Saturday, April 25, 2020

What is the role of pure titanium?

Titanium shaped parts are parts used for machinery, made of titanium as raw materials. So, what role does titanium shaped parts pure titanium have?
Pure titanium is a silver-white metal with many excellent properties. The density of titanium is 4.54g / cm3, which is 43% lighter than steel and slightly heavier than the prestigious light metal magnesium. The mechanical strength is similar to that of steel, two times greater than aluminum and five times greater than magnesium. Titanium is resistant to high temperature and has a melting point of 1942K, which is nearly 1000K higher than gold and 500K higher than steel.
Titanium is a chemically active metal. When heating, it can interact with non-metal such as O2, N2, H2, S, and halogen. However, at normal temperature, a thin and dense oxide protective film is easily formed on the titanium surface, which can resist the effects of strong acids or even aqua regia, and exhibits strong corrosion resistance. As a result, the general metals become flawed in the acid solution while titanium is safe and sound.
Liquid titanium can dissolve almost all metals, so it can form alloys with many metals. Titanium steel made by adding titanium to steel is tough and elastic. Titanium and metals Al, Sb, Be, Cr, Fe, etc. generate interstitial compounds or intermetallic compounds.
The aircraft made of titanium alloy can carry more than 100 passengers than other aircraft made of the same weight. The manufactured submarine can resist both seawater corrosion and deep pressure, and its diving depth is 80% higher than that of stainless steel submarines. At the same time, titanium is non-magnetic, will not be discovered by mines, and has a good anti-custodial effect.
Titanium is "biological". In the human body, it can resist the corrosion of secretions and is non-toxic, suitable for any sterilization method. Therefore, it is widely used in the manufacture of medical devices, artificial hip joints, knee joints, shoulder joints, flank joints, skull bones, active heart valves, and bone fixation clips. When new muscle fiber rings are wrapped around these "titanium bones", these titanium bones begin to sustain the body's normal activities.
The titanium of titanium shaped parts is widely distributed in the human body, the content in the normal human body is not more than 15mg per 70kg bodyweight, and its role is not clear. However, titanium can stimulate phagocytic cells and enhance immunity.
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