Investigation of nickel suppression and cytocompatibility of surface-treated nickel-titanium shape memory alloys by using plasma immersion ion implantation

2005 ◽  
Vol 72A (3) ◽  
pp. 238-245 ◽  
Author(s):  
K. W. K. Yeung ◽  
R. W. Y. Poon ◽  
X. Y. Liu ◽  
J. P. Y. Ho ◽  
C. Y. Chung ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Nickel Titanium ◽  
Plasma Immersion Ion Implantation

Carbon plasma immersion ion implantation of nickel–titanium shape memory alloys

Biomaterials ◽  
2005 ◽  
Vol 26 (15) ◽  
pp. 2265-2272 ◽  
Author(s):  
R.W.Y. Poon ◽  
K.W.K. Yeung ◽  
X.Y. Liu ◽  
P.K. Chu ◽  
C.Y. Chung ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Nickel Titanium ◽  
Plasma Immersion Ion Implantation ◽  
Carbon Plasma

The electron beam freeform fabrication of NiTi shape memory alloys. Part I: Microstructure and physical–chemical behavior

2020 ◽  
pp. 146442072097505
Author(s):  
RPM Guimarães ◽  
F Pixner ◽  
G Trimmel ◽  
J Hobisch ◽  
T Rath ◽  
...  
Keyword(s):  
Electron Beam ◽  
Additive Manufacturing ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Nickel Titanium ◽  
Freeform Fabrication ◽  
Austenitic Transformation ◽  
Columnar Grains ◽  
One Step ◽  
Niti Shape Memory Alloys

Nickel–titanium alloys are the most widely used shape memory alloys due to their outstanding shape memory effect and superelasticity. Additive manufacturing has recently emerged in the fabrication of shape memory alloy but despite substantial advances in powder-based techniques, less attention has been focused on wire-based additive manufacturing. This work reports on the preliminary results for the process-related microstructural and phase transformation changes of Ni-rich nickel–titanium alloy additively manufactured by wire-based electron beam freeform fabrication. To study the feasibility of the process, a simple 10-layer stack structure was successfully built and characterized, exhibiting columnar grains and achieving one-step reversible martensitic–austenitic transformation, thus showing the potential of this additive manufacturing technique for processing shape memory alloys.

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