Titanium,element,introduction, business, insurance Titanium element introduction
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Titanium is a metallic element,gray, atomic number is 22, relative atomic mass is 47.87. It can be burned innitrogen, with high melting point. Titanium and titanium-based alloy are newstructural materials, mainly for the aerospace industry and marine industries.From the discovery of titanium element to obtain pure product, it is lasted ahundred years. Earth's surface ten kilometers thick strata containing up to sixthousandths of titanium, more than 61 times than copper, ranked tenth levels inthe crust (the crust elements ranks: oxygen, silicon, aluminum, iron, calcium,sodium, potassium, magnesium, hydrogen and titanium). Just a handful of dirtfrom the ground, which contains a few thousandths of titanium, the world'sreserves of more than ten million tons of titanium is not rare. There are hundreds millions tons of sand on thebeach, both titanium and zirconium minerals are mixed in the sand, they are heavierthan ore, through the sea millions of years panning around the clock, therelatively heavy ilmenite and zircon sands washed together, cross the longcoast, forming a layer of a piece of titanium and zirconium seam. This seam isa kind of black sand, there are usually a few centimeters to tens ofcentimeters thick. The hardness of titanium is closed to steel, andits weight is almost only half the volume of steel, although titanium is slightlyheavier than aluminum, its hardness is 2 times than Al. Now, in the space rocketsand missiles are used a large number of titanium instead of steel. According tostatistics, currently the world's titanium for astronautics has reached onethousand tons or more every year. Fine titanium powder also a good rocket fuel, known as cosmic titanium metal, spacemetal. Titanium has good heat resistance, the meltingpoint is up to 1725. At roomtemperature, titanium can safety lay on a variety of acid and alkali solutions.Even the most ferocious acid - aqua regia also nor corrode it. Titanium is noafraid of sea water, it was once a man sink titanium to the bottom, five yearslater to take up to have a look that many small animals and stuck underwaterplants in it, but it is not rusty, still shiny. Titanium in the periodic table cB group, atomic number 22, atomicnucleus consists of 22 protons and 20-32 neutrons. Titaniums thermalconductivity and electrical conductivity is poor, similar or slightly lowerthan stainless steel, titanium has superconductivity. Titaniumssuperconductive critical temperature is 0.38-0.4K. Titanium has plasticity,high titanium up to 50-60% elongation, reduction of area up to 70-80%, but lowintensity, not suitable for structural materials. The presence of impurities intitanium has a great impact on its mechanical properties, in particular interstitialimpurities (oxygen, nitrogen, carbon) can greatly improve the strength oftitanium, significantly reducing its ductility. Titanium as a structuralmaterial has good mechanical property, that is, achieved by appropriatelystrict controlling the amount of impurities and alloying elements. The nature of titanium has a very closerelationship to temperature and its existing form, purity. Dense titanium metalin nature is quite stable, but according to metal powder supplier, the titanium powder in the air can cause spontaneous combustion. Thepresence of impurities in titanium was significant impact the physical andchemical properties, mechanical properties and corrosion resistance of titanium.In particular, some interstitial impurities can make the titanium latticedistortion, which will affect the various properties of titanium. In roomtemperature, titanium has a small chemical activity, can react withhydrofluoric acid and a few of materials, but when the temperature increasesthe activity of Ti increases rapidly, especially at high temperatures, thetitanium can react violently with many substances. The smelting process of titaniumare generally under high temperature of above 800,therefore it must be operated in a vacuum or in an inert atmosphere protection. Article Source:http://www.mhcmp.com
Titanium,element,introduction,