Shape Memory Nitinol Rod

Product Details

Shape memory Nitinol Rod is also called nitinol memory alloy rod. When it comes to shape memory alloy, many people have heard its name. No matter how it is deformed, it can magically change back to its original shape after being heated to a certain temperature.

 

So far, dozens of shape memory alloys have been discovered in the world, among which nitinol alloy is the earliest developed and most practical alloy material.

 

Shape memory nitinol bar 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 an excellent functional material.

 

1) Shape memory properties: Nitinol alloy is deformed by external force at a certain temperature, and can still maintain the deformed shape after removing the external force, but it can automatically return to the original shape at a higher temperature.

 

2) Hyper elasticity: The super elasticity of nitinol alloy can change with the heat treatment conditions. When the nitinol rod bar is heated above 400℃, the superelasticity begins to decrease. We are shape memory nitinol bar.

 

1) Anti-toxicity: The special chemical composition of nickel-titanium shape memory alloy, that is, nickel-titanium and other atomic alloys, contains about 50% nickel, and is known to have carcinogenic and cancer-promoting effects. Usually, titania ACTS acts as a barrier layer on the surface, so Ni-TI alloys have good biocompatibility. TiXOy and TixNiOy in the surface layer can inhibit the release of Ni.

 

2) The so-called superelasticity refers to the phenomenon that the strain of the sample is much greater than the elastic limit strain under the action of external force, and it can automatically recover when unloading. In other words, in the state of the parent phase, stress-induced martensitic transformation occurs due to the applied stress, so the alloy exhibits mechanical properties different from ordinary materials, its elastic limit is much larger than that of ordinary materials, and there is no difference Follow Hooke's Law. In contrast to shape memory properties, superelasticity does not involve heat.

 

3) Good shock absorption performance: the greater the vibration caused by chewing and grinding teeth at night, the greater the damage to the root and periodontal tissue. Through different attenuation experiments, it is found that the vibration amplitude of the stainless steel wire is greater than that of the superelastic nickel-titanium wire, and the initial vibration amplitude of the superelastic nickel-titanium wire is only half of that of the stainless steel wire, which has good vibration and shock absorption characteristics. Arc protection is important for dental health. Traditional arcs, such as stainless steel wire, tend to increase root absorption.

 

4) Sensitivity to temperature changes in the oral cavity: The orthodontic capabilities of stainless steel wires and CoCr alloy orthodontic wires are basically not affected by oral temperature. The orthodontic ability of highly elastic Nitinol dental floss varies with oral temperature. when the deformation is constant. Orthodontic capacity increases with temperature. On the one hand, it accelerates the movement of the teeth, since the temperature changes in the oral cavity stimulate blood flow in areas of blood stasis due to capillary stagnation caused by orthodontic appliances, allowing the repair cells to receive sufficient nutrients during this period. Teeth move to maintain their vitality and normal function. On the other hand, orthodontists cannot accurately control or measure orthodontic capacity in the oral environment.

 

 

 

Shape Memory Nitinol Rod is often used to make a variety of medical devices and industrial components because it has some unique properties. Based on these properties, shape memory nitinol bar can be applied in the following fields:

 

1) Medical devices: It can be used to make medical devices such as stents, catheters, braces, and heart angioformers.

2) Industrial components: It can be used to make springs, sensors, valves, and other industrial components for automotive, aviation, aerospace, and other fields.

3) Household items: It can be used to make textured textures, adaptive forms, and other household items, such as tables, lamps, etc.

 

The above are some application fields listed according to some unique characteristics of Nitinol rods.

 

 

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