The metal’s unique physico-chemical properties translate into several key characteristics that are un-substitutable by using other substances. Between 417°C and its melting point of 1493°C, cobalt has a face-centered cubic structure. Compounds. Some common forms of cobalt include cobalt-60 and cobalt chloride. Q.Y. Characteristics. Cobalt oxide nanoparticles appear as a white powder with spinel crystal structure. Cobalt is the first element in the ninth column of the periodic table. 238-243 Article Download PDF View Record in Scopus Google Scholar A high temperature face‐centered cubic (FCC) form. The characteristics of an assay based on albumin cobalt binding were assessed in suspected acute coronary syndrome patients and in a control reference population. Features & Characteristics of Samarium Cobalt Magnets. 2018 Jun;18(3):206-220. doi: 10.1007/s12012-017-9433-z. Facts & Properties of Cobalt. The elastic modulus of cobalt is about 210 GPa (30 x 106 psi) in tension and about 183 GPa (26.5 x 106 psi) in compression. Cobalt is a ferromagnetic (strongest magnet), up to 1121 0 C. Its specific gravity is 8.9. ; Mazanko, V.F. Cobalt produces brilliant blue pigments which have been used since ancient times to color paint and glass. Radioactive 60 Co is used in the treatment of cancer. Cobalt salts are used to impart blue and green colors in glass and ceramics. Excess concentrated ammonia reacts with cobalt(II) ion to form a metal complex ion, hexaamminecobalt(II) ion: It is imperative, procedural and, since 2002, object-oriented.COBOL is primarily used in business, finance, and administrative systems for companies and governments. (2020). The high temperature resistance, hardness and wear characteristics of cobalt when alloyed with other metals can also be put to good use not only in gas turbines, but also as hard surfacing in critical applications where working environments are aggressive (hot, pressurised and/or acidic). Its atomic number is 27. Characteristic reactions of Co²⁺ Aqueous Ammonia. Cobalt produces many vibrant colours, is wear resistant, oxidation resistant, ferromagnetic and conducts electricity. SmCo magnet is a kind of strong permanent magnet with excellent magnetic properties. Cobalt atoms have 27 electrons and 27 protons with 32 neutrons in the most abundant isotope. Gao, F. ZhouMicrostructure and wear characteristics of cobalt-based alloy deposited by plasma transferred arc weld surfacing Surf Coat Technol, 194 (2005), pp. Uses of Cobalt. Sedimentary characteristics and the implications of cobalt-rich crusts resources at Caiwei Guyot in the Western Pacific Ocean. However, cobalt exhibits two atomic forms: 1. Effect of cyclic martensitic γ-ε transformations on diffusion characteristics of cobalt in an iron–manganese alloy Danilchenko, V.Yu. Its physical properties resemble iron and nickel. Cobalt is the most satisfactory matrix for cemented carbides. I have some chemical characteristics for Cobalt. A study of polyaniline (PANI) doping with various cobalt compounds, that is, cobalt(II) chloride, cobalt(II) acetate, and cobalt(II) salen, is presented. Cobalt compounds account for about 25 percent of cobalt used in the United States. Cobalt blue is a vivid color used in artwork. Like nickel, cobalt is inherently resistant to corrosion, and can accommodate high levels of beneficial elements. The primary ores of cobalt are cobaltite, smaltite and erythrite. It is a hard, ferromagnetic, brittle element. Cobalt is a brittle, hard, silver-grey transition metal with magnetic properties similar to those of iron (it is ferromagnetic). 38, No. Yamazaki T, Chung JS, Tsurusaki K (1995) Geotechnical parameters and distribution characteristics of the cobalt-rich manganese crust for the miner design. The characteristics and suitability of the Langmuir isotherm can be evaluated by another dimensionless factor R L using the equation given by Weber and Chakkravorti . Characteristics: Cobalt is a steel-gray, hard, tough metal. Int J Offshore Polar Eng 5:75–79. In its compounds cobalt nearly always exhibits a +2 or +3 oxidation state, although states of +4, +1, 0, and −1 are known. Properties, sources and uses of the element cobalt. Cobalt is a ferromagnetic metal with a specific gravity of 8.9. ; Iakovlev, V.E. 1)Full name of Cobalt: Cobalt(evil spirit) 2)Chemical symbol: Co 3)Atomic number: 27 4)Atomic mass: 58.93 Characteristics of coordination compounds. Marine Georesources & Geotechnology: Vol. Pure cobalt is not found in nature, but compounds of cobalt are common. The catalysts were prepared by depositing cobalt compounds onto the polymer surface. Characteristics of Watercolours - checking labels. The several magnetic instabilities of conventional cobalt doped or modified iron oxide are improved in this material. Phthalo colours are generally very staining colours. 1. Ceria particles were prepared in two different particle sizes, one in nano and the other in micron size (termed CeO2-NP and CeO2-MP), with average particle sizes of 4 and 120 nm, … It has a high melting point and is hard-wearing even at high temperatures. Key Points Copper is the most heavily used coinage metal due to its electrical properties, its abundance (contrasted to silver and gold), and the attractiveness of its alloys—brass and bronze. 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