| 引用本文: | 易伟,牛盾,孙旭东,HU Xiao zhi.三维钛网表面双生物陶瓷涂层的制备及其性能[J].材料科学与工艺,2013,21(6):66-71.DOI:10.11951/j.issn.1005-0299.20130612. |
| YI Wei,NIU Dun,SUN Xu-dong,HU Xiao-zhi.The processing and properties of double-layer bioceramics on Ti mesh[J].Materials Science and Technology,2013,21(6):66-71.DOI:10.11951/j.issn.1005-0299.20130612. |
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| 摘要: |
| 采用浸渍涂敷-烧结法首次在医用三维钛网表面制备出双生物陶瓷涂层,利用X射线衍射、场发射扫描电子显微镜对HA-BG/BG/Ti 复合材料进行了微观表征,拉伸法测量了Ti基体与BG 涂层的结合强度,模拟人体体液 (SBF) 评价复合材料的生物相容性．研究表明:该双生物陶瓷涂层的内层为生物玻璃 (BG) 涂层,外层为多孔结构的羟基磷灰石-生物玻璃 (HA-BG)复合涂层．Ti基体被致密的BG涂层包覆,由于在BG/Ti 界面发生化学反应,界面的结合强度提高,平均结合强度达27MPa．生物相容性实验表明,HA-BG/BG/Ti 复合材料表面会被一层整齐、致密的HA覆盖,具有良好的生物相容性． |
| 关键词: 钛 生物玻璃 羟基磷灰石 涂层 界面 生物相容性 |
| DOI：10.11951/j.issn.1005-0299.20130612 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(50172030); Australian Research Council′s Discovery Project (DP110105296). |
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| The processing and properties of double-layer bioceramics on Ti mesh |
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YI Wei 1, NIU Dun 2, SUN Xu-dong 1, HU Xiao-zhi 3
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(1.Key Laboratory for Anisotropy and Texture of Materials Northeastern University, Shenyang 110819,China; ;2.School of Science Northeastern University, Shenyang 110819,China;;3.University of Western Australia, Perth 6009,Australia)
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| Abstract: |
| This study presents a method of dip casting with sintering that can deposit double-layered bioceramics coatings onto 3D Ti mesh. X-Ray diffraction and Field Emission Scanning Electron Microscopy were used to characterize the bioceramics coating surface and cross-sectional microstructures. Bonding strength tests were carried out to measure the bonding strength between the BG coating and Ti-substrate. The biocompatibility of the Ti/bioceramics was analyzed by simulated body fluid. The FESEM and XRD characterization results showed that the Ti substrate was fully covered by dense bioglass (BG) coating, and followed by micro-porous hydroxyapatite-bioglass (HA-BG) coating. The average bonding strength between Ti substrate and BG coating was about 27MPa, which was actually promoted by the chemical reactions at the BG/Ti interface. After SBF immersion for 7days, the surface of HA-BG/BG/Ti composite was fully covered by an orderly, dense HA deposition layer, which indicated the excellent biocompatibility of the composite. |
| Key words: titanium bioglass hydroxyapatite coating interfaces biocompatibility |
