Tantalum Is Also Very Useful in Medicine
Tantalum is a bluish, light-gray metal with many strange properties and a wide range of applications, known as the all-rounder of the "metal kingdom".
Tantalum is hard and its hardness can reach 6-6.5. After its melting point as high as 2996 degree , tungsten and rhenium, the third. Tantalum is ductile and can be drawn into filaments or made from thin foils. Its coefficient of thermal expansion is small, and it only expands by 6.1 millionths of one degree Celsius; in addition, its toughness is better than copper; scrap tantalum
In addition, tantalum is an important finished super steel, corrosion-resistant steel, heat-resistant steel alloying element, and can provide special materials required for the development of rockets, spacecraft, jet aircraft and space technology. Non-magnetic alloys, tantalum and tungsten, are widely used in the electrical industry, especially tantalum, tantalum carbide, carbon, very hard, even in high conditions and comparable to diamonds. Turn it into a high-speed cutting carbide drill, made with replaceable carbide or diamond. Therefore, tantalum is also considered a smelting vitamin.
Tantalum has excellent chemical resistance and high corrosion resistance. To react either in cold or hot conditions, hydrochloric acid, concentrated nitric acid and aqua regia are anything. Tantalum was placed in sulfuric acid immersion at 200 degree for one year, and the surface damage was only 0.006 mm; experimental results show that tantalum tends to be in alkaline solution, chlorine, bromine, sulfuric acid, and many other pharmaceuticals do not work, only in hydrofluoric acid and Hot concentrated sulfuric acid reacts. This is relatively rare in metals.
The characteristics of tantalum and its wide applicability. In the preparation of various inorganic acid equipment, it can be used to replace tantalum stainless steel. Compared with stainless steel, the service life is improved several times. In addition, in the chemical industry, electronics, electrical appliances and other industries, tantalum can replace the precious metal platinum in the past, which greatly reduces the cost.
It can also play an important role in modern medicine, tantalum; studies have shown that tantalum not only has no damage to the human body; the muscles of the human body can also grow, which is called biocompatibility in medicine. Doctors use this functional tantalum to repair cracks and defects in shattered skulls and broken limbs. Tantalum can also be made into filaments smaller than one-tenth the size of a human hair, used as sutures for visceral surgery or embedded in artificial eyes; this tantalum filament can even replace tendons and nerve fibers. The artificial ear made of Yaojia tantalum plate is installed on the back of the head and then transplanted from the skin of the leg. After a period of time, the newly transplanted skin looks good, and what people see is a tantalum artificial ear.