Thermal stability and in vitro bioactivity of Ti-Al-V-O nanostructures fabricated on Ti6Al4V alloy.
This work investigates the thermal stability and in vitro bioactivity of Ti-Al-V-O nanostructures grown on Ti6Al4V alloy through an anodization method. After anodization of the two-phase Ti6Al4V alloy, there were two different kinds of Ti-Al-V-O nanostructure (nanotube arrays grown in the alpha-phase region and irregular nanopores grown in the beta-phase region) that formed on the surface of the alloy. It was found that the Ti-Al-V-O nanotubes can withstand a high temperature of 675 degrees C in air without collapse, whereas the irregular Ti-Al-V-O nanopores presented a lower thermal stability. In vitro simulated body fluid (SBF) testing of heat-treated nanostructures indicated that a quick apatite formation on these nanostructures occurred after only several hours of sample immersion in the SBF.
Li
Yan
Y
State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
Ding
Dongyan
D
Ning
Congqin
C
Bai
Shuo
S
Huang
Lin
L
Li
Ming
M
Mao
Dali
D
D000497:Alloys; D001031:Apatites / Q000378:metabolism; D001826:Body Fluids / Q000378:metabolism; D006358:Hot Temperature; D043942:Nanotubes / Q000737:chemistry*; D014025:Titanium / Q000378:metabolism*
D000497:Alloys; D001031:Apatites; C031462:titanium alloy (TiAl6V4); D014025:Titanium