Monday, April 28, 2014

Titanium has great technical importance, entering into the composition of many of alloys and steels


Jump to: navigation, search For other uses of the name Titan, see Titan (disambiguation). Titanium is a chemical element of group IV of the periodic table. Its name comes from the Greek word titanate (Titans).
[Edit] Characteristics Chemical Symbol: Ti Atomic number: 22 Atomic cabotage weight: 47.88 g / mol Density (20 C): 4.5 g / cm 3 (higher than aluminum) cabotage Electronegativity (Pauling cabotage scale): 1.5 Melting point: 1660 C Boiling point: 3260 C Condition: solid (metal) color: bright white (pure) Tensile strength: excellent. Titanium is a metal crystallized in hexagonal compact. It has similarities with iron or nickel. It is hard and brittle. In very pure is malleable. Drives great heat and electricity. It's easier than other metals with similar thermal and mechanical properties. In combination form a valence state of 4, 3 and 2 (the former being the more stable). Ti powder burning cabotage in the air, and the only elements cabotage that burns in nitrogen. At ordinary temperatures, compact titanium is stable in air. When the metal surface is pure titanium lights oxygen at 25 C. Heated to 600 C, the titanium reacts with oxygen to form titanium dioxide, TiO 2. Fuel Class D (along with other flammable metals magnesium, potassium, sodium) in pure powder cabotage form. At elevated temperature, combine with the carbon, boron and silicon. Nitride, carbide and titanium boride are very stable compounds and tough. At temperatures above 150 C react with fluorine, and at more than 300 C react with the chlorine. At high temperatures, is alloyed cabotage with iron, to yield 3 and Fe alloy. The water and dilute acid attacks the titanium with the exception of hydrofluoric acid. Dilute hydrochloric acid, when heated, forms TiCl 3. Hot nitric acid converts hydrated titanium oxide, sparingly soluble in acids and bases.
Titanium is the ninth element cabotage in order of abundance in the earth's crust (0.6%). It is found in nature, especially in the form of titanium dioxide (TiO 2), rutile ore, ilmenite, perovskite, SFEN and rare earth mixtures. cabotage Titanium is present in meteorites and in the Sun. Some Moon rocks contain high concentrations dioxide TiO 2. Titanifere ore deposits are found in Australia, USA, Canada, Norway, Finland, France, India, Russia, Japan, South Africa and Brazil. cabotage Russia and Japan are exporting titanium. In Romania is associated with magnetite ilmenite at Borleşti, Ditrău Drăganului Valley, etc..
Being a transition metal groups, titanium form numerous chemical compounds. Depending on environmental conditions, some compounds are stable and others unstable. Among the titanium compounds, the most important are: halides (especially titanium tetrachloride TiCl 4); Titanium dioxide TiO 2.
Titanium is obtained from ore and processed slightly different forms: as sheet metal, metal wire, powder or metal rods. Titanium as the parent metal can not be obtained by a reduction method, as a result very stable carbide but has developed JW Kroll reduction cabotage Kroll process, titanium chloride by heating with an alloy of magnesium and sodium in the an inert atmosphere of argon or helium. cabotage High purity titanium cabotage is obtained in the laboratory cabotage by van Arkel and de Boer method. For industrial purposes cabotage is prepared ferrotitanium, which contains 18-45% Ti and melts at 1400 C.
Titanium has great technical importance, entering into the composition of many of alloys and steels. Titanium alloys with iron (as Ferrotitanium), the light-resistant, tough, good mechanical strength and corrosion, cabotage are used as additives in special cabotage steels. Titanium and its alloys are also used in aeronautics, marine, road and rail transport cabotage (body, axles, wheels, wagons, rails). Borides of titanium, being very hard, is used in the turbine, the reactors. Industrial use of titanium is limited by the difficulty of its removal.
Periodic table of chemical elements --- 89 Ac, 13 Al, 95 I, 47 Ag, 18 Ar, 33 As, 85 At, 79, 7 N, 56 Ba 4 Be, 97 Bk, 83 Bi, 107 Bh 5 B, 35 Br, 48 Cd, 20 In, 98 Cf, 6 C, 58 EC, 55 Cs, 17 Cl, 27 Co, 24 Cr, 29 Cu, 96 cm, 110 Ds, 66 Dy, 105 Db, 99 Es, 68 Er, 63 I, 100 Fm, 26 Fe, 9 F, 15 P, 87 Fr, 64 Gd, 31 Ga, 32 Ge, 72 H, 108 Hs, 2 He, 1 H, 67 Ho, 49, 53 I 77 Ir, 36 Kr, 57, 103 Lr, 3 Li, 71 Mon, 12 Mg, 25 Mn, 109 Mt, 101 Md. 80 Hg, 42 Mo, 11 Na, 60 Nd, 10 Ne, 93 Np, 28 Ni 41 Nb, No 102, 76 Os 8 O 46 Pd, Pt 78, 82 Pb, Pu 94, 84 Po, 19 K, 59 Pr, Pm 61, 91 Pa, 88 R, 86 R, 75 R e, 45 Rh, 111 R, 37 Rb, 44 Ru, 104 Rf, 62 Sm, 21 Sc, Sg 106, 34 Se, 14 Si, 50 Sn, 51 Sb, 38 Sr, 16 S, 81 Tl, 73 Ta, 43 Tc 52 Te, 65 Tb, 22 T

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