Study of metastable NiTi powders and coatings obtained by plasma spraying
DOI:
https://doi.org/10.3989/revmetalm.2008.v44.i3.107Keywords:
Metastability, Nanotecnology, Rapid solidification, Thermal sprayAbstract
NiTi intermetallic is widely known for its shape memory effect and pseudoelasticity. Due to its high corrosion resístanse (biocompatibility), most of the studies carried out deal with its use for medical applications. With regard to surface technologies, many reported investigations focus on Vacuum Thermal Spray to provide NiTi coatings with minimal oxide content.The Thermal Spray Center has attempted to obtain metastable NiTi powders and coatings by means of Atmospheric Plasma Spraying with a liquid nitrogen cooling system. Starting from two different Ni-45wt%Ti feedstock powders. One powder is a blend of Ti and Ni particles, whereas the other has been alloyed by gas atomization. Both powders were sprayed obtaining better results starting from the gas atomized powder resulting in a final deposit where NiTi was the main phase with minimal oxidation. Different spraying parameters were tested and microstructural characterization was performed by SEM-EDS. XRD patterns showed some peak broadening; that seems to be produced by structural metastability of the coatings.
Downloads
References
[1] http://www2.polito.it/ricerca/namamet/
[2] J. Cintas, F.G. Cuevas, J.M. Montes, J.A. Rodríguez, P. Urban y J.M. Gallardo, Rev. Metal. Madrid 43 (2007) 196-208.
[3] S. Dosta, I. G. Cano, J. R. Miquel y J. M. Guilemany, Proc.2nd Rencontre Internationale de la Projection Thermique, Lille, Francia, 2005, pp. 302-307.
[4] B.H. Kear, J. Colaizzi, W.E. Mayo y S.C. Liao, Scr. Mater. 44 (2001) 2.065-2.068.
[5] J.Colaizzi, B.H. Kear, W.E. Mayo, R. Shropshire, R.W. Rigney y S. Brunhouse, Proc. Int. Thermal Spray Conf. (ITSC), Montreal, Canada, 2.000, pp. 813-820.
[6] X.Zhou, V.Shukla, W.R.Cannon y B.H. Kear. J. Am. Ceram.Soc. 86(2003) 1.415-1.420.
[7] EED- COMETT 87/2/C-2/0863, The Science And Technology Of Shape Memory Alloys, Barcelona, 1989, DL: PM-1287/89.
[8] I. G. Cano, S. Dosta, J. R. Miguel y J. M Guilemany. J. Mater. Sci. 42 (2007) 9.331- 9.335.
[9] C. Kollia, C. Patta, P. Vassiliou y V. Kasselouri. Rev. Metal. Madrid,41 (2005) 227-231.
[10] I. G. Cano, S. Dosta, J. R. Miguel y J. M Guilemany, Bol. Soc. Esp. Ceram. Vidr. 46 (2007) 123-126.
[11] P. Brockhurst y E. Hsu, Aust. Endod. J. 24 (1998) 115-119.
[12] M.A. Garrido-Maneiro, A.J. López-Galisteo y J. Rodríguez, Rev. Metal. Madrid 40 (2004) 380-383.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2008 Consejo Superior de Investigaciones Científicas (CSIC)

This work is licensed under a Creative Commons Attribution 4.0 International License.
© CSIC. Manuscripts published in both the printed and online versions of this Journal are the property of Consejo Superior de Investigaciones Científicas, and quoting this source is a requirement for any partial or full reproduction.
All contents of this electronic edition, except where otherwise noted, are distributed under a “Creative Commons Attribution 4.0 International” (CC BY 4.0) License. You may read the basic information and the legal text of the license. The indication of the CC BY 4.0 License must be expressly stated in this way when necessary.
Self-archiving in repositories, personal webpages or similar, of any version other than the published by the Editor, is not allowed.