Titanium is a metal element, below 0.83mm titanium particles are called titanium powder. Titanium powder can be divided into pure titanium powder, alloy titanium powder, titanium hydride powder, metal titanium powder, sponge titanium powder, titanium nitride powder, titanium carbide powder.
Titanium powder is silver gray powder, can be burned in a nitrogen atmosphere, with high melting point. Titanium add hydrogen in a vacuum under high temperature can be hydrogenated, after inhalation of large amounts of hydrogen become titanium hydride, titanium hydride is easy embrittlement, relatively easy to make into powder, which is currently a common method of metal powder supplier producing a large number of titanium powder.
Titanium hydride powder is generally containing 4% hydrogen, dark gray, under high temperatures will release hydrogen, currently apply this technology to produce "bubble aluminum", because titanium hydride powder contains hydrogen, so to be made of pure titanium powder should be at high temperature under vacuum, use a plenty of time to evacuate vacuum, then restore into titanium powder. Titanium powder is stable at room temperature, at high temperature with strong chemical combination ability, can be combined with oxygen, carbon, nitrogen, and many other elements. Titanium powder at high temperatures has suction function, so that in the electronics industry used titanium powder as a "getter".
Titanium powder in combustion will emit white sparks. Titanium powder is flammable in case of encountering fire and intense friction, has been widely used in fireworks, outdoor fireworks commonly used 100 mesh titanium powders, 200 mesh titanium powder used to make cold light fireworks indoors. The purity higher, the sparks will be more white.
Titanium powder in the "metallic additive" has also been applied, as the titanium agent, titanium content is greater than 88%, 90%, 92%, 95%, 97%, 98% titanium powder can be used as additives. Particle size is 40 mesh, 60 mesh, 80 mesh, 100 mesh titanium powders can be used as "titanium agents".
From discovery titanium element to obtain titanium has lasted a hundred years. While the use of titanium, really gets to know its true face, was in 1940s. In 1947, people began to smelt titanium in the factory. At that time, the annual output was only 2 tons. In 1955, annual production surged to 20,000 tons. In 1972, the annual output reached 20 million tons.
The hardness of titanium is almost the same as steel, while its weight is virtually only half the volume of steel, although titanium is slightly heavier than aluminum, but its hardness is two times greater than aluminum. Fine titanium powder is also a good rocket fuel, so that titanium was known as cosmic metal, space metal. Titanium with good heat resistance, the melting point was up to 1725. At room temperature, titanium can be safe to lie in a variety of acid and alkali solutions. Even the most ferocious acid - aqua vagina cannot corrode it. The biggest drawback of titanium is difficult to refine, mainly because of the titanium has strong chemical combination ability at extreme temperatures, can be combined with oxygen, carbon, nitrogen, hydrogen and many other elements.
Nano titanium powder, ultrafine titanium powder was prepared through a special process, high purity, small particle size and uniformity, high surface activity, can be fully used in paints, resins, and nano-titanium through surface parcel handling, can place a long time but do not oxidized, through surface treating nano titanium can be better solved dispersion problems and overcome nanopowder agglomeration.
Nano titanium combined with resin generated various new paints, with a variety of advantages which similar products cannot be compared. The first is corrosion-resistant, items coated with it not only has the ability to resist boiling water, but also cannot be damaged after immersed in seawater, is the most promising anti-corrosion coating of marine hull. Secondly, the coating hardness and wear resistance increased significantly, it also has amazing ability to repair itself, can be utilized as metals, non-metallic materials common healant. Nano Titanium coating is also shown to have self-cleaning. In addition, titanium as the only metal without any impact on human nerve, taste, its coating can also be widely used in food industry.
Article Source:http://www.mhcmp.com
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