Anodic Fabrication of Ti-Ni-Si-O Nanostructures on Ti10Ni5Si Alloy

Abstract

Ti-Ni-Si-O nanostructures were synthesized on Ti10Ni5Si alloy through an electrochemical anodization in electrolyte solutions containing ammonium fluoride (NH4F). The anodic oxide structures were affected by the electrochemical anodization parameters, including the electrolyte viscosity, water content, anodization potential and anodization time. Using an anodization potential of 40 V for 90 min in an ethylene glycol/glycerol electrolyte with 3 vol.% deionized water, highly ordered self-organized nanotube arrays were obtained in the α-Ti phase region of the alloy substrate, with an average inner diameter of 70 nm and a wall thickness of about 12 nm. Self-organized nanopore structures with an average pore diameter of 25 nm grew in the Ti5Si3 phase region. Only etching pits were found in the Ti2Ni phase region. The Ti-Ni-Si-O nanostructures were characterized using scanning electron microscopy and energy dispersive spectroscopy. In addition, a formation mechanism of different nanostructures was presented.

Ni/Si-Codoped TiO2 Nanostructure Photoanode for Enhanced Photoelectrochemical Water Splitting

“…Figure 1a shows a SEM image of the homogenized alloy. Similar to the as-cast alloy reported in our previous work, the gray region, black region, and bright strip-like region were the α-Ti matrix, Ti 5 Si 3 phase, and Ti 2 Ni phase, respectively [34,35]. The XRD pattern of the alloy (Figure 1b) further proved the existence of the α-Ti and Ti 5 Si 3 phases [36].…”

Enhanced Photoelectrochemical Water Splitting Performance of Ni/Si-doped TiO2 Photoanode Fabricated through Electrochemical Reduction in Aqueous Solutions

“…Morphology.-Ni/Si-doped TiO 2 nanostructures fabricated through electrochemical anodization of Ti-Ni-Si alloy have been discussed in our previous work. [31][32][33] It was found that vertically aligned self-organized nanotube arrays, regular nanopores, and etching pits grew at the α-Ti, Ti 5 Si 3 , and Ti 2 Ni phase region, respectively (Fig. 2a).…”

Sandblasted and Acid Etched Titanium Dental Implant Surfaces Systematic Review and Confocal Microscopy Evaluation

“…The implants have characteristics related to the materials with which they are made and to their geometry, macroscopic and microscopic. The material normally used is commercially pure titanium, this material has characteristics of biocompatibility, low density, electrochemical stability, high mechanical strength and sufficient rigidity [23,24,25,26,27,28,29]. The macroscopic implant geometries evaluate macroscopic differences in the shape of dental implants.…”