Effects of applied voltages on hydroxyapatite coating of titanium by electrophoretic deposition.
Hydroxyapatite (HA) coatings were deposited on titanium substrates by electrophoretic deposition (EPD) at constant voltage and dynamic voltage, respectively. Various surface morphologies were observed under different type of voltages. Under a constant voltage of 20 V, a dense HA coating could be prepared. Under a constant voltage of 200 V, big HA particles were deposited and the coating was porous. Under a dynamic voltage, a continuous gradient HA coating could be obtained. HA coatings were characterized with a field emission-scanning electron microscopy (FE-SEM) and an X-ray diffraction (XRD). XRD indicated no significant HA decomposition when the coatings were sintered for 2 h at 800 degrees C.
Meng
Xianwei
X
Institute for Biomaterials Research & Development, Kyungpook National University, Daegu, South Korea.
Kwon
Tae-Yub
TY
Yang
Yunzhi
Y
Ong
Joo L
JL
Kim
Kyo-Han
KH
D020099:Coated Materials, Biocompatible / Q000737:chemistry; D017886:Durapatite / Q000737:chemistry; D004586:Electrophoresis; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry; D014961:X-Ray Diffraction
D020099:Coated Materials, Biocompatible; D017886:Durapatite; D014025:Titanium