Surface characteristics and corrosion resistance properties of TiNi shape memory alloy coated with Ta

2004 ◽  
Vol 186 (3) ◽  
pp. 346-352 ◽  
Author(s):  
Y. Cheng ◽  
W. Cai ◽  
H.T. Li ◽  
Y.F. Zheng ◽  
L.C. Zhao
Keyword(s):  
Corrosion Resistance ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Surface Characteristics

Corrosion Behavior of the Transient Liquid Phase Diffusion Bonding Joint of TiNi Shape Memory Alloy and Stainless Steel in Hanks' Solution

2013 ◽  
Vol 750-752 ◽  
pp. 739-742
Author(s):  
Ying Ling Wang ◽  
Qiu Zhi Gao ◽  
Gui Fang Sun ◽  
Jie Ye
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Liquid Phase ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Corrosion Behavior ◽  
Pitting Corrosion ◽  
Diffusion Bonding ◽  
Transient Liquid Phase ◽  
Phase Diffusion

The transient liquid phase diffusion bonding (TLP-DB) was employed to join TiNi shape memory alloy (SMA) and stainless steel (SS) with an interlayer metal of Ag-Cu eutectic metal foil.The corrosion behavior of the TLP-DB joint in Hanks solution at 37°C was investigated by electrochemical methods.The results show that the corrosion resistance of the joint is comparable to, but lower than that of base metals during the early anodic polarization, and the corrosion rate of the joint is between that of TiNi SMA and SS in the transpassive region at high potentials. The corrosion resistance of the specimens in Hanks' solution is associated with the surface quality, mircotructure and the intermetallics. Both TiNi SMA and SS display the characteristics of localized corrosion with a little pitting corrosion, while the joints mainly show the characteristics of pitting corrosion concentrated on the enrichment Cu phases.

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.

A Study on the Corrosion Resistance and Shape-Memory Effect of FeMnSiCrNiCo Shape-Memory Alloy

2002 ◽  
Vol 394-395 ◽  
pp. 435-438 ◽  
Author(s):  
Zhi Zhong Dong ◽  
Wen Xi Liu ◽  
Defa Wang ◽  
Jin Ming Chen ◽  
Dao Zhi Liu
Keyword(s):  
Corrosion Resistance ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect
Sign in / Sign up

Export Citation Format

Share Document