Apatite formation behavior on bio-ceramic films prepared by MOCVD

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概要

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• Calcium titanate (CaTiO3), α-tricalcium phosphate (α-TCP) and hydroxyapatite (HAp) films were prepared by metal-organic chemical vapor deposition (MOCVD) using Ca(dpm)2, Ti(O-i-Pr)2(dpm)2 and (C6H5O)3PO precursors. The phases, composition and surface morphology of these films changed depending on substrate temperature (Tsub), total pressure (Ptot) and molar ratio of each precursors (RCa/Ti, RCa/P). The surface morphology of CaTiO3 films changed from granular structure to cauliflower-like texture, and its cross-sectional morphology changed from dense to columnar structure with increasing Tsub. α-TCP and HAp films had granular surface and dense cross-sectional morphology. CaTiO3, α-TCP and HAp films were immersed in a Hanks solution for 28 d. Apatite formation rate strongly depended on the surface morphology of CaTiO3 film, and apatite covered CaTiO3 film having a granular surface after 4 w while CaTiO3 film having a cauliflower-like texture after 3 d. Apatite covered α-TCP films after 14 d and HAp films after 6 h, respectively. HAp films prepared by MOCVD were promising as bone conductive materials.

• 2009-04-01

著者

• TU Rong

  Institute for Materials Research, Tohoku University

• GOTO Takashi

  Institute for Materials Research, Tohoku University

• 後藤 孝

  東北大学金属材料研究所

• 後藤 孝

  東北大金研

• 後藤 孝

  東北大学金属材料研究所複合機能材料学部門

• 後藤 孝

  Institute For Materials Research Tohoku University

• UEDA Kyosuke

  Department of Materials Processing, Tohoku University

• NARUSHIMA Takayuki

  Department of Materials Processing, Tohoku University

• SATO Mitsutaka

  Institute for Materials Research, Tohoku University

• 成島 尚之

  Department Of Materials Processing Tohoku University

• Tu Rong

  Inst. For Materials Res. Tohoku Univ.

• Tu Rong

  Institute For Materials Research Tohoku University

• Ueda Kyosuke

  Department Of Materials Processing Tohoku University

• Narushima Takayuki

  Department Of Materials Processing Graduate School Of Engineering Tohoku University

• Goto Takashi

  Institute For Material Research Tohoku University

• Rong Tu

  Institute For Materials Research Tohoku University

• Nezu Takashi

  Department Of Dental Materials Science And Technology Iwate Medical University School Of Dentistry

• Sato Mitsutaka

  Osaka Center For Industrial Materials Research Tohoku University

• 後藤 孝

  東北大

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