2009 Volume 50 Issue 3 Pages 605-609
In this research, Ti coating was conducted on Ti40Zr10Cu36Pd14 bulk metallic glass (BMG) in order to increase the formation rate of hydroxyapatite layer. The formation behavior of bone-like hydroxyapatite on Ti-coated and uncoated Ti40Zr10Cu36Pd14 bulk metallic glasses (BMGs) was studied. The surface morphology of Ti-coated and uncoated Ti40Zr10Cu36Pd14 BMG was investigated by scanning electron microscopy and energy dispersive X-ray spectroscopy. The results revealed that the alkali pretreatment in 5 M NaOH solution at 60°C for 24 h had a beneficial effect on the formation of porous sodium titanate on Ti-coated Ti40Zr10Cu36Pd14 BMG. A bone-like hydroxyapatite layer was able to form on the alkali-treated Ti-coated Ti40Zr10Cu36Pd14 BMG after a short-time immersion in simulated body fluid (SBF). On the contrary, hydroxyapatite formation was not observed on the uncoated Ti40Zr10Cu36Pd14 BMG after the same chemical treatments.