caa a22 4500 475783255 CHVBK 20180406123650.0 cr unu---uuuuu 170329e20001101xx s 000 0 eng 10.1023/A:1008934522363 doi (NATIONALLICENCE)springer-10.1023/A:1008934522363 A study of the process and kinetics of electrochemical deposition and the hydrothermal synthesis of hydroxyapatite coatings [Elektronische Daten] [Li-Ye Huang, Ke-Wei Xu, Jian Lu] Hydroxyapatite (HAp) coatings were prepared using electrochemical deposition and post-hydrothermal synthesis. The composition and morphology of coatings at each processing step was studied through the application of scanning electron microscopy (SEM), X-ray diffraction (XRD) and infra-red spectroscopy (IR). The mechanism and kinetics of hydrothermal synthesis were considered in particular, and the influnce of the temperature and time on the HAp formation rate was also investigated. The results show that the electrochemical deposition coatings are composed of CaHPO42H2O crystals which are converted into needle-like HAp crystals after post-hydrothermal treatment. The HAp content of the coatings increases with the treatment temperature and time. The synthesis rate also increases with the pH value of the water. The formation of HAp coatings is considered to be a combination of several reactions. An Arrhenius relationship was found between the HAp formation rate and the temperature, and an apparent activation energy of 94.4 KJ/mol was obtained by calculation. © 2000 Kluwer Academic Publishers Kluwer Academic Publishers, 2000 Huang Li-Ye State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, 710049, Xi'an, P.R. China aut Xu Ke-Wei State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, 710049, Xi'an, P.R. China aut Lu Jian LASMIS (Laboratoire des Syste'smes Me´caniques et d'Inge´nierie Simultane´e), Universite´ de Technologie de Troyes, 12 rue Marie Curie, BP 2060 10010, Troyes, France aut Journal of Materials Science: Materials in Medicine Kluwer Academic Publishers 11/11(2000-11-01), 667-673 0957-4530 11:11<667 2000 11 10856 https://doi.org/10.1023/A:1008934522363 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1008934522363 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Huang Li-Ye State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, 710049, Xi'an, P.R. China aut NATIONALLICENCE 700 1- Xu Ke-Wei State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, 710049, Xi'an, P.R. China aut NATIONALLICENCE 700 1- Lu Jian LASMIS (Laboratoire des Syste'smes Me´caniques et d'Inge´nierie Simultane´e), Universite´ de Technologie de Troyes, 12 rue Marie Curie, BP 2060 10010, Troyes, France aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Medicine Kluwer Academic Publishers 11/11(2000-11-01), 667-673 0957-4530 11:11<667 2000 11 10856 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer