Application
Nitinol alloy might be used coupling, biomedical and medical, toys and novel items, brake, heat engine, transducer, low temperature active model and inter slot, lifting equipment.
Explanation about Memory function
Nitinol alloy has such special property because of its own transformation, a mechanical stress from 10,000 to 20,000 psi was produced between the two different phase transitions of crystals.
Seven Features
1.shape memory feature a heating change process. a certain shape parent phase cool from Af to Mf,then heating it from Mf to Af, which shall remain it original shape. 2. Superelastic don’t comply with Hooke’s Law, which can show stronger strength than other material. 3. Sensitive at intraoral environment as Arch wire for tooth orthodontics,…
Physical properties
Following information are from standard nitinol: 76 x10 6Ωcm (martensite) Heating conducting:0.18 W / cmoC(austenite) 0.086 W / cmoC (martensite) Thermal expansivity:11 x10 6 / oC (austenite) 6.6 x10 6 / oC (martensite) Magnetic permeability :< 1.002 Magnetic susceptibility: 3.7 x10 6 emu / g(austenite) 2.4 x10 6 emu / g(martensite) Elasticity modulus: 75 –…
The history of Nitinol development
A project alloy with unique shape memory was discovered by William J. Buehler and Frederick Wang at the lab of United Stated Navy in 1958,which is Ni-Ti shape memory alloy was named Nitinol . A project alloy with unique shape memory was discovered by William J. Buehler and Frederick Wang at the lab of United…
Basics
Nitinol also called NiTi alloy Melting point 1310 ℃ Density:6.45g/cm³ Resistivity: 82 x10 6Ωcm(austenite)