PHASE FIELD SIMULATION OF GROWTH KINETICS OF COHERENT Ni4Ti3 PRECIPITATE IN NiTi SHAPE MEMORY ALLOY

2010 ◽  
Vol 2010 (1) ◽  
pp. 84-90 ◽  
Author(s):  
Changbo KE ◽  
Xiao MA ◽  
Xinping ZHANG
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Growth Kinetics ◽  
Phase Field ◽  
Niti Shape Memory Alloy ◽  
Phase Field Simulation ◽  
Field Simulation ◽  
Kinetics Of

Corrosion Kinetics of Laser Treated NiTi Shape Memory Alloy Biomaterials

1996 ◽  
Vol 459 ◽  
Author(s):  
F. Villermaux ◽  
I. Nakatsugawa ◽  
M. Tabrizian ◽  
D. L. Piron ◽  
M. Meunier ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Laser Treatment ◽  
Niti Alloy ◽  
Niti Shape Memory Alloy ◽  
Surgical Implants ◽  
Hank’S Solution ◽  
Kinetics Of ◽  
Human Fluids

ABSTRACTNiTi shape memory alloy presents interesting mechanical properties as surgical implants. However, due to its high amount of Ni which may dissolve and release toxic ions in human fluids, the medical use of this material is a great concern. We have developed a laser treatment which modifies the oxide layer and enhances uniform and localised corrosion resistance of NiTi alloy.In this paper we further analysed the effect of this treatment with potentiostatic and AC impedance measurements in physiological Hank's solution. We conclude that the laser treatment creates a stable passive film which results in improved corrosion resistance of this alloy.

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