scholarly journals Influence of substrate temperature and deposition rate on structural and mechanical properties of shape memory NiTi films

2010 ◽  
Vol 10 ◽  
pp. 44-51 ◽  
Author(s):  
Sudhir Kumar Sharma ◽  
H.S. Vijaya ◽  
S. Mohan
2013 ◽  
Vol 591 ◽  
pp. 99-103 ◽  
Author(s):  
Hao Zhang ◽  
Shu Wang Duo ◽  
Xiang Min Xu ◽  
Huan Ke ◽  
Ting Zhi Liu ◽  
...  

CrN coatings have been deposited successfully by Closed Filed Unbalanced Magnetron Sputter Ion Plating (CFUMSIP). The effect of substrate temperature (TS) and bias voltage (VB) together on microstructure, morphologies and mechanical properties of CrN coatings were studied. The results showed that the deposition rate of CrN coatings declines with the increase of VB Under both room temperature (R.M.) and 300°C. The FCC-CrN disappeared gradually and orth-CrN arised with the increase of VB, and the TS promoted the transformation from FCC - CrN to orth - CrN. The surface morphology of CrN coatings with changed VBs was greatly different, and VB could further improve the mechanical properties of coatings. In this paper, the CrN coating with the parameters (TS =300°C, VB =-30V) had relatively high deposition rate and mechanical properties.


2018 ◽  
Vol 142 ◽  
pp. 203-211 ◽  
Author(s):  
Stephan Gleich ◽  
Rafael Soler ◽  
Hanna Fager ◽  
Hamid Bolvardi ◽  
Jan-Ole Achenbach ◽  
...  

2002 ◽  
Vol 17 (2) ◽  
pp. 279-283 ◽  
Author(s):  
X. Y. Chen ◽  
Y. F. Lu ◽  
Z. M. Ren ◽  
S. Zhu

Thin films of TiNi shape memory alloy have been prepared by pulsed-laser deposition at different substrate temperatures. The stoichiometry and crystallinity of the deposited films as functions of the substrate temperature were investigated. The deposition rate, surface morphology, crystallization temperature, and phase transformation behavior of the films were studied. It was found that both the substrate temperature and the laser fluence play important roles in the composition control and crystallization of the films. The deposition rate is of the order of 10−2 nm/pulse. The Ni content ranges from 46.7 to 52.0 at.%. The crystallization temperature of the amorphous Ti–51.5 at.% Ni films is around 460 °C. The activation energy of the crystallization process was determined by Kissinger's method to be 301 kJ/mol. The martensitic transformation temperature of the annealed Ti–51.5 at.% Ni film was determined to be −20.8 °C.


Sign in / Sign up

Export Citation Format

Share Document