Nitinol is also known as Nitinol. It is a combination of nickel, titanium and metals. The atomic percentages are almost equal. Different alloys can be named after the nickel content (e.g. nickel). Nitinol 55 & Nitinol60. They have shape memory effects and super elasticity at different temperatures.
Nitinol can be used in medical applications as a functional material.
Memorable alloys not only have an exceptional shape memory function but also have outstanding properties such as wear resistance and corrosion resistance.
Nitinol has two closely related and unique properties: shape memory effect and superelasticity(also known as pseudoelasticity).Shape memory is the ability of Nitinol to deform at a certain temperature,maintain its deformed shape when external force is removed,and then restore its original undeformed shape when heated to above its”transition temperature”.Superelasticity is the ability of a metal to withstand large deformations and immediately restore its undeformed shape after the external load is removed.The deformation of Nitinol is 10 to 30 times that of ordinary metals and can restore its original shape.Whether Nitinol alloy shows shape memory effect or superelasticity depends on whether it is higher than the transition temperature of the specific alloy.Below the transition temperature,it exhibits a shape memory effect.
It is a highly functional material.
The tensile strength of Nitinol can reach 1000 MPa.In other words,it takes more than 100 dry grams per square millimeter to destroy it.This force is stronger than ordinary steel,and it also has good”memory”performance and corrosion resistance.
Nitinol alloy contains 50%nickel and 50% titanium,that is to say,nickel and titanium are equally divided,each accounting for half.The temperature range of the shape memory can be adjusted by the control component.Generally,the higher the nickel content of Nitinol,the lower the operating temperature.When it contains 55% nickel and 45% titanium,the memory alloy can work at room temperature.
People have used the shape memory properties of shape alloys to create pearl necklaces and bracelets using shape memory alloys wires. They also made bras from shape alloy wires.
Nitinol is a replacement for traditional actuators such as solenoid valves, servomotors, etc. ), such as Stiquito, a simple hexapod robotic robot.
Fluid thermal valves make use of Nitinol Springs. This material acts both as a temperature sensor, and an actuator.
The alloy can be used in both sports cameras that have auto-focus and mobile phones as an optical image stabilizer.
Pneumatic valves can be fitted with alloys for a more comfortable seat. This has been a industry standard.
The alloy Chevrolet Corvette has a nickel/titanium memory-alloy actuator that replaces an electronic transmission. It opens and closes hatches to release air from the body, making it easier to access.
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