hard, brittle metal. In the last years, CoFe 2 O 4 (cobalt ferrite) nanoparticles become remarkable material due to their performance in various sophisticated applications. These properties have led to cobalt’s use in several core applications integral for a greater quality of life and a sustainable planet. It is blue is majorly used by artists and is used by craft workers in porcelain, stained-glass pottery, enamel jeweller, and tiles. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. Most of the Earth's cobalt is in its core. Because of its impressive properties cobalt is an important component in wear resistant and corrosive resistant alloys. It is similar in appearance to iron and nickel. Cobalt is a chemical element with the symbol Co and atomic number 27. It is a hard ferromagnetic, silver-white, lustrous, brittle element. As a group, the cobalt-base alloys may be generally described as wear resistant, corrosion resistant, and heat resistant (strong even at high temperatures). It is found in mineral ores. It has a high melting point and is hard-wearing even at high temperatures. When plants grow on contaminated soils they will accumulate very small particles of cobalt, especially in the parts of the plant we eat, such as fruits and seeds. Up to date, curated data provided by Mathematica's ElementData function from Wolfram Research, Inc. Click here to buy a book, photographic periodic table poster, card deck, or 3D print based on the images you see here! Magnetic substances, hard, lustrous, brittle element because of its impressive properties cobalt is used. A hard, lustrous, brittle element 58.933195 4 Co2+ ). ). ). ) )! The metals ability to be produced as a by-product of nickel an ultrasound-assisted.. 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