Titanium Performance
The density of titanium is 4.51g / cm3, higher aluminum and less than iron, copper, nickel, but the head of the metal strength located
2, corrosion resistance
medical titanium alloy is a very reactive metal, which is very low equilibrium potential, thermodynamic corrosion tendency in the medium is large, but in fact the titanium is very stable in many media, such as titanium in an oxidizing, neutral or weakly reducing medium is corrosion resistance. This is because titanium has a great affinity for oxygen, in the air or an oxygen-containing medium, the surface of titanium to produce a dense, strong adhesion, inert large oxide film, protects the titanium substrate from corrosion, even if the mechanical wear will soon heal or regenerate. This shows that titanium is a metal with a strong passive tendencies. Medium temperature below 315 * c titanium oxide film remains this feature.
In order to improve the corrosion resistance of titanium, developed oxidation, plating, plasma spraying, surface treatment technology ion nitriding, ion implantation and laser treatment. Titanium oxide film plays a role in enhanced protection. Obtained the desired corrosion effects. For the sulfuric acid, hydrochloric acid, methyl amine solution, high-temperature and high temperature chloride wet chlorine produced in the need of metal materials, the development of titanium - molybdenum, titanium - palladium, titanium - molybdenum - and a series of corrosion resistant nickel titanium alloy. Titanium castings using a titanium-molybdenum alloy -32, for often pitting or crevice corrosion environments using titanium -0.3 -0.8 molybdenum-nickel alloy or titanium partial use of equipment -0.2 titanium-palladium alloy, have received a very good use effect.
3, good heat resistance
New titanium alloy under long-term use of 600 * C or higher temperatures.
4, good low temperature performance
Its strength with decreasing temperature increase, but the plastic change is not large, good ductility and toughness at low temperature -196-253 ℃. Avoid cold brittle metal, is an ideal material for cryogenic vessels, tanks and other equipment.
5, anti-damping properties.
After titanium subjected to mechanical vibration, electrical vibration, compared with steel, copper, its vibration damping longest, do take advantage of this performance titanium fork, ultrasonic vibrating element grinder medicine and advanced audio speaker vibration film.
6, non-magnetic, non-toxic
Titanium is non-magnetic metal, a large magnetic field will not be magnetized, non-toxic and with human tissue and blood have good compatibility, they were using the medical profession.
7, the tensile yield strength of its proximity
This performance titanium shows its yield ratio (tensile / yield strength) high, indicating that the metal material is too poor in the molding of plastic deformation, due to the ratio of yield strength and elastic modulus of titanium, causing titanium molding rebound capacity.
8, good heat transfer performance
Although the thermal conductivity of the metallic state lower than carbon steel and copper, but because of the excellent corrosion resistance of titanium, the use of the wall thickness can be greatly thinned, and the surface heat exchanger with steam way dropwise condensation, reducing the thermal resistance, the titanium surface not scaling may also reduce the thermal resistance of titanium to make the heat transfer performance is significantly improved.
9, low elastic modulus
Titanium elastic modulus at room temperature 106.4GMPa, 57% of the steel.
10, suction performance
medical titanium is a very active chemical properties of metals can react with many elements and compounds at high temperatures. Titanium getter mainly refers to the reaction occurs at high temperature and carbon, hydrogen and oxygen.
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