Nitinol is a binary alloy composed of nickel and titanium. In addition to its unique shape memory function, it also has a series of excellent properties and is a very excellent functional material. FANMETAL can provide customers with various types of nickel-titanium alloy products such as rods, plates or sputtering targets (Titanium Nickel Alloy Disc). They have passed quality inspections by professional institutions and can also accept customized services. You can order our products with confidence. .
1.Characteristics
(1) Shape memory characteristics. Nickel-titanium alloy is deformed by external force at a certain temperature. It can still maintain the deformed shape after the external force is removed, but it can automatically return to its original shape at higher temperatures.
(2) Super elasticity. The superelasticity of nickel-titanium alloy can change with changes in heat treatment conditions. When the nickel-titanium alloy wire is heated to above 400°C, the superelasticity begins to decrease.
(3) Corrosion resistance. Studies have shown that the corrosion resistance of nickel-titanium alloy is better than the best medical stainless steel at present, so it is widely used in the medical field.
(4) Biocompatibility. Although nickel is carcinogenic, the titanium dioxide on the surface of nickel-titanium alloys acts as a barrier and can inhibit the release of nickel, making nickel-titanium alloys have good biocompatibility.
(5) Good shock absorption. The initial vibration amplitude of the superelastic nitinol wire is only half that of the stainless steel wire.
2.Application
(1) Aerospace
The applications of nickel-titanium alloys in aerospace mainly include pipe joints on aircraft, as well as spacecraft antennas, fasteners, connecting parts, electrical connections and electromechanical actuators.
(2) Automobile industry
Nickel-titanium alloys are commonly used in automobile engine heat-proof fan clutches, automatic exhaust adjustment nozzles, automatic switches for diesel radiator holes, and shape memory springs for jet engine oil filters.
(3) Medical equipment
Nickel-titanium alloy has been successfully used in oral and dental correction, surgical correction and plastic surgery, and minimally invasive cardiovascular interventional treatment. At present, surgical sutures, brain aneurysm clips, contraceptive rings, artificial hearts, micropumps for artificial kidneys, etc. have entered medical clinical trials.
(4) Civilian products
Civilian products mainly include super-elastic glasses frames, mobile phone antennas, women's bra brackets, high-elastic and high-tenacity fishing wires, earphone head covers, etc.
In recent years, nickel-titanium alloy materials have played an increasingly important role in many fields, but they still have shortcomings such as easy oxidation, high processing costs, and long production cycles during actual production and processing. With in-depth research on the properties of nickel-titanium alloys and the continuous development of technology, the prospects of nickel-titanium alloys will surely become better and better.
