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

Materials

Qiang Liu¹  Dongyan Ding¹ 

[1] Institute of Microelectronic Materials and Technology, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; E-Mail:

关键词: TiNi alloy;    anodization;    nanotubes;    thermal stability;    Raman;   

DOI  :  10.3390/ma7043262

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland