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Nitinol is an alloy of nickel and titanium that has about half the nickel. It was first discovered in the 1960s. However, Nitinol wouldn’t be available until decades later due to manufacturing difficulties and difficulty in processing. Many of Nitinol’s applications have actually been discovered since the mid-1990s. Its shape memory and superelasticity properties are what made it useful in many different areas. Nitinol has shape memory, which means it can be transformed into another form by heating above the transition temperature.
Property and Characteristics for Nitinol
Nitinol has the unique ability to adapt and work with specific strains. This makes it a versatile drug that has many uses in medicine. Nitinol displays a cubic crystal structure, known as austenite. This is also the parent phase. Lower temperatures cause it to spontaneously change into a “monoclinic,” more complicated crystal structure, called martensite. The temperature at that austenite transforms into martensite is commonly known as the “transition temperature”. More precisely, martensite forms at the Ms temperature. And the Mf temperature is where it fully forms. Because of these two features of Nitinol’s structure — superelasticity and shape memory — Nitinol can exhibit a reversible effect to applied stress. This is due to phase transitions between the martensitic and austenitic phases.
These two aspects are critical to Nitinol’s properties. One is the fact that the transition can be reversed. This means that heating at temperatures above the transition temperature could restore the crystal structure back to its simpler form. It is also important to note that two-way conversion occurs instantly.
Martensite crystals have the rare ability to undergo finite dimensional deformation, with almost no breakage of atomic bonds. This is known as twins. It involves the rearrangement and deformation of atomic planes that does not cause permanent deformation. In this manner, it can resist approximately 6-8% strain.
Martensite can be converted into austenite using heating. The original austenite structure is guaranteed to remain intact, regardless of how the martensite phase has deformed. This is why the term “shape memories” means that even though austenite deforms at higher temperatures, it retains its original shape.
Nitinol’s medical devices, like a Stent, can be created at body temperature. Once it has been deformed, or folded at another temperature, the device is inserted into an arterial, where it will return to its normal temperature. This phase change makes it possible for the device to completely recover from high strains (up to 7%)
Nitinol Wire
This allows for the use of Nitinol-wire devices which have been bent or formed to be used in the body. The tube can accommodate small grasping or biopsy tools that are smaller than those made from standard alloys. Nitinol’s unique weight reduction makes it attractive for biomedical purposes, such as heart valve instruments, nail anchors, diaphragm defects, complex diaphragm devices and other implants.
But heat treating Nitinol to adjust the temperature is delicate. The temperature and age control precipitation of Ni-rich phases. These are used to regulate the nickel content within the nickel/titanium lattice. By depleting the nickel-rich matrix, aging increases the temperature transition. It is crucial to combine heat treatment with cold working in order to control Nitinol alloy properties.
Nickel-Ti Alloy Price
Price is affected by many things, such as the demand and supply in the market and industry trends. Economic activity and market sentiment are also important.
Send us an enquiry if you need the latest Nickel alloy powder cost. (brad@ihpa.net)
Alloy Powder Supplier
Lempotee advanced materials Nano Technology Co. Ltd. (Lempotee), is a well-respected global supplier and manufacturer that provides high-quality chemical products, including graphite powders, silicon powders, nitride particles, zinc sulfuride, calcium nutride, and other nanomaterials.
Send us an enquiry if you’re looking for Ni-Ti powder of high quality. (brad@ihpa.net)
Property and Characteristics for Nitinol
Nitinol has the unique ability to adapt and work with specific strains. This makes it a versatile drug that has many uses in medicine. Nitinol displays a cubic crystal structure, known as austenite. This is also the parent phase. Lower temperatures cause it to spontaneously change into a “monoclinic,” more complicated crystal structure, called martensite. The temperature at that austenite transforms into martensite is commonly known as the “transition temperature”. More precisely, martensite forms at the Ms temperature. And the Mf temperature is where it fully forms. Because of these two features of Nitinol’s structure — superelasticity and shape memory — Nitinol can exhibit a reversible effect to applied stress. This is due to phase transitions between the martensitic and austenitic phases.
These two aspects are critical to Nitinol’s properties. One is the fact that the transition can be reversed. This means that heating at temperatures above the transition temperature could restore the crystal structure back to its simpler form. It is also important to note that two-way conversion occurs instantly.
Martensite crystals have the rare ability to undergo finite dimensional deformation, with almost no breakage of atomic bonds. This is known as twins. It involves the rearrangement and deformation of atomic planes that does not cause permanent deformation. In this manner, it can resist approximately 6-8% strain.
Martensite can be converted into austenite using heating. The original austenite structure is guaranteed to remain intact, regardless of how the martensite phase has deformed. This is why the term “shape memories” means that even though austenite deforms at higher temperatures, it retains its original shape.
Nitinol’s medical devices, like a Stent, can be created at body temperature. Once it has been deformed, or folded at another temperature, the device is inserted into an arterial, where it will return to its normal temperature. This phase change makes it possible for the device to completely recover from high strains (up to 7%)
Nitinol Wire
This allows for the use of Nitinol-wire devices which have been bent or formed to be used in the body. The tube can accommodate small grasping or biopsy tools that are smaller than those made from standard alloys. Nitinol’s unique weight reduction makes it attractive for biomedical purposes, such as heart valve instruments, nail anchors, diaphragm defects, complex diaphragm devices and other implants.
But heat treating Nitinol to adjust the temperature is delicate. The temperature and age control precipitation of Ni-rich phases. These are used to regulate the nickel content within the nickel/titanium lattice. By depleting the nickel-rich matrix, aging increases the temperature transition. It is crucial to combine heat treatment with cold working in order to control Nitinol alloy properties.
Nickel-Ti Alloy Price
Price is affected by many things, such as the demand and supply in the market and industry trends. Economic activity and market sentiment are also important.
Send us an enquiry if you need the latest Nickel alloy powder cost. (brad@ihpa.net)
Alloy Powder Supplier
Lempotee advanced materials Nano Technology Co. Ltd. (Lempotee), is a well-respected global supplier and manufacturer that provides high-quality chemical products, including graphite powders, silicon powders, nitride particles, zinc sulfuride, calcium nutride, and other nanomaterials.
Send us an enquiry if you’re looking for Ni-Ti powder of high quality. (brad@ihpa.net)
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