TY - JOUR
T1 - Morphology of calcium phosphate coatings deposited on a Ti-6Al-4V substrate by an electrolytic method under 80 Torr
AU - Wang, Szu Hao
AU - Shih, Wei Jen
AU - Li, Wang Long
AU - Hon, Min Hsiung
AU - Wang, Moo Chin
N1 - Funding Information:
The authors gratefully acknowledge the financial support and partial support by the National Science Council (NSC92-2216-E-151-007) and National Kaohsiung University of Applied Sciences (KUAS-ME-92001), Taiwan, Republic of China, and Pror. M.P. Hung for discussion in the manuscript preparation.
PY - 2005/9
Y1 - 2005/9
N2 - Calcium phosphate coatings were deposited on the Ti-6Al-4V alloy plate in a 0.04 M Ca(H2PO4)2 · H2O (MCPM) solution at 4-10 V, 0-60 °C, 1 h, and 80 Torr. X-ray diffractometry (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) and transmission electron microscopy (TEM) were used to identify the coating morphology and microstructure. Electrolytic deposition at 80 Torr improves the gathering of the bubbles on the cathode surface, and blocks the deposition of calcium phosphates. Under 80 Torr, the films are regularly interconnected at applied voltages greater than 7 V owing to rapid degassing. OH- increases with increasing applied voltage. When excess OH- is present, hydroxyapatite (HAP) is deposited on the Ti-6Al-4V substrate. The plate-like grains formed at applied voltages under 5 V are identified as dicalcium phosphate dehydrate (DCPD). HAP deposition occurs when the applied voltage is greater than 7 V. HAP increases with increasing electrolyte temperature.
AB - Calcium phosphate coatings were deposited on the Ti-6Al-4V alloy plate in a 0.04 M Ca(H2PO4)2 · H2O (MCPM) solution at 4-10 V, 0-60 °C, 1 h, and 80 Torr. X-ray diffractometry (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) and transmission electron microscopy (TEM) were used to identify the coating morphology and microstructure. Electrolytic deposition at 80 Torr improves the gathering of the bubbles on the cathode surface, and blocks the deposition of calcium phosphates. Under 80 Torr, the films are regularly interconnected at applied voltages greater than 7 V owing to rapid degassing. OH- increases with increasing applied voltage. When excess OH- is present, hydroxyapatite (HAP) is deposited on the Ti-6Al-4V substrate. The plate-like grains formed at applied voltages under 5 V are identified as dicalcium phosphate dehydrate (DCPD). HAP deposition occurs when the applied voltage is greater than 7 V. HAP increases with increasing electrolyte temperature.
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U2 - 10.1016/j.jeurceramsoc.2004.08.016
DO - 10.1016/j.jeurceramsoc.2004.08.016
M3 - Article
AN - SCOPUS:23144433258
SN - 0955-2219
VL - 25
SP - 3287
EP - 3292
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 14
ER -