| 引用本文: | 施兰,杨立军,代文豪,李宁宁,闫程程.沉积温度对多孔钛表面仿生制备羟基磷灰石的影响[J].材料科学与工艺,2017,25(6):27-33.DOI:10.11951/j.issn.1005-0299.20170090. |
| SHI Lan,YANG Lijun,DAI Wenhao,LI Ningning,YAN Chengcheng.Effect of deposition temperature on biomimetic hydroxyapatite prepared on porous titanium surface[J].Materials Science and Technology,2017,25(6):27-33.DOI:10.11951/j.issn.1005-0299.20170090. |
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| 摘要: |
| 为研究沉积温度对羟基磷灰石涂层生长的影响，制备了不同温度条件下成分恒定的仿生沉积液，并采用纯钛和不同孔径的多孔钛做基体，在其表面仿生沉积羟基磷灰石涂层，再将得到的涂层试样浸泡在标准模拟体液中检测其生物活性.通过X射线衍射仪(XRD)分析涂层物相结构，用金相显微镜、环境扫描电子显微镜(ESEM)表征涂层形貌，利用能谱分析仪(EDS)计算钙磷比.研究表明：基体孔径增大，有利于沉积液进入到孔隙且表面粗糙度相对增大，从而使得HA涂层变得均匀致密；沉积温度由30 ℃升高至37 ℃，会加快HA涂层致密均匀的生长，但温度升高到44 ℃时，HA晶粒变粗大，涂层变得疏松化；模拟体液浸泡后，Ti/HA涂层试样表面有新的HA生成，且Ca/P比接近标准的1.67，表明该Ti/HA涂层试样具有良好的生物活性.适当增大钛基体孔径，提高沉积液温度，可以得到均匀致密的HA生物活性涂层.
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| 关键词: 多孔钛 羟基磷灰石 沉积温度 模拟体液 生物活性 |
| DOI：10.11951/j.issn.1005-0299.20170090 |
| 分类号:TG174 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(50972086). |
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| Effect of deposition temperature on biomimetic hydroxyapatite prepared on porous titanium surface |
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SHI Lan, YANG Lijun, DAI Wenhao, LI Ningning, YAN Chengcheng
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(College of Mechanical & Electrical Engineering, Shanxi University of Science and Technology, Xi′an 710021, China)
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| Abstract: |
| To study the effect of deposition temperature on the growth of hydroxyapatite coating, bionic sediment with constant composition was prepared at different temperature. At the same time, biomimetic hydroxyapatite was coated on pure titanium substrate and the surfaces of porous titanium with different pore sizes. The coated samples were immersed in standard simulated body fluids to detect their bioactivity. The phase structure of the coating was analyzed by X-ray diffraction (XRD). The surface morphology of the coating was characterized by metallographic microscope and environmental scanning electron microscopy (ESEM). The ratio of calcium to phosphorus was calculated by energy dispersive spectrometer (EDS). The results show that the increase of pore size of the matrix is favorable for the deposition of liquid into the pores and the surface roughness is relatively increased, which makes the HA coating become uniform and dense. The deposition temperature was increased from 30 ℃ to 37 ℃, which accelerated the HA coating dense and uniform growth, but the temperature rose to 44 ℃, the HA grains became coarse and the coating became loos. After the simulated body fluids were immersed, a new HA was formed on the surface of the Ti/HA coating sample with Ca/P ratio close to the standard 1.67, indicating that the Ti/HA coating samples had good bioactivity. Therefore, the appropriate increase of titanium matrix pore size and the temperature of the deposition fluid, could be evenly dense HA bioactive coating.
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| Key words: porous titanium hydroxyapatite deposition temperature simulation of body fluid biological activity |
