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What is Nitinol used for?

Joe Ford

What is Nitinol used for?

Medical applications for nitinol include: Dentistry, especially in orthodontics for wires and brackets that connect the teeth. “Sure Smile” dental braces are an example of its application in orthodontics. Endodontics, mainly during root canals for cleaning and shaping root canals.

Does Nitinol corrode?

In this chloride-rich medium the corrosion stability of Nitinol is limited by the susceptibility to localized corrosion and is in that sense more similar to nickel than to titanium. The corrosion stability of Nitinol is strongly dependent on the surface preparation—grinding, polishing or chemical etching.

Is nickel biocompatible?

As the devices are used internally, it is essential they are non-toxic and biocompatible.

How do you shape a memory alloy?

Manufacture. Shape-memory alloys are typically made by casting, using vacuum arc melting or induction melting. These are specialist techniques used to keep impurities in the alloy to a minimum and ensure the metals are well mixed. The ingot is then hot rolled into longer sections and then drawn to turn it into wire.

Will a spring always return to its original shape?

The change in length of a spring is proportional to the force applied. For any given spring if you double the force on the spring you will double the change in length, (the extension). This is true within the elastic limit of the spring, once this limit is exceeded the spring will not return to its original shape.

What is the ability to be stretched and returned to its original?

Elasticity

Which is more elastic spring or rubber band?

A spring is more elastic to rubber band meaning it has a great resistance to deformation.

What is a stretching force called?

As you stretch or compress an elastic material like a bungee cord, it resists the change in shape. It exerts a counter force in the opposite direction. This force is called elastic force. As soon as the stretching or compressing force is released, elastic force causes the material to spring back to its original shape.