研究目的
The comparative study of the structure and electrochemical properties of TiO2 layers on the surfaces of commercially pure titanium and Ti6Al4V alloy.
研究成果
The study concluded that anodization at higher voltages increased the diameter of nanotubes. Heat treatment transformed the amorphous structure of TiO2 nanotubes to crystalline anatase phase, improving corrosion resistance. However, the porous feature of the anodizing layers on Ti6Al4V substrate led to lower corrosion resistance, which increased after heat treatment.
研究不足
The study was limited to two types of titanium substrates and specific anodization and heat treatment conditions. The morphology of the nanotubes was irregular, and the alignment was not compactly stacked, which could affect the uniformity of the results.
1：Experimental Design and Method Selection:
The study involved anodization of titanium substrates in ethylene glycol-based electrolyte solution using a Power Supply MCS-3204 MANSON at 20 V or 40 V for 60 minutes. SEM and X-ray diffraction analyses were performed to determine the properties of the anodized layers before and after heat treatment at 500 °C for 120 minutes.
2：Sample Selection and Data Sources:
Flat samples of commercially pure titanium (cp Ti) Grade 2 and Ti6Al4V alloy Grade 5 were used.
3：List of Experimental Equipment and Materials:
Power Supply MCS-3204 MANSON, SEM JEOL JSM-6490LV, X-ray diffractometer Rigaku, Autolab PGSTAT 128n potentiostat/galvanostat.
4：Experimental Procedures and Operational Workflow:
Samples were anodized, some were heat treated, and then analyzed for microstructure and electrochemical behavior.
5：Data Analysis Methods:
Linear potentiodynamic polarization curves were used to measure polarization resistances and Tafel's slopes.
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