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Characteristics and application of Ti Ni shape memory alloy
Ti Ni shape memory alloy consists of 56% Ni and 44% Ti. It has magical shape memory effect, super elasticity, fatigue resistance, wear resistance, corrosion resistance and good biocompatibility. In the 1980s, the medical titanium nickel memory alloy was successfully implanted into the human body, known as "magic metal" in the industry. The deformation temperature of Ti Ni shape memory alloy is between zero and five degrees, and the recovery temperature is about 37 ℃. In other words, if the alloy is deformed, it can be restored to its original shape by pouring it into a pool. In the case of fracture fixation, although heating at body temperature or hot saline wet compress can restore shape, due to the limitation of bone on materials, dynamic, continuous pressure or clamping force can be generated at the fracture end to stabilize fracture recovery. The basic research of TiNi memory materials in China lags behind that of foreign countries, but it is in the international leading position in clinical application research.
In addition to medical purposes, titanium nickel alloy materials are also widely used in our life, such as titanium nickel alloy glass, communication antenna, fishing appliances and so on.
