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Open AccessArticle

Anodic Fabrication of Ti-Ni-O Nanotube Arrays on Shape Memory Alloy

1
Institute of Microelectronic Materials and Technology, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
*
Author to whom correspondence should be addressed.
Materials 2014, 7(4), 3262-3273; https://doi.org/10.3390/ma7043262
Received: 27 January 2014 / Revised: 26 March 2014 / Accepted: 17 April 2014 / Published: 22 April 2014
(This article belongs to the Special Issue Shape Memory Materials)
Surface modification with oxide nanostructures is one of the efficient ways to improve physical or biomedical properties of shape memory alloys. This work reports a fabrication of highly ordered Ti-Ni-O nanotube arrays on Ti-Ni alloy substrates through pulse anodization in glycerol-based electrolytes. The effects of anodization parameters and the annealing process on the microstructures and surface morphology of Ti-Ni-O were studied using scanning electron microscope and Raman spectroscopy. The electrolyte type greatly affected the formation of nanotube arrays. A formation of anatase phase was found with the Ti-Ni-O nanotube arrays annealed at 450 °C. The oxide nanotubes could be crystallized to rutile phase after annealing treatment at 650 °C. The Ti-Ni-O nanotube arrays demonstrated an excellent thermal stability by keeping their nanotubular structures up to 650 °C. View Full-Text
Keywords: TiNi alloy; anodization; nanotubes; thermal stability; Raman TiNi alloy; anodization; nanotubes; thermal stability; Raman
MDPI and ACS Style

Liu, Q.; Ding, D.; Ning, C. Anodic Fabrication of Ti-Ni-O Nanotube Arrays on Shape Memory Alloy. Materials 2014, 7, 3262-3273.

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